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YouTube 超快聊天

YouTube直播聊天的终极性能提升

目前为 2023-08-19 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.23.4
  4. // @license             MIT
  5. // @name:ja             YouTube スーパーファーストチャット
  6. // @name:zh-TW          YouTube 超快聊天
  7. // @name:zh-CN          YouTube 超快聊天
  8. // @icon                https://github.com/cyfung1031/userscript-supports/raw/main/icons/super-fast-chat.png
  9. // @namespace           UserScript
  10. // @match               https://www.youtube.com/live_chat*
  11. // @match               https://www.youtube.com/live_chat_replay*
  12. // @author              CY Fung
  13. // @run-at              document-start
  14. // @grant               none
  15. // @unwrap
  16. // @allFrames           true
  17. // @inject-into         page
  18. //
  19. // @compatible          firefox Violentmonkey
  20. // @compatible          firefox Tampermonkey
  21. // @compatible          firefox FireMonkey
  22. // @compatible          chrome Violentmonkey
  23. // @compatible          chrome Tampermonkey
  24. // @compatible          opera Violentmonkey
  25. // @compatible          opera Tampermonkey
  26. // @compatible          safari Stay
  27. // @compatible          edge Violentmonkey
  28. // @compatible          edge Tampermonkey
  29. // @compatible          brave Violentmonkey
  30. // @compatible          brave Tampermonkey
  31. //
  32. // @description         Ultimate Performance Boost for YouTube Live Chats
  33. // @description:ja      YouTubeのライブチャットの究極のパフォーマンスブースト
  34. // @description:zh-TW   YouTube直播聊天的終極性能提升
  35. // @description:zh-CN   YouTube直播聊天的终极性能提升
  36. //
  37. // ==/UserScript==
  38.  
  39. ((__CONTEXT__) => {
  40.   'use strict';
  41.  
  42.   const ENABLE_REDUCED_MAXITEMS_FOR_FLUSH = true;         // TRUE to enable trimming down to MAX_ITEMS_FOR_FULL_FLUSH (25) messages when there are too many unrendered messages
  43.   const MAX_ITEMS_FOR_TOTAL_DISPLAY = 90;                 // By default, 250 latest messages will be displayed, but displaying MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages is already sufficient.
  44.   const MAX_ITEMS_FOR_FULL_FLUSH = 25;                    // If there are too many new (stacked) messages not yet rendered, clean all and flush MAX_ITEMS_FOR_FULL_FLUSH (25) latest messages then incrementally added back to MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages
  45.  
  46.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  47.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  48.   const USE_WILL_CHANGE_CONTROLLER = false;               // FALSE for the majority
  49.   const ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED = true;  // In Chrome, the rendering of new chat messages could be too fast for no smooth transform. 80ms delay of displaying new messages should be sufficient for element rendering.
  50.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  51.  
  52.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  53.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  54.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  55.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  56.  
  57.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  58.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  59.  
  60.   // Replace requestAnimationFrame timers with custom implementation
  61.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  62.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  63.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  65.  
  66.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  67.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  68.  
  69.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  70.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  71.  
  72.   // Data Manipulation for Participants (Participant List)
  73.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  74.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  75.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  76.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  77.  
  78.   // show more button
  79.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  80.  
  81.   // faster stampDomArray_ for participants list creation
  82.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  83.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  84.  
  85.   // reuse yt components
  86.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  87.  
  88.   // images <Group#I01>
  89.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  90.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  91.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  92.  
  93.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  94.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  95.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  96.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  97.  
  98.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  99.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  100.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  101.  
  102.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  103.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  104.  
  105.   const ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF = 'steps'   // false OR '', 'linear', 'steps'
  106.   // << if ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF >>
  107.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  108.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  109.   // [limiting 500 max steps] is recommended for "confortable visual change"
  110.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  111.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  112.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  113.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  114.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  115.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  116.   // << end >>
  117.  
  118.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  119.   /*
  120.  
  121.     ### Time Approach
  122.  
  123.     // all below values can make the time interval > 250ms
  124.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  125.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  126.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  127.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  128.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  129.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  130.  
  131.     ### Pixel Check
  132.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  133.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  134.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  135.  
  136.     ### Example - totalDuration = 280000
  137.     totalDuration 280000
  138.     stepInterval 0.5
  139.     numOfSteps = Math.round(100 / stepInterval) = 200
  140.     time interval = 280000 / 200 = 1400ms <acceptable>
  141.  
  142.     ### Example - totalDuration = 18000
  143.     totalDuration 18000
  144.     stepInterval 5
  145.     numOfSteps = Math.round(100 / stepInterval) = 20
  146.     time interval = 18000 / 20 = 900ms <acceptable>
  147.  
  148.     ### Example - totalDuration = 5000
  149.     totalDuration 5000
  150.     stepInterval 5
  151.     numOfSteps = Math.round(100 / stepInterval) = 20
  152.     time interval = 5000 / 20 = 250ms <threshold value>
  153.  
  154.     ### Example - totalDuration = 3600
  155.     totalDuration 3600
  156.     stepInterval 5
  157.     numOfSteps = Math.round(100 / stepInterval) = 20
  158.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  159.  
  160.   */
  161.  
  162.   // =======================================================================================================
  163.  
  164.   // AUTOMAICALLY DETERMINED
  165.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  166.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  167.   let runTickerClassName = 'run-ticker';
  168.  
  169.   // image sizing code
  170.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  171.  
  172.  
  173. //   function KC(a, b, c, d) {
  174. //     d = void 0 === d ? "width" : d;
  175. //     if (!a || !a.length)
  176. //         return null;
  177. //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  178. //         var e = window.devicePixelRatio;
  179. //         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"));
  180. //         HC = e
  181. //     } else
  182. //         HC || (HC = window.devicePixelRatio);
  183. //     e = HC;
  184. //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  185. //     if (z("kevlar_tuner_min_thumbnail_quality"))
  186. //         return a[0].url || null;
  187. //     e = a.length;
  188. //     if (z("kevlar_tuner_max_thumbnail_quality"))
  189. //         return a[e - 1].url || null;
  190. //     if (c)
  191. //         for (var h = 0; h < e; h++)
  192. //             if (0 <= a[h].url.indexOf(c))
  193. //                 return a[h].url || null;
  194. //     for (c = 0; c < e; c++)
  195. //         if (a[c][d] >= b)
  196. //             return a[c].url || null;
  197. //     for (b = e - 1; 0 < b; b--)
  198. //         if (a[b][d])
  199. //             return a[b].url || null;
  200. //     return a[0].url || null
  201. // }
  202.  
  203.   const { IntersectionObserver } = __CONTEXT__;
  204.  
  205.   /** @type {globalThis.PromiseConstructor} */
  206.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  207.  
  208.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.")
  209.  
  210.   // necessity of cssText3_smooth_transform_position to be checked.
  211.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  212.  
  213.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  214.         position: static !important;
  215.     }
  216.  
  217.   `: '';
  218.  
  219.   // fallback if dummy style fn fails
  220.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  221.  
  222.     /* optional */
  223.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  224.         height: auto !important;
  225.         min-height: unset !important;
  226.     }
  227.  
  228.     #items.style-scope.yt-live-chat-item-list-renderer {
  229.         transform: translateY(0px) !important;
  230.     }
  231.  
  232.     /* optional */
  233.  
  234.   `: '';
  235.  
  236.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  237.  
  238.     /* ------------------------------------------------------------------------------------------------------------- */
  239.  
  240.     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 {
  241.         contain: layout style;
  242.     }
  243.  
  244.     #items.style-scope.yt-live-chat-item-list-renderer {
  245.         contain: layout paint style;
  246.     }
  247.  
  248.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  249.         contain: style;
  250.     }
  251.  
  252.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  253.         contain: size style;
  254.     }
  255.  
  256.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  257.         contain: size layout paint style;
  258.     }
  259.  
  260.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  261.         contain: layout paint style;
  262.     }
  263.  
  264.     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 {
  265.         contain: layout style;
  266.     }
  267.  
  268.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  269.         contain: layout paint style;
  270.     }
  271.  
  272.     /* ------------------------------------------------------------------------------------------------------------- */
  273.  
  274.   ` : '';
  275.  
  276.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  277.  
  278.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  279.         top: 4px;
  280.         transition-property: top;
  281.         bottom: unset;
  282.     }
  283.  
  284.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  285.         top: -42px;
  286.     }
  287.  
  288.   `: '';
  289.  
  290.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  291.  
  292.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  293.         contain: layout style;
  294.     }
  295.  
  296.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  297.         overflow: visible;
  298.     }
  299.  
  300.   `: '';
  301.  
  302.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  303.  
  304.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  305.         --yt-live-chat-action-panel-top-border: none;
  306.     }
  307.  
  308.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  309.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  310.     }
  311.  
  312.     html #panel-pages.yt-live-chat-renderer {
  313.         border-top: 0;
  314.         border-bottom: 0;
  315.     }
  316.  
  317.   `: '';
  318.  
  319.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  320.  
  321.     img,
  322.     yt-img-shadow[height][width],
  323.     yt-img-shadow {
  324.         content-visibility: visible !important;
  325.     }
  326.  
  327.   `  : '';
  328.  
  329.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  330.  
  331.     /* remove YouTube constant will-change */
  332.     /* constant value will slow down the performance; default auto */
  333.  
  334.     /* www-player.css */
  335.     html .ytp-contextmenu,
  336.     html .ytp-settings-menu {
  337.         will-change: unset;
  338.     }
  339.  
  340.     /* frequently matched elements */
  341.     html .fill.yt-interaction,
  342.     html .stroke.yt-interaction,
  343.     html .yt-spec-touch-feedback-shape__fill,
  344.     html .yt-spec-touch-feedback-shape__stroke {
  345.         will-change: unset;
  346.     }
  347.  
  348.     /* live_chat_polymer.js */
  349.     /*
  350.     html .toggle-button.tp-yt-paper-toggle-button,
  351.     html #primaryProgress.tp-yt-paper-progress,
  352.     html #secondaryProgress.tp-yt-paper-progress,
  353.     html #onRadio.tp-yt-paper-radio-button,
  354.     html .fill.yt-interaction,
  355.     html .stroke.yt-interaction,
  356.     html .yt-spec-touch-feedback-shape__fill,
  357.     html .yt-spec-touch-feedback-shape__stroke {
  358.         will-change: unset;
  359.     }
  360.     */
  361.  
  362.     /* desktop_polymer_enable_wil_icons.js */
  363.     /* html .fill.yt-interaction,
  364.     html .stroke.yt-interaction, */
  365.     html tp-yt-app-header::before,
  366.     html tp-yt-iron-list,
  367.     html #items.tp-yt-iron-list > *,
  368.     html #onRadio.tp-yt-paper-radio-button,
  369.     html .toggle-button.tp-yt-paper-toggle-button,
  370.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  371.     html #items.ytd-post-multi-image-renderer,
  372.     html #items.ytd-horizontal-card-list-renderer,
  373.     html #items.yt-horizontal-list-renderer,
  374.     html #left-arrow.yt-horizontal-list-renderer,
  375.     html #right-arrow.yt-horizontal-list-renderer,
  376.     html #items.ytd-video-description-infocards-section-renderer,
  377.     html #items.ytd-video-description-music-section-renderer,
  378.     html #chips.ytd-feed-filter-chip-bar-renderer,
  379.     html #chips.yt-chip-cloud-renderer,
  380.     html #items.ytd-merch-shelf-renderer,
  381.     html #items.ytd-product-details-image-carousel-renderer,
  382.     html ytd-video-preview,
  383.     html #player-container.ytd-video-preview,
  384.     html #primaryProgress.tp-yt-paper-progress,
  385.     html #secondaryProgress.tp-yt-paper-progress,
  386.     html ytd-miniplayer[enabled] /* ,
  387.     html .yt-spec-touch-feedback-shape__fill,
  388.     html .yt-spec-touch-feedback-shape__stroke */ {
  389.         will-change: unset;
  390.     }
  391.  
  392.     /* other */
  393.     .ytp-videowall-still-info-content[class],
  394.     .ytp-suggestion-image[class] {
  395.         will-change: unset !important;
  396.     }
  397.  
  398.   ` : '';
  399.  
  400.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  401.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  402.  
  403.     elzm-fonts {
  404.         visibility: collapse;
  405.         position: fixed;
  406.         top: -10px;
  407.         left: -10px;
  408.         font-size: 10pt;
  409.         line-height: 100%;
  410.         width: 100px;
  411.         height: 100px;
  412.         transform: scale(0.1);
  413.         transform: scale(0.01);
  414.         transform: scale(0.001);
  415.         transform-origin: 0 0;
  416.         contain: strict;
  417.         display: block;
  418.  
  419.         pointer-events: none !important;
  420.         user-select: none !important;
  421.     }
  422.  
  423.     elzm-fonts[id]#elzm-fonts-yk75g {
  424.         user-select: none !important;
  425.         pointer-events: none !important;
  426.     }
  427.  
  428.     elzm-font {
  429.         visibility: collapse;
  430.         position: absolute;
  431.         line-height: 100%;
  432.         width: 100px;
  433.         height: 100px;
  434.         contain: strict;
  435.         display: block;
  436.  
  437.         user-select: none !important;
  438.         pointer-events: none !important;
  439.     }
  440.  
  441.     elzm-font::before {
  442.         visibility: collapse;
  443.         position: absolute;
  444.         line-height: 100%;
  445.         width: 100px;
  446.         height: 100px;
  447.         contain: strict;
  448.         display: block;
  449.  
  450.         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';
  451.  
  452.         user-select: none !important;
  453.         pointer-events: none !important;
  454.     }
  455.  
  456.   `: '';
  457.  
  458.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  459.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  460.         -webkit-backdrop-filter: none;
  461.         backdrop-filter: none;
  462.     }
  463.   `: '';
  464.  
  465.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  466.  
  467.     @keyframes blinker-miuzp {
  468.         0%, 60%, 100% {
  469.             opacity: 1;
  470.         }
  471.         30% {
  472.             opacity: 0.6;
  473.         }
  474.     }
  475.  
  476.     yt-icon-button#show-more.has-new-messages-miuzp {
  477.         animation: blinker-miuzp 1.74s linear infinite;
  478.     }
  479.  
  480.   `: '';
  481.  
  482.  
  483.   const addCss = () => `
  484.  
  485.   @property --ticker-rtime {
  486.     syntax: "<percentage>";
  487.     inherits: false;
  488.     initial-value: 0%;
  489.   }
  490.  
  491.   /*
  492.   .run-ticker {
  493.     background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  494.   }
  495.  
  496.   .run-ticker-test {
  497.     background: #00000001;
  498.   }
  499.  
  500.   .run-ticker-forced,
  501.   yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  502.   yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  503.   {
  504.     background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  505.   }
  506.   */
  507.  
  508.   .run-ticker {
  509.     --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  510.   }
  511.  
  512.   .run-ticker,
  513.   yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  514.   yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  515.   {
  516.     background: var(--ticker-bg) !important;
  517.   }
  518.  
  519.   yt-live-chat-ticker-dummy777-item-renderer {
  520.     background: #00000001;
  521.   }
  522.  
  523.   yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  524.     position: fixed !important;
  525.     top: -1000px !important;
  526.     left: -1000px !important;
  527.     font-size: 1px !important;
  528.     color: transparent !important;
  529.     pointer-events: none !important;
  530.     z-index: -1 !important;
  531.     contain: strict !important;
  532.     box-sizing: border-box !important;
  533.     pointer-events: none !important;
  534.     user-select: none !important;
  535.     max-width: 1px !important;
  536.     max-height: 1px !important;
  537.     overflow: hidden !important;
  538.     visibility: collapse !important;
  539.     display: none !important;
  540.   }
  541.  
  542.   yt-live-chat-ticker-dummy777-item-renderer #container {
  543.     background: inherit;
  544.   }
  545.  
  546.  
  547.   ${cssText8_fonts_pre_render}
  548.  
  549.   ${cssText9_no_backdrop_filter_when_menu_shown}
  550.  
  551.   @supports (contain: layout paint style) {
  552.  
  553.     ${cssText5}
  554.  
  555.   }
  556.  
  557.   @supports (color: var(--general)) {
  558.  
  559.     html {
  560.         --yt-live-chat-item-list-renderer-padding: 0px 0px;
  561.     }
  562.  
  563.     ${cssText3_smooth_transform_position}
  564.  
  565.     ${cssText7c_will_change_unset}
  566.  
  567.     ${cssText7b_content_visibility_unset}
  568.  
  569.     yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  570.         overflow-y: scroll;
  571.         padding-right: 0;
  572.     }
  573.  
  574.     ${cssText4_smooth_transform_forced_props}
  575.  
  576.     yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  577.         pointer-events: none !important;
  578.     }
  579.  
  580.     #continuations, #continuations * {
  581.         contain: strict;
  582.         position: fixed;
  583.         top: 2px;
  584.         height: 1px;
  585.         width: 2px;
  586.         height: 1px;
  587.         visibility: collapse;
  588.     }
  589.  
  590.     ${cssText6b_show_more_button}
  591.  
  592.     ${cssText6d_input_panel_border}
  593.  
  594.     ${cssText6c_input_panel_overflow}
  595.  
  596.   }
  597.  
  598.  
  599.   @supports (overflow-anchor: auto) {
  600.  
  601.     .no-anchor * {
  602.         overflow-anchor: none;
  603.     }
  604.     .no-anchor > item-anchor {
  605.         overflow-anchor: auto;
  606.     }
  607.  
  608.     item-anchor {
  609.  
  610.         height:1px;
  611.         width: 100%;
  612.         transform: scaleY(0.00001);
  613.         transform-origin:0 0;
  614.         contain: strict;
  615.         opacity:0;
  616.         display:flex;
  617.         position:relative;
  618.         flex-shrink:0;
  619.         flex-grow:0;
  620.         margin-bottom:0;
  621.         overflow:hidden;
  622.         box-sizing:border-box;
  623.         visibility: visible;
  624.         content-visibility: visible;
  625.         contain-intrinsic-size: auto 1px;
  626.         pointer-events:none !important;
  627.  
  628.     }
  629.  
  630.     #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  631.         overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  632.     }
  633.  
  634.     html item-anchor {
  635.  
  636.         height: 1px;
  637.         width: 1px;
  638.         top: auto;
  639.         left: auto;
  640.         right: auto;
  641.         bottom: auto;
  642.         transform: translateY(-1px);
  643.         position: absolute;
  644.         z-index: -1;
  645.  
  646.     }
  647.  
  648.   }
  649.  
  650.   @supports (color: var(--pre-rendering)) {
  651.  
  652.     @keyframes dontRenderAnimation {
  653.         0% {
  654.             background-position-x: 3px;
  655.         }
  656.         100% {
  657.             background-position-x: 4px;
  658.         }
  659.     }
  660.  
  661.     .dont-render[class] {
  662.         /* visibility: collapse !important; */
  663.         /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  664.  
  665.         transform: scale(0.01) !important;
  666.         transform: scale(0.00001) !important;
  667.         transform: scale(0.0000001) !important;
  668.         transform-origin: 0 0 !important;
  669.         z-index: -1 !important;
  670.         contain: strict !important;
  671.         box-sizing: border-box !important;
  672.  
  673.         height: 1px !important;
  674.         height: 0.1px !important;
  675.         height: 0.01px !important;
  676.         height: 0.0001px !important;
  677.         height: 0.000001px !important;
  678.  
  679.         animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  680.  
  681.         pointer-events: none !important;
  682.         user-select: none !important;
  683.  
  684.     }
  685.  
  686.     #sk35z {
  687.       display: block !important;
  688.  
  689.       visibility: collapse !important;
  690.  
  691.       transform: scale(0.01) !important;
  692.       transform: scale(0.00001) !important;
  693.       transform: scale(0.0000001) !important;
  694.       transform-origin: 0 0 !important;
  695.       z-index: -1 !important;
  696.       contain: strict !important;
  697.       box-sizing: border-box !important;
  698.  
  699.       height: 1px !important;
  700.       height: 0.1px !important;
  701.       height: 0.01px !important;
  702.       height: 0.0001px !important;
  703.       height: 0.000001px !important;
  704.  
  705.       position: absolute !important;
  706.       top: -1000px !important;
  707.       left: -1000px !important;
  708.  
  709.     }
  710.  
  711.   }
  712.  
  713.   ${cssText10_show_more_blinker}
  714.  
  715.   `;
  716.  
  717.  
  718.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  719.  
  720.   // Create a unique key for the script and check if it is already running
  721.   const hkey_script = 'mchbwnoasqph';
  722.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  723.   win[hkey_script] = true;
  724.  
  725.   if (ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF) {
  726.  
  727.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  728.     if (te4 < 3) {
  729.       setTimeout(() => { });
  730.       setTimeout(() => { });
  731.     }
  732.  
  733.   }
  734.  
  735.  
  736.   function dr(s) {
  737.     // reserved for future use
  738.     return s;
  739.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  740.   }
  741.  
  742.   const getProto = (element) => {
  743.     if (element) {
  744.       const cnt = element.inst || element;
  745.       return cnt.constructor.prototype || null;
  746.     }
  747.     return null;
  748.   }
  749.  
  750.   const assertor = (f) => f() || console.assert(false, f + "");
  751.  
  752.   const fnIntegrity = (f, d) => {
  753.     if (!f || typeof f !== 'function') {
  754.       console.warn('f is not a function', f);
  755.       return;
  756.     }
  757.     let p = f + "", s = 0, j = -1, w = 0;
  758.     for (let i = 0, l = p.length; i < l; i++) {
  759.       const t = p[i];
  760.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  761.         if (j < i - 1) w++;
  762.         j = i;
  763.       } else {
  764.         s++;
  765.       }
  766.     }
  767.     let itz = `${f.length}.${s}.${w}`;
  768.     if (!d) {
  769.       return itz;
  770.     } else {
  771.       return itz === d;
  772.     }
  773.   }
  774.  
  775.  
  776.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  777.  
  778.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  779.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  780.   if (!isContainSupport) {
  781.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  782.   } else {
  783.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  784.   }
  785.  
  786.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  787.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  788.   if (!isOverflowAnchorSupport) {
  789.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  790.   } else {
  791.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  792.   }
  793.  
  794.   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.
  795.  
  796.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  797.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  798.  
  799.  
  800.   const fxOperator = (proto, propertyName) => {
  801.     let propertyDescriptorGetter = null;
  802.     try {
  803.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  804.     } catch (e) { }
  805.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  806.       try {
  807.  
  808.         return propertyDescriptorGetter.call(dr(e));
  809.       } catch (e) { }
  810.       return e[propertyName];
  811.     } : (e) => e[propertyName];
  812.   };
  813.  
  814.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  815.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  816.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  817.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  818.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  819.  
  820.   const groupCollapsed = (text1, text2) => {
  821.  
  822.     console.groupCollapsed(`%c${text1}%c${text2}`,
  823.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  824.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  825.     );
  826.   }
  827.  
  828.  
  829.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  830.   const onRegistryReady = (callback) => {
  831.     if (typeof customElements === 'undefined') {
  832.       if (!('__CE_registry' in document)) {
  833.         // https://github.com/webcomponents/polyfills/
  834.         Object.defineProperty(document, '__CE_registry', {
  835.           get() {
  836.             // return undefined
  837.           },
  838.           set(nv) {
  839.             if (typeof nv == 'object') {
  840.               delete this.__CE_registry;
  841.               this.__CE_registry = nv;
  842.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  843.             }
  844.             return true;
  845.           },
  846.           enumerable: false,
  847.           configurable: true
  848.         })
  849.       }
  850.       let eventHandler = (evt) => {
  851.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  852.         const f = callback;
  853.         callback = null;
  854.         eventHandler = null;
  855.         f();
  856.       };
  857.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  858.     } else {
  859.       callback();
  860.     }
  861.   };
  862.  
  863.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  864.  
  865.   /* globals WeakRef:false */
  866.  
  867.   /** @type {(o: Object | null) => WeakRef | null} */
  868.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  869.  
  870.   /** @type {(wr: Object | null) => Object | null} */
  871.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  872.  
  873.   const { addCssManaged } = (() => {
  874.  
  875.     const addFontPreRendering = () => {
  876.  
  877.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  878.  
  879.       let efsContainer = document.createElement('elzm-fonts');
  880.       efsContainer.id = 'elzm-fonts-yk75g'
  881.  
  882.       const arr = [];
  883.       let p = document.createElement('elzm-font');
  884.       arr.push(p);
  885.  
  886.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  887.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  888.  
  889.           p = document.createElement('elzm-font');
  890.           p.style.fontWeight = size;
  891.           arr.push(p);
  892.         }
  893.       }
  894.  
  895.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  896.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  897.  
  898.           p = document.createElement('elzm-font');
  899.           p.style.fontFamily = 'Roboto';
  900.           p.style.fontWeight = size;
  901.           arr.push(p);
  902.         }
  903.       }
  904.  
  905.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  906.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  907.  
  908.           p = document.createElement('elzm-font');
  909.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  910.           p.style.fontWeight = size;
  911.           arr.push(p);
  912.         }
  913.       }
  914.  
  915.  
  916.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  917.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  918.  
  919.           p = document.createElement('elzm-font');
  920.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  921.           p.style.fontWeight = size;
  922.           arr.push(p);
  923.         }
  924.       }
  925.  
  926.  
  927.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  928.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  929.  
  930.           p = document.createElement('elzm-font');
  931.           p.style.fontFamily = 'sans-serif';
  932.           p.style.fontWeight = size;
  933.           arr.push(p);
  934.         }
  935.       }
  936.  
  937.       console.log('number of elzm-font elements', arr.length);
  938.  
  939.       HTMLElement.prototype.append.apply(efsContainer, arr);
  940.  
  941.       (document.body || document.documentElement).appendChild(efsContainer);
  942.  
  943.  
  944.       console.log('elzm-font elements have been added to the page for rendering.');
  945.  
  946.       console.groupEnd();
  947.  
  948.     }
  949.  
  950.     let isCssAdded = false;
  951.  
  952.     function addCssElement() {
  953.       let s = document.createElement('style');
  954.       s.id = 'ewRvC';
  955.       return s;
  956.     }
  957.  
  958.     const addCssManaged = () => {
  959.       if (!isCssAdded && document.documentElement && document.head) {
  960.         isCssAdded = true;
  961.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  962.         if (ENABLE_FONT_PRE_RENDERING) {
  963.           Promise.resolve().then(addFontPreRendering)
  964.         }
  965.       }
  966.     }
  967.  
  968.     return { addCssManaged };
  969.   })();
  970.  
  971.  
  972.   const { setupStyle } = (() => {
  973.  
  974.     const sp7 = Symbol();
  975.  
  976.     const proxyHelperFn = (dummy) => ({
  977.  
  978.       get(target, prop) {
  979.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  980.       },
  981.       set(target, prop, value) {
  982.         if (!(prop in dummy)) {
  983.           target[prop] = value;
  984.         }
  985.         return true;
  986.       },
  987.       has(target, prop) {
  988.         return (prop in target);
  989.       },
  990.       deleteProperty(target, prop) {
  991.         return true;
  992.       },
  993.       ownKeys(target) {
  994.         return Object.keys(target);
  995.       },
  996.       defineProperty(target, key, descriptor) {
  997.         return Object.defineProperty(target, key, descriptor);
  998.       },
  999.       getOwnPropertyDescriptor(target, key) {
  1000.         return Object.getOwnPropertyDescriptor(target, key);
  1001.       },
  1002.  
  1003.     });
  1004.  
  1005.     const setupStyle = (m1, m2) => {
  1006.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1007.  
  1008.       const dummy1v = {
  1009.         transform: '',
  1010.         height: '',
  1011.         minHeight: '',
  1012.         paddingBottom: '',
  1013.         paddingTop: ''
  1014.       };
  1015.  
  1016.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1017.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1018.         dummy1v[k] = dummyStyleFn(k);
  1019.       }
  1020.  
  1021.       const dummy1p = proxyHelperFn(dummy1v);
  1022.       const sp1v = new Proxy(m1.style, dummy1p);
  1023.       const sp2v = new Proxy(m2.style, dummy1p);
  1024.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1025.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1026.       m1.removeAttribute("style");
  1027.       m2.removeAttribute("style");
  1028.  
  1029.     }
  1030.  
  1031.     return { setupStyle };
  1032.  
  1033.   })();
  1034.  
  1035.  
  1036.  
  1037.     /*
  1038.   function innerTextFixFn() {
  1039.  
  1040.     if (elemInnerText.status) return;
  1041.     elemInnerText.status = 1;
  1042.  
  1043.  
  1044.     const pd = Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'innerText');
  1045.     if (!pd) return;
  1046.     if (pd.configurable !== true) return;
  1047.     const getterFn = pd.get;
  1048.     if (typeof getterFn !== 'function') return;
  1049.     const getterGn = function () {
  1050.       const resultText = getterFn.apply(this, arguments);
  1051.       if (!resultText&& elemInnerText.status === 1) {
  1052.         const html = this.innerHTML;
  1053.         console.log(1234, html)
  1054.         if (html) {
  1055.           elemInnerText.status = 2;
  1056.           console.log(new Error().stack)
  1057.  
  1058.         }
  1059.       }
  1060.       return resultText;
  1061.     }
  1062.     let np = Object.assign({}, pd, { get: getterGn });
  1063.     console.log(124, np)
  1064.     Object.defineProperty(HTMLElement.prototype, 'innerText', np);
  1065.     console.log(125, Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'innerText').get)
  1066.  
  1067.   }    */
  1068.  
  1069.  
  1070.   function setThumbnails(config) {
  1071.  
  1072.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1073.  
  1074.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1075.  
  1076.  
  1077.       if (thumbnails && thumbnails.length > 0) {
  1078.         if (flag0 > 0 && thumbnails.length > 1) {
  1079.           let pSize = 0;
  1080.           let newThumbnails = [];
  1081.           for (const thumbnail of thumbnails) {
  1082.             if (!thumbnail || !thumbnail.url) continue;
  1083.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1084.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1085.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1086.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1087.               newThumbnails.push(thumbnail);
  1088.               if (imageLinks) imageLinks.add(thumbnail.url);
  1089.             }
  1090.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1091.               pSize = thumbnail.width;
  1092.             }
  1093.           }
  1094.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1095.             baseObject.thumbnails = newThumbnails;
  1096.           } else {
  1097.             newThumbnails.length = 0;
  1098.           }
  1099.           newThumbnails = null;
  1100.         } else {
  1101.           for (const thumbnail of thumbnails) {
  1102.             if (thumbnail && thumbnail.url) {
  1103.               if (imageLinks) imageLinks.add(thumbnail.url);
  1104.             }
  1105.           }
  1106.         }
  1107.       }
  1108.  
  1109.     }
  1110.   }
  1111.  
  1112.   function fixLiveChatItem(item, imageLinks) {
  1113.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1114.     if (liveChatTextMessageRenderer) {
  1115.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1116.       if (messageRuns && messageRuns.length > 0) {
  1117.         for (const run of messageRuns) {
  1118.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1119.           setThumbnails({
  1120.             baseObject: emojiImage,
  1121.             thumbnails: emojiImage.thumbnails,
  1122.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1123.             imageLinks
  1124.           });
  1125.         }
  1126.       }
  1127.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1128.       setThumbnails({
  1129.         baseObject: authorPhoto,
  1130.         thumbnails: authorPhoto.thumbnails,
  1131.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1132.         imageLinks
  1133.       });
  1134.     }
  1135.   }
  1136.  
  1137.  
  1138.   const cleanContext = async (win) => {
  1139.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1140.     try {
  1141.       let mx = 16; // MAX TRIAL
  1142.       const frameId = 'vanillajs-iframe-v1';
  1143.       /** @type {HTMLIFrameElement | null} */
  1144.       let frame = document.getElementById(frameId);
  1145.       let removeIframeFn = null;
  1146.       if (!frame) {
  1147.         frame = document.createElement('iframe');
  1148.         frame.id = 'vanillajs-iframe-v1';
  1149.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1150.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1151.         n.appendChild(frame);
  1152.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1153.         const root = document.documentElement;
  1154.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1155.         removeIframeFn = (setTimeout) => {
  1156.           const removeIframeOnDocumentReady = (e) => {
  1157.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1158.             win = null;
  1159.             setTimeout(() => {
  1160.               n.remove();
  1161.               n = null;
  1162.             }, 200);
  1163.           }
  1164.           if (document.readyState !== 'loading') {
  1165.             removeIframeOnDocumentReady();
  1166.           } else {
  1167.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1168.           }
  1169.         }
  1170.       }
  1171.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1172.       const fc = frame.contentWindow;
  1173.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1174.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval } = fc;
  1175.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval };
  1176.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1177.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1178.       res.animate = HTMLElement.prototype.animate;
  1179.       return res;
  1180.     } catch (e) {
  1181.       console.warn(e);
  1182.       return null;
  1183.     }
  1184.   };
  1185.  
  1186.   const flagsFnOnInterval = (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) ? (() => {
  1187.  
  1188.     const flags = () => {
  1189.       try {
  1190.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1191.       } catch (e) { }
  1192.       return null;
  1193.     };
  1194.  
  1195.     const flagsForced = () => {
  1196.       try {
  1197.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1198.       } catch (e) { }
  1199.       return null;
  1200.     };
  1201.  
  1202.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1203.  
  1204.       if (!EXPERIMENT_FLAGS) return;
  1205.  
  1206.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1207.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1208.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1209.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1210.         }
  1211.       }
  1212.  
  1213.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1214.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1215.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1216.       }
  1217.  
  1218.     };
  1219.  
  1220.     const uf = (EXPERIMENT_FLAGS) => {
  1221.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1222.       if (EXPERIMENT_FLAGS) {
  1223.         flagsFn(EXPERIMENT_FLAGS);
  1224.         flagsFn(flagsForced());
  1225.       }
  1226.     }
  1227.  
  1228.     uf();
  1229.  
  1230.     const flagsFnOnInterval = (setInterval, clearInterval) => {
  1231.  
  1232.       uf();
  1233.       let cidFlags = 0;
  1234.       let kd = 0;
  1235.       new Promise(flagResolve => {
  1236.  
  1237.         const flagTimer = () => {
  1238.           const EXPERIMENT_FLAGS = flags();
  1239.           if (!EXPERIMENT_FLAGS) return;
  1240.           uf(EXPERIMENT_FLAGS);
  1241.           if (kd > 0) return;
  1242.           kd = 1;
  1243.           const delay1000 = new Promise(resolve => setTimeout(resolve, 1000));
  1244.           const moDeferred = new Promise(resolve => {
  1245.             let mo = new MutationObserver(() => {
  1246.               if (mo) {
  1247.                 mo.disconnect();
  1248.                 mo.takeRecords();
  1249.                 mo = null;
  1250.                 resolve();
  1251.               }
  1252.             });
  1253.             mo.observe(document, { subtree: true, childList: true });
  1254.           });
  1255.           Promise.race([delay1000, moDeferred]).then(flagResolve);
  1256.         };
  1257.  
  1258.         uf();
  1259.         cidFlags = setInterval(flagTimer, 1);
  1260.       }).then(() => {
  1261.         if (cidFlags > 0) clearInterval(cidFlags);
  1262.         cidFlags = 0;
  1263.         uf();
  1264.       });
  1265.  
  1266.     }
  1267.  
  1268.     return flagsFnOnInterval;
  1269.  
  1270.   })() : null;
  1271.  
  1272.   let kptPF = null;
  1273.   const emojiPrefetched = new Set();
  1274.   const authorPhotoPrefetched = new Set();
  1275.  
  1276.   function linker(link, rel, href, _as){
  1277.     return new Promise(resolve=>{
  1278.       if (!link) link = document.createElement('link');
  1279.       link.rel = rel;
  1280.       if (_as) link.setAttribute('as', _as);
  1281.       link.onload = function () {
  1282.         resolve({
  1283.           link: this,
  1284.           success: true
  1285.         })
  1286.         this.remove();
  1287.       };
  1288.       link.onerror = function () {
  1289.         resolve({
  1290.           link: this,
  1291.           success: false
  1292.         });
  1293.         this.remove();
  1294.       };
  1295.       link.href = href;
  1296.       document.head.appendChild(link);
  1297.       link= null;
  1298.     });
  1299.   }
  1300.  
  1301.   cleanContext(win).then(__CONTEXT__ => {
  1302.     if (!__CONTEXT__) return null;
  1303.  
  1304.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate } = __CONTEXT__;
  1305.  
  1306.     let aeConstructor = null;
  1307.  
  1308.     // << if ENABLE_VIDEO_PROGRESS_STATE_FIX >>
  1309.     let pairForPauseResume = 0; // each increasion = number of ticker
  1310.     let pairForPauseResumeM = 0;
  1311.     // << end >>
  1312.  
  1313.     if(flagsFnOnInterval) flagsFnOnInterval(setInterval, clearInterval);
  1314.  
  1315.     function basePrefetching() {
  1316.  
  1317.       new Promise(resolve => {
  1318.  
  1319.         if (document.readyState !== 'loading') {
  1320.           resolve();
  1321.         } else {
  1322.           win.addEventListener("DOMContentLoaded", resolve, false);
  1323.         }
  1324.  
  1325.       }).then(() => {
  1326.         const hostL1 = [
  1327.           'https://www.youtube.com', 'https://googlevideo.com',
  1328.           'https://googleapis.com', 'https://accounts.youtube.com',
  1329.           'https://www.gstatic.com', 'https://ggpht.com',
  1330.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1331.         ];
  1332.  
  1333.         const hostL2 = [
  1334.           'https://youtube.com',
  1335.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1336.         ];
  1337.  
  1338.         let link = null;
  1339.  
  1340.         function kn() {
  1341.  
  1342.           link = document.createElement('link');
  1343.           if (link.relList && link.relList.supports) {
  1344.             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)
  1345.           } else {
  1346.             kptPF = 0;
  1347.           }
  1348.  
  1349.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1350.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1351.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1352.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1353.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1354.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1355.           console.groupEnd();
  1356.  
  1357.         }
  1358.  
  1359.         for (const h of hostL1) {
  1360.  
  1361.           if (kptPF === null) kn();
  1362.           if (ENABLE_BASE_PREFETCHING) {
  1363.             // if (kptPF & 1) {
  1364.             //   linker(link, 'dns-prefetch', h);
  1365.             //   link = null;
  1366.             // }
  1367.             if (kptPF & 2) {
  1368.               linker(link, 'preconnect', h);
  1369.               link = null;
  1370.             }
  1371.           }
  1372.         }
  1373.  
  1374.         for (const h of hostL2) {
  1375.           if (kptPF === null) kn();
  1376.           if (ENABLE_BASE_PREFETCHING) {
  1377.             if (kptPF & 1) {
  1378.               linker(link, 'dns-prefetch', h);
  1379.               link = null;
  1380.             }
  1381.           }
  1382.         }
  1383.  
  1384.       })
  1385.  
  1386.  
  1387.     }
  1388.  
  1389.     basePrefetching();
  1390.  
  1391.     (() => {
  1392.       // data manipulation
  1393.  
  1394.       if (!DO_PARTICIPANT_LIST_HACKS) return;
  1395.  
  1396.       class Mutex {
  1397.  
  1398.         constructor() {
  1399.           this.p = Promise.resolve()
  1400.         }
  1401.  
  1402.         /**
  1403.          *  @param {(lockResolve: () => void)} f
  1404.          */
  1405.         lockWith(f) {
  1406.           this.p = this.p.then(() => new Promise(f).catch(console.warn))
  1407.         }
  1408.  
  1409.       }
  1410.  
  1411.  
  1412.       /**
  1413.  
  1414.        h.onParticipantsChanged = function() {
  1415.           this.notifyPath("participantsManager.participants")
  1416.       }
  1417.  
  1418.  
  1419.       at h.onParticipantsChanged (live_chat_polymer.js:8334:41)
  1420.       at e.<anonymous> (live_chat_polymer.js:1637:69)
  1421.       at e.Bb [as __shady_dispatchEvent] (webcomponents-sd.js:46:110)
  1422.       at k.dispatchEvent (webcomponents-sd.js:122:237)
  1423.       at mu (live_chat_polymer.js:1677:71)
  1424.       at Object.wga [as fn] (live_chat_polymer.js:1678:99)
  1425.       at a._propertiesChanged (live_chat_polymer.js:1726:426)
  1426.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1427.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1428.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1429.  
  1430.       */
  1431.  
  1432.  
  1433.       const beforeParticipantsMap = new WeakMap();
  1434.  
  1435.       const { notifyPath7081 } = (() => {
  1436.  
  1437.         const mutexParticipants = new Mutex();
  1438.  
  1439.         let uvid = 0;
  1440.         let r95dm = 0;
  1441.         let c95dm = -1;
  1442.  
  1443.         const foundMap = (base, content) => {
  1444.           /*
  1445.             let lastSearch = 0;
  1446.             let founds = base.map(baseEntry => {
  1447.               let search = content.indexOf(baseEntry, lastSearch);
  1448.               if (search < 0) return false;
  1449.               lastSearch = search + 1;
  1450.               return true;
  1451.             });
  1452.             return founds;
  1453.           */
  1454.           const contentSet = new Set(content);
  1455.           return base.map(baseEntry => contentSet.has(baseEntry));
  1456.  
  1457.         }
  1458.  
  1459.  
  1460.  
  1461.         const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1462.  
  1463.           const handler1 = {
  1464.             get(target, prop, receiver) {
  1465.               if (prop === 'object') {
  1466.                 return participants; // avoid memory leakage
  1467.               }
  1468.               if (prop === 'type') {
  1469.                 return 'splice';
  1470.               }
  1471.               return target[prop];
  1472.             }
  1473.           };
  1474.           const releaser = () => {
  1475.             participants = null;
  1476.           }
  1477.  
  1478.           let foundsForAfter = foundMap(idsAfter, idsBefore);
  1479.           let foundsForBefore = foundMap(idsBefore, idsAfter);
  1480.  
  1481.           let indexSplices = [];
  1482.           let contentUpdates = [];
  1483.           for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1484.             if (beforeParticipants[i] === participants[j]) {
  1485.               i++; j++;
  1486.             } else if (idsBefore[i] === idsAfter[j]) {
  1487.               // content changed
  1488.               contentUpdates.push({ indexI: i, indexJ: j })
  1489.               i++; j++;
  1490.             } else {
  1491.               let addedCount = 0;
  1492.               for (let q = j; q < foundsForAfter.length; q++) {
  1493.                 if (foundsForAfter[q] === false) addedCount++;
  1494.                 else break;
  1495.               }
  1496.               let removedCount = 0;
  1497.               for (let q = i; q < foundsForBefore.length; q++) {
  1498.                 if (foundsForBefore[q] === false) removedCount++;
  1499.                 else break;
  1500.               }
  1501.               if (!addedCount && !removedCount) {
  1502.                 throw 'ERROR(0xFF32): spliceIndicesFunc';
  1503.               }
  1504.               indexSplices.push(new Proxy({
  1505.                 index: j,
  1506.                 addedCount: addedCount,
  1507.                 removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1508.               }, handler1));
  1509.               i += removedCount;
  1510.               j += addedCount;
  1511.             }
  1512.           }
  1513.           foundsForBefore = null;
  1514.           foundsForAfter = null;
  1515.           idsBefore = null;
  1516.           idsAfter = null;
  1517.           beforeParticipants = null;
  1518.           return { indexSplices, contentUpdates, releaser };
  1519.  
  1520.         }
  1521.  
  1522.         /*
  1523.  
  1524.         customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1525.  
  1526.         VM63631:1 Error
  1527.         at customElements.get.notifyPath (<anonymous>:1:122)
  1528.         at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1529.         at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1530.         at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1531.         at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1532.         at ju (live_chat_polymer.js:1674:217)
  1533.         at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1534.         at b._flushProperties (live_chat_polymer.js:1597:200)
  1535.         at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1536.         at a.notifyPath (live_chat_polymer.js:1741:182)
  1537.  
  1538.         */
  1539.  
  1540.         function convertToIds(participants) {
  1541.           return participants.map(participant => {
  1542.             if (!participant || typeof participant !== 'object') {
  1543.               console.warn('Error(0xFA41): convertToIds', participant);
  1544.               return participant; // just in case
  1545.             }
  1546.             let keys = Object.keys(participant);
  1547.             // liveChatTextMessageRenderer
  1548.             // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1549.             // liveChatPaidMessageRenderer
  1550.             /*
  1551.  
  1552.               'yt-live-chat-participant-renderer' utilizes the following:
  1553.               authorName.simpleText: string
  1554.               authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1555.               authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1556.               authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1557.               authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1558.  
  1559.             */
  1560.             if (keys.length !== 1) {
  1561.               console.warn('Error(0xFA42): convertToIds', participant);
  1562.               return participant; // just in case
  1563.             }
  1564.             let key = keys[0];
  1565.             let renderer = (participant[key] || 0);
  1566.             let authorName = (renderer.authorName || 0);
  1567.             let text = `${authorName.simpleText || authorName.text}`
  1568.             let res = participant; // fallback if it is not a vaild entry
  1569.             if (typeof text !== 'string') {
  1570.               console.warn('Error(0xFA53): convertToIds', participant);
  1571.             } else {
  1572.               text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1573.               if (text.length > 1) res = text;
  1574.             }
  1575.             return res;
  1576.             // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1577.             // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1578.           });
  1579.         }
  1580.  
  1581.         const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1582.           // just update when content is changed.
  1583.           if (p1.authorName !== p2.authorName) return true;
  1584.           if (p1.authorPhoto !== p2.authorPhoto) return true;
  1585.           if (p1.authorBadges !== p2.authorBadges) return true;
  1586.           return false;
  1587.         } : (p1, p2) => {
  1588.           // keep integrity all the time.
  1589.           return p1 !== p2; // always true
  1590.         }
  1591.  
  1592.         function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1593.  
  1594.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1595.             if (path !== "participantsManager.participants") {
  1596.               return this.__notifyPath5036__.apply(this, arguments);
  1597.             }
  1598.             if (c95dm === r95dm) return;
  1599.           } else {
  1600.             const stack = new Error().stack;
  1601.             if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1602.               return this.__notifyPath5036__.apply(this, arguments);
  1603.             }
  1604.           }
  1605.  
  1606.           if (uvid > 1e8) uvid = uvid % 100;
  1607.           let tid = ++uvid;
  1608.  
  1609.           const cnt = this; // "yt-live-chat-participant-list-renderer"
  1610.           mutexParticipants.lockWith(lockResolve => {
  1611.  
  1612.             const participants00 = cnt.participantsManager.participants;
  1613.  
  1614.             if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1615.               lockResolve();
  1616.               return;
  1617.             }
  1618.  
  1619.             let doUpdate = false;
  1620.  
  1621.             if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1622.  
  1623.               if (!participants00.r94dm) {
  1624.                 participants00.r94dm = 1;
  1625.                 if (++r95dm > 1e9) r95dm = 9;
  1626.                 participants00.push = function () {
  1627.                   if (++r95dm > 1e9) r95dm = 9;
  1628.                   return Array.prototype.push.apply(this, arguments);
  1629.                 }
  1630.                 participants00.pop = function () {
  1631.                   if (++r95dm > 1e9) r95dm = 9;
  1632.                   return Array.prototype.pop.apply(this, arguments);
  1633.                 }
  1634.                 participants00.shift = function () {
  1635.                   if (++r95dm > 1e9) r95dm = 9;
  1636.                   return Array.prototype.shift.apply(this, arguments);
  1637.                 }
  1638.                 participants00.unshift = function () {
  1639.                   if (++r95dm > 1e9) r95dm = 9;
  1640.                   return Array.prototype.unshift.apply(this, arguments);
  1641.                 }
  1642.                 participants00.splice = function () {
  1643.                   if (++r95dm > 1e9) r95dm = 9;
  1644.                   return Array.prototype.splice.apply(this, arguments);
  1645.                 }
  1646.                 participants00.sort = function () {
  1647.                   if (++r95dm > 1e9) r95dm = 9;
  1648.                   return Array.prototype.sort.apply(this, arguments);
  1649.                 }
  1650.                 participants00.reverse = function () {
  1651.                   if (++r95dm > 1e9) r95dm = 9;
  1652.                   return Array.prototype.reverse.apply(this, arguments);
  1653.                 }
  1654.               }
  1655.  
  1656.               if (c95dm !== r95dm) {
  1657.                 c95dm = r95dm;
  1658.                 doUpdate = true;
  1659.               }
  1660.  
  1661.             } else {
  1662.               doUpdate = true;
  1663.             }
  1664.  
  1665.             if (!doUpdate) {
  1666.               lockResolve();
  1667.               return;
  1668.             }
  1669.  
  1670.             const participants = participants00.slice(0);
  1671.             const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1672.             beforeParticipantsMap.set(cnt, participants);
  1673.  
  1674.             const resPromise = (async () => {
  1675.  
  1676.               if (beforeParticipants.length === 0) {
  1677.                 // not error
  1678.                 return 0;
  1679.               }
  1680.  
  1681.               let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1682.  
  1683.               // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1684.               if (beforeParticipants.length !== countOfElements) {
  1685.                 // there is somewrong for the cache. - sometimes happen
  1686.                 return 0;
  1687.               }
  1688.  
  1689.               const idsBefore = convertToIds(beforeParticipants);
  1690.               const idsAfter = convertToIds(participants);
  1691.  
  1692.               let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  1693.  
  1694.               let res = 1; // default 1 for no update
  1695.  
  1696.               if (indexSplices.length >= 1) {
  1697.  
  1698.  
  1699.                 // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  1700.                 // let p1 = indexSplices[0].removed;
  1701.                 // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  1702.  
  1703.                 /* folllow
  1704.                     a.notifyPath(c + ".splices", d);
  1705.                     a.notifyPath(c + ".length", b.length);
  1706.                 */
  1707.                 // stampDomArraySplices_
  1708.  
  1709.  
  1710.                 await new Promise(resolve => {
  1711.                   cnt.resolveForDOMRendering781 = resolve;
  1712.  
  1713.                   cnt.__notifyPath5036__("participantsManager.participants.splices", {
  1714.                     indexSplices
  1715.                   });
  1716.                   indexSplices = null;
  1717.                   releaser();
  1718.                   releaser = null;
  1719.                   cnt.__notifyPath5036__("participantsManager.participants.length",
  1720.                     participants.length
  1721.                   );
  1722.  
  1723.                 });
  1724.  
  1725.                 await Promise.resolve(0); // play safe for the change of 'length'
  1726.                 countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  1727.  
  1728.                 let wrongSize = participants.length !== countOfElements
  1729.                 if (wrongSize) {
  1730.                   console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  1731.                   return 0;
  1732.                 }
  1733.  
  1734.                 res = 2 | 4;
  1735.  
  1736.               } else {
  1737.  
  1738.                 indexSplices = null;
  1739.                 releaser();
  1740.                 releaser = null;
  1741.  
  1742.                 if (participants.length !== countOfElements) {
  1743.                   // other unhandled cases
  1744.                   return 0;
  1745.                 }
  1746.  
  1747.               }
  1748.  
  1749.               // participants.length === countOfElements before contentUpdates
  1750.               if (contentUpdates.length >= 1) {
  1751.                 for (const contentUpdate of contentUpdates) {
  1752.                   let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  1753.                   if (isChanged) {
  1754.                     cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  1755.                     res |= 4 | 8;
  1756.                   }
  1757.                 }
  1758.               }
  1759.               contentUpdates = null;
  1760.  
  1761.               return res;
  1762.  
  1763.  
  1764.             })();
  1765.  
  1766.  
  1767.             resPromise.then(resValue => {
  1768.  
  1769.               const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  1770.               isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  1771.               if (resValue === 0) {
  1772.                 new Promise(resolve => {
  1773.                   cnt.resolveForDOMRendering781 = resolve;
  1774.                   isLogRequired && console.log("Full Refresh begins");
  1775.                   cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  1776.                 }).then(() => {
  1777.                   isLogRequired && console.log("Full Refresh ends");
  1778.                   console.groupEnd();
  1779.                 }).then(lockResolve);
  1780.                 return;
  1781.               }
  1782.  
  1783.               const delayLockResolve = (resValue & 4) === 4;
  1784.  
  1785.               if (delayLockResolve) {
  1786.                 isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  1787.                 isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  1788.                 isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  1789.                 isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  1790.                 isLogRequired && console.groupEnd();
  1791.                 // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  1792.                 // mutex lock with requestAnimationFrame can also disable participants update in background
  1793.                 requestAnimationFrame(lockResolve);
  1794.               } else {
  1795.                 lockResolve();
  1796.               }
  1797.  
  1798.             });
  1799.  
  1800.           });
  1801.  
  1802.         }
  1803.  
  1804.         return { notifyPath7081 };
  1805.  
  1806.       })();
  1807.  
  1808.  
  1809.       const onRegistryReadyForDataManipulation = () => {
  1810.  
  1811.         function dummy5035(a, b, c) { }
  1812.         function dummy411(a, b, c) { }
  1813.  
  1814.  
  1815.         /*
  1816.          // removed due to https://greasyfork.org/scripts/469878/discussions/197781
  1817.          // cProto.preloadAvatarForAddAction should not be changed.
  1818.         if (REMOVE_PRELOADAVATARFORADDACTION) {
  1819.  
  1820.           customElements.whenDefined("yt-live-chat-renderer").then(() => {
  1821.  
  1822.             const tag = "yt-live-chat-renderer";
  1823.             const cProto = getProto(document.createElement(tag));
  1824.  
  1825.             groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  1826.  
  1827.             if (typeof cProto.preloadAvatarForAddAction === 'function' && !cProto.preloadAvatarForAddAction66 && cProto.preloadAvatarForAddAction.length === 1) {
  1828.  
  1829.               cProto.preloadAvatarForAddAction66 = cProto.preloadAvatarForAddAction;
  1830.               cProto.preloadAvatarForAddAction = function () {
  1831.                 //  ===== skip  =====
  1832.  
  1833.                 // if (a.item) {
  1834.                 //   a = a.item;
  1835.                 //   var b = Object.keys(a)[0];
  1836.                 //   a = a[b];
  1837.                 //   b = KC(this.get("authorPhoto.thumbnails", a), 24);
  1838.                 //   "string" === typeof b && (this.preloadImage(b),
  1839.                 //     a.authorPhoto.webThumbnailDetailsExtensionData = {
  1840.                 //       isPreloaded: !0
  1841.                 //     })
  1842.                 // }
  1843.  
  1844.                 //  ===== skip  =====
  1845.               }
  1846.               console.log("cProto.preloadAvatarForAddAction - OK");
  1847.             } else {
  1848.               console.log("cProto.preloadAvatarForAddAction - NG");
  1849.  
  1850.             }
  1851.             console.groupEnd();
  1852.  
  1853.             // cProto.preloadImage = function (){
  1854.             //   // although we do in flushItem; just avoid being used by other usages ...
  1855.             // }
  1856.  
  1857.           });
  1858.  
  1859.         }
  1860.         */
  1861.  
  1862.  
  1863.         customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  1864.  
  1865.           if (!DO_PARTICIPANT_LIST_HACKS) return;
  1866.  
  1867.           const tag = "yt-live-chat-participant-list-renderer";
  1868.           const cProto = getProto(document.createElement(tag));
  1869.           if (!cProto || typeof cProto.attached !== 'function') {
  1870.             // for _registered, proto.attached shall exist when the element is defined.
  1871.             // for controller extraction, attached shall exist when instance creates.
  1872.             console.warn(`proto.attached for ${tag} is unavailable.`);
  1873.             return;
  1874.           }
  1875.  
  1876.  
  1877.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  1878.  
  1879.           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'];
  1880.           const fgs = {};
  1881.           for (const key of fgsArr) fgs[key] = undefined;
  1882.  
  1883.           try {
  1884.             const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  1885.             for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  1886.           } catch (e) { }
  1887.           console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  1888.  
  1889.           const canDoReplacement = (() => {
  1890.             if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  1891.               console.warn('YouTube Live Chat Tamer is running.');
  1892.               return;
  1893.             }
  1894.  
  1895.             if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  1896.               console.warn('YouTube Live Chat Tamer is running.');
  1897.               return;
  1898.             }
  1899.  
  1900.             cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  1901.             cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  1902.  
  1903.             if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  1904.               console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  1905.               return;
  1906.             }
  1907.  
  1908.             if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  1909.               console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  1910.               return;
  1911.             }
  1912.  
  1913.             if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  1914.               console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  1915.               return;
  1916.             }
  1917.             return true;
  1918.           })();
  1919.  
  1920.           console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  1921.  
  1922.           assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  1923.           if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  1924.             let fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  1925.             let s = fiRSCB.split('.');
  1926.             if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  1927.               console.log("flushRenderStamperComponentBindings_ - OK", fiRSCB);
  1928.             } else {
  1929.               console.log("flushRenderStamperComponentBindings_ - failed", fiRSCB);
  1930.             }
  1931.           } else {
  1932.             console.log("flushRenderStamperComponentBindings_ - not found");
  1933.           }
  1934.           // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  1935.  
  1936.           if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  1937.             cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  1938.             cProto.flushRenderStamperComponentBindings_ = function () {
  1939.               // console.log('flushRenderStamperComponentBindings_')
  1940.               this.flushRenderStamperComponentBindings66_();
  1941.               if (this.resolveForDOMRendering781) {
  1942.                 this.resolveForDOMRendering781();
  1943.                 this.resolveForDOMRendering781 = null;
  1944.               }
  1945.             };
  1946.           }
  1947.  
  1948.           cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  1949.             const container = ((this || 0).$ || 0).participants;
  1950.             if (!container) return 0;
  1951.             return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  1952.           }
  1953.  
  1954.           const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  1955.  
  1956.           cProto.__attached412__ = cProto.attached;
  1957.           const fpPList = function (hostElement) {
  1958.             const cnt = hostElement.inst || hostElement;
  1959.             if (beforeParticipantsMap.has(cnt)) return;
  1960.             hostElement.classList.add('n9fJ3');
  1961.  
  1962.             assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  1963.             if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  1964.               console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  1965.               return;
  1966.             }
  1967.  
  1968.             groupCollapsed("Participant List attached", "");
  1969.             // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  1970.             //   console.log(123, 'appendChild');
  1971.             //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  1972.             // }
  1973.  
  1974.             // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  1975.             //   console.log(123, 'insertBefore');
  1976.             //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  1977.             // }
  1978.  
  1979.             cnt.__notifyPath5036__ = cnt.notifyPath
  1980.             const participants = ((cnt.participantsManager || 0).participants || 0);
  1981.             assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  1982.             console.log(`initial number of participants: ${participants.length}`);
  1983.             const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  1984.             beforeParticipantsMap.set(cnt, newParticipants);
  1985.             cnt.notifyPath = notifyPath7081;
  1986.             console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  1987.             console.groupEnd();
  1988.           }
  1989.           cProto.attached = function () {
  1990.             fpPList(this.hostElement || this);
  1991.             this.__attached412__.apply(this, arguments);
  1992.           };
  1993.  
  1994.  
  1995.           if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  1996.  
  1997.             /** @type {boolean | (()=>boolean)} */
  1998.             let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  1999.             if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2000.  
  2001.               let lastMessageDate = 0;
  2002.               cProto.stampDomArray66_ = cProto.stampDomArray_;
  2003.  
  2004.               cProto.stampDomArray_ = function (...args) {
  2005.                 if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2006.                   if (typeof toUseMaintainStableList === 'function') {
  2007.                     toUseMaintainStableList = toUseMaintainStableList();
  2008.                   }
  2009.                   args[5] = toUseMaintainStableList;
  2010.                   let currentDate = Date.now();
  2011.                   if (currentDate - lastMessageDate > 80) {
  2012.                     lastMessageDate = currentDate;
  2013.                     console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2014.                   }
  2015.                 }
  2016.                 return this.stampDomArray66_.apply(this, args);
  2017.               }
  2018.  
  2019.               cProto.stampDomArray_.nIegT = 1;
  2020.  
  2021.             }
  2022.             console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2023.           } else {
  2024.             console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2025.           }
  2026.  
  2027.           console.groupEnd();
  2028.  
  2029.           if (onPageElements.length >= 1) {
  2030.             for (const s of onPageElements) {
  2031.               if ((s.inst || s).isAttached === true) {
  2032.                 fpPList(s);
  2033.               }
  2034.             }
  2035.           }
  2036.  
  2037.         });
  2038.  
  2039.       };
  2040.  
  2041.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2042.  
  2043.  
  2044.     })();
  2045.  
  2046.     IntersectionObserver && (() => {
  2047.  
  2048.       // dom manipulation
  2049.  
  2050.       class RAFHub {
  2051.         constructor() {
  2052.           /** @type {number} */
  2053.           this.startAt = 8170;
  2054.           /** @type {number} */
  2055.           this.counter = 0;
  2056.           /** @type {number} */
  2057.           this.rid = 0;
  2058.           /** @type {Map<number, FrameRequestCallback>} */
  2059.           this.funcs = new Map();
  2060.           const funcs = this.funcs;
  2061.           /** @type {FrameRequestCallback} */
  2062.           this.bCallback = this.mCallback.bind(this);
  2063.           this.pClear = () => funcs.clear();
  2064.         }
  2065.         /** @param {DOMHighResTimeStamp} highResTime */
  2066.         mCallback(highResTime) {
  2067.           this.rid = 0;
  2068.           Promise.resolve().then(this.pClear);
  2069.           this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  2070.         }
  2071.         /** @param {FrameRequestCallback} f */
  2072.         request(f) {
  2073.           if (this.counter > 1e9) this.counter = 9;
  2074.           let cid = this.startAt + (++this.counter);
  2075.           this.funcs.set(cid, f);
  2076.           if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  2077.           return cid;
  2078.         }
  2079.         /** @param {number} cid */
  2080.         cancel(cid) {
  2081.           cid = +cid;
  2082.           if (cid > 0) {
  2083.             if (cid <= this.startAt) {
  2084.               return cancelAnimationFrame(cid);
  2085.             }
  2086.             if (this.rid > 0) {
  2087.               this.funcs.delete(cid);
  2088.               if (this.funcs.size === 0) {
  2089.                 cancelAnimationFrame(this.rid);
  2090.                 this.rid = 0;
  2091.               }
  2092.             }
  2093.           }
  2094.         }
  2095.       }
  2096.  
  2097.  
  2098.       const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2099.  
  2100.  
  2101.       let dt0 = Date.now() - 2000;
  2102.       const dateNow = () => Date.now() - dt0;
  2103.       // let lastScroll = 0;
  2104.       // let lastLShow = 0;
  2105.       let lastWheel = 0;
  2106.       let lastMouseDown = 0;
  2107.       let lastMouseUp = 0;
  2108.       let currentMouseDown = false;
  2109.       let lastTouchDown = 0;
  2110.       let lastTouchUp = 0;
  2111.       let currentTouchDown = false;
  2112.       let lastUserInteraction = 0;
  2113.  
  2114.       let scrollChatFn = null;
  2115.  
  2116.       let skipDontRender = true; // true first; false by flushActiveItems_
  2117.       let allowDontRender = null;
  2118.  
  2119.       ENABLE_DELAYED_CHAT_OCCURRENCE && (() => {
  2120.  
  2121.         document.addEventListener('animationstart', (evt) => {
  2122.  
  2123.           if (evt.animationName === 'dontRenderAnimation') {
  2124.             evt.target.classList.remove('dont-render');
  2125.             if (scrollChatFn) scrollChatFn();
  2126.           }
  2127.  
  2128.         }, true);
  2129.  
  2130.         const f = (elm) => {
  2131.           if (elm && elm.nodeType === 1) {
  2132.             if (!skipDontRender && allowDontRender === true) {
  2133.               // innerTextFixFn();
  2134.               elm.classList.add('dont-render');
  2135.             }
  2136.           }
  2137.         }
  2138.  
  2139.         Node.prototype.__appendChild931__ = function (a) {
  2140.           a = dr(a);
  2141.           if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2142.             if (a && a.nodeType === 1) f(a);
  2143.             else if (a instanceof DocumentFragment) {
  2144.               for (let n = a.firstChild; n; n = n.nextSibling) {
  2145.                 f(n);
  2146.               }
  2147.             }
  2148.           }
  2149.         }
  2150.  
  2151.         Node.prototype.__appendChild932__ = function () {
  2152.           this.__appendChild931__.apply(this, arguments);
  2153.           return Node.prototype.appendChild.apply(this, arguments);
  2154.         }
  2155.  
  2156.  
  2157.       })();
  2158.  
  2159.  
  2160.       const watchUserCSS = () => {
  2161.  
  2162.         // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2163.  
  2164.         const getElemFromWR = (nr) => {
  2165.           const n = kRef(nr);
  2166.           if (n && n.isConnected) return n;
  2167.           return null;
  2168.         }
  2169.  
  2170.         const clearContentVisibilitySizing = () => {
  2171.           Promise.resolve().then(() => {
  2172.  
  2173.             let btnShowMoreWR = mWeakRef(document.querySelector('#show-more[disabled]'));
  2174.  
  2175.             let lastVisibleItemWR = null;
  2176.             for (const elm of document.querySelectorAll('[wSr93]')) {
  2177.               if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2178.               elm.setAttribute('wSr93', '');
  2179.               // custom CSS property --wsr94 not working when attribute wSr93 removed
  2180.             }
  2181.             requestAnimationFrame(() => {
  2182.               const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2183.               if (btnShowMore) btnShowMore.click();
  2184.               else {
  2185.                 // would not work if switch it frequently
  2186.                 const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2187.                 if (lastVisibleItem) {
  2188.  
  2189.                   Promise.resolve()
  2190.                     .then(() => lastVisibleItem.scrollIntoView())
  2191.                     .then(() => lastVisibleItem.scrollIntoView(false))
  2192.                     .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2193.                     .catch(e => { }) // break the chain when method not callable
  2194.  
  2195.                 }
  2196.               }
  2197.             });
  2198.  
  2199.           });
  2200.  
  2201.         }
  2202.  
  2203.         const mutObserver = new MutationObserver((mutations) => {
  2204.           for (const mutation of mutations) {
  2205.             if ((mutation.addedNodes || 0).length >= 1) {
  2206.               for (const addedNode of mutation.addedNodes) {
  2207.                 if (addedNode.nodeName === 'STYLE') {
  2208.                   clearContentVisibilitySizing();
  2209.                   return;
  2210.                 }
  2211.               }
  2212.             }
  2213.             if ((mutation.removedNodes || 0).length >= 1) {
  2214.               for (const removedNode of mutation.removedNodes) {
  2215.                 if (removedNode.nodeName === 'STYLE') {
  2216.                   clearContentVisibilitySizing();
  2217.                   return;
  2218.                 }
  2219.               }
  2220.             }
  2221.           }
  2222.         });
  2223.  
  2224.         mutObserver.observe(document.documentElement, {
  2225.           childList: true,
  2226.           subtree: false
  2227.         });
  2228.         mutObserver.observe(document.head, {
  2229.           childList: true,
  2230.           subtree: false
  2231.         });
  2232.         mutObserver.observe(document.body, {
  2233.           childList: true,
  2234.           subtree: false
  2235.         });
  2236.  
  2237.       }
  2238.  
  2239.  
  2240.       class WillChangeController {
  2241.         constructor(itemScroller, willChangeValue) {
  2242.           this.element = itemScroller;
  2243.           this.counter = 0;
  2244.           this.active = false;
  2245.           this.willChangeValue = willChangeValue;
  2246.         }
  2247.  
  2248.         beforeOper() {
  2249.           if (!this.active) {
  2250.             this.active = true;
  2251.             this.element.style.willChange = this.willChangeValue;
  2252.           }
  2253.           this.counter++;
  2254.         }
  2255.  
  2256.         afterOper() {
  2257.           const c = this.counter;
  2258.           requestAnimationFrame(() => {
  2259.             if (c === this.counter) {
  2260.               this.active = false;
  2261.               this.element.style.willChange = '';
  2262.             }
  2263.           });
  2264.         }
  2265.  
  2266.         release() {
  2267.           const element = this.element;
  2268.           this.element = null;
  2269.           this.counter = 1e16;
  2270.           this.active = false;
  2271.           try {
  2272.             element.style.willChange = '';
  2273.           } catch (e) { }
  2274.         }
  2275.  
  2276.       }
  2277.  
  2278.  
  2279.       const { lcRendererElm, visObserver } = (() => {
  2280.  
  2281.  
  2282.  
  2283.         let lcRendererWR = null;
  2284.  
  2285.         const lcRendererElm = () => {
  2286.           let lcRenderer = kRef(lcRendererWR);
  2287.           if (!lcRenderer || !lcRenderer.isConnected) {
  2288.             lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2289.             lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2290.           }
  2291.           return lcRenderer;
  2292.         };
  2293.  
  2294.  
  2295.         let hasFirstShowMore = false;
  2296.  
  2297.         const visObserverFn = (entry) => {
  2298.  
  2299.           const target = entry.target;
  2300.           if (!target) return;
  2301.           // if(target.classList.contains('dont-render')) return;
  2302.           let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2303.           // const h = entry.boundingClientRect.height;
  2304.           /*
  2305.           if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2306.               // e.g. under fullscreen. the element created but not rendered.
  2307.               target.setAttribute('wSr93', '');
  2308.               return;
  2309.           }
  2310.           */
  2311.           if (isVisible) {
  2312.             // target.style.setProperty('--wsr94', h + 'px');
  2313.             target.setAttribute('wSr93', 'visible');
  2314.             if (nNextElem(target) === null) {
  2315.  
  2316.               // firstVisibleItemDetected = true;
  2317.               /*
  2318.                 if (dateNow() - lastScroll < 80) {
  2319.                     lastLShow = 0;
  2320.                     lastScroll = 0;
  2321.                     Promise.resolve().then(clickShowMore);
  2322.                 } else {
  2323.                     lastLShow = dateNow();
  2324.                 }
  2325.                 */
  2326.               // lastLShow = dateNow();
  2327.             } else if (!hasFirstShowMore) { // should more than one item being visible
  2328.               // implement inside visObserver to ensure there is sufficient delay
  2329.               hasFirstShowMore = true;
  2330.               requestAnimationFrame(() => {
  2331.                 // foreground page
  2332.                 // page visibly ready -> load the latest comments at initial loading
  2333.                 const lcRenderer = lcRendererElm();
  2334.                 if (lcRenderer) {
  2335.                   (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2336.                 }
  2337.               });
  2338.             }
  2339.           }
  2340.           else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2341.  
  2342.             // target.style.setProperty('--wsr94', h + 'px');
  2343.             target.setAttribute('wSr93', 'hidden');
  2344.           } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2345.  
  2346.         }
  2347.  
  2348.  
  2349.  
  2350.         const visObserver = new IntersectionObserver((entries) => {
  2351.  
  2352.           for (const entry of entries) {
  2353.  
  2354.             Promise.resolve(entry).then(visObserverFn);
  2355.  
  2356.           }
  2357.  
  2358.         }, {
  2359.           // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2360.           rootMargin: "0px",
  2361.           threshold: [0.05, 0.95],
  2362.         });
  2363.  
  2364.  
  2365.         return { lcRendererElm, visObserver }
  2366.  
  2367.  
  2368.       })();
  2369.  
  2370.       let sk35zResolveFn = null;
  2371.  
  2372.       let firstList = true;
  2373.  
  2374.       const { setupMutObserver } = (() => {
  2375.  
  2376.         const mutFn = (items) => {
  2377.           for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2378.             if (node.hasAttribute('wSr93')) break;
  2379.             node.setAttribute('wSr93', '');
  2380.             visObserver.observe(node);
  2381.           }
  2382.         }
  2383.  
  2384.         const mutObserver = new MutationObserver((mutations) => {
  2385.           const items = (mutations[0] || 0).target;
  2386.           if (!items) return;
  2387.           if (sk35zResolveFn) {
  2388.             sk35zResolveFn();
  2389.             sk35zResolveFn = null;
  2390.           }
  2391.           mutFn(items);
  2392.         });
  2393.  
  2394.         const setupMutObserver = (m2) => {
  2395.           scrollChatFn = null;
  2396.           mutObserver.disconnect();
  2397.           mutObserver.takeRecords();
  2398.           if (m2) {
  2399.             if (typeof m2.__appendChild932__ === 'function') {
  2400.               if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2401.               if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2402.             }
  2403.             mutObserver.observe(m2, {
  2404.               childList: true,
  2405.               subtree: false
  2406.             });
  2407.             mutFn(m2);
  2408.  
  2409.             let isFirstList = firstList;
  2410.             firstList = false;
  2411.  
  2412.             if (ENABLE_OVERFLOW_ANCHOR) {
  2413.  
  2414.               let items = m2;
  2415.               let addedAnchor = false;
  2416.               if (items) {
  2417.                 if (items.nextElementSibling === null) {
  2418.                   items.classList.add('no-anchor');
  2419.                   addedAnchor = true;
  2420.                   items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2421.                 }
  2422.               }
  2423.  
  2424.  
  2425.  
  2426.               if (addedAnchor) {
  2427.                 nodeParent(m2).classList.add('no-anchor'); // required
  2428.               }
  2429.  
  2430.             }
  2431.  
  2432.             // let div = document.createElement('div');
  2433.             // div.id = 'qwcc';
  2434.             // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2435.             // bufferRegion =div;
  2436.  
  2437.             // buffObserver.takeRecords();
  2438.             // buffObserver.disconnect();
  2439.             // buffObserver.observe(div,  {
  2440.             //     childList: true,
  2441.             //     subtree: false
  2442.             // })
  2443.  
  2444.             if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2445.  
  2446.               promiseForCustomYtElementsReady.then(() => {
  2447.  
  2448.                 customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2449.  
  2450.                   setTimeout(() => {
  2451.  
  2452.                     /** @type {HTMLTemplateElement} */
  2453.                     let skz = document.createElement('yt-live-chat-text-message-renderer');
  2454.  
  2455.                     let cz1 = null;
  2456.  
  2457.                     if (skz && 'data' in skz && 'attached' in skz) {
  2458.  
  2459.                       const deferredZy1 = new Promise(resolve => {
  2460.  
  2461.                         skz.attached = function () {
  2462.                           cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2463.                           resolve(skz.textContent);
  2464.                         }
  2465.                         skz.detached = function () {
  2466.  
  2467.                         }
  2468.  
  2469.                       });
  2470.                       skz.id = 'sk35z';
  2471.                       skz.data = {
  2472.                         "message": {
  2473.                           "runs": [
  2474.                             {
  2475.                               "text": "em2o"
  2476.                             },
  2477.                             {
  2478.                               "emoji": {
  2479.                                 "emojiId": "cm35z",
  2480.                                 "shortcuts": [
  2481.                                   ":_s:",
  2482.                                   ":s:"
  2483.                                 ],
  2484.                                 "searchTerms": [
  2485.                                   "_s",
  2486.                                   "s"
  2487.                                 ],
  2488.                                 "image": {
  2489.                                   "thumbnails": [
  2490.                                     {
  2491.                                       "url": "data:image/webp;base64,UklGRjAB",
  2492.                                       "width": 48,
  2493.                                       "height": 48
  2494.                                     }
  2495.                                   ],
  2496.                                   "accessibility": {
  2497.                                     "accessibilityData": {
  2498.                                       "label": "s"
  2499.                                     }
  2500.                                   }
  2501.                                 },
  2502.                                 "isCustomEmoji": true
  2503.                               }
  2504.                             },
  2505.                             {
  2506.                               "text": "ji"
  2507.                             }
  2508.                           ]
  2509.                         },
  2510.                         "authorName": {
  2511.                           "simpleText": "N"
  2512.                         },
  2513.                         "authorPhoto": {
  2514.                           "thumbnails": [
  2515.                             {
  2516.                               "url": "data:image/webp;base64,UklGRjAB",
  2517.                               "width": 64,
  2518.                               "height": 64
  2519.                             }
  2520.                           ]
  2521.                         },
  2522.                         "contextMenuEndpoint": {
  2523.                           "commandMetadata": {
  2524.                             "webCommandMetadata": {
  2525.                               "ignoreNavigation": true
  2526.                             }
  2527.                           },
  2528.                           "liveChatItemContextMenuEndpoint": {
  2529.                             "params": "123=="
  2530.                           }
  2531.                         },
  2532.                         "id": "sk35z",
  2533.                         "timestampUsec": "1232302352350000",
  2534.                         "authorBadges": [
  2535.                           {
  2536.                             "liveChatAuthorBadgeRenderer": {
  2537.                               "customThumbnail": {
  2538.                                 "thumbnails": [
  2539.                                   {
  2540.                                     "url": "data:image/webp;base64,UklGRjAB",
  2541.                                     "width": 16,
  2542.                                     "height": 16
  2543.                                   },
  2544.                                   {
  2545.                                     "url": "data:image/webp;base64,UklGRjAB",
  2546.                                     "width": 32,
  2547.                                     "height": 32
  2548.                                   }
  2549.                                 ]
  2550.                               },
  2551.                               "tooltip": "T",
  2552.                               "accessibility": {
  2553.                                 "accessibilityData": {
  2554.                                   "label": "E"
  2555.                                 }
  2556.                               }
  2557.                             }
  2558.                           }
  2559.                         ],
  2560.                         "authorExternalChannelId": "A",
  2561.                         "contextMenuAccessibility": {
  2562.                           "accessibilityData": {
  2563.                             "label": "E"
  2564.                           }
  2565.                         },
  2566.                         "timestampText": {
  2567.                           "simpleText": "0:43"
  2568.                         }
  2569.                       };
  2570.  
  2571.  
  2572.                       sk35zResolveFn = null;
  2573.                       const deferredMutation = new Promise(resolve => {
  2574.                         sk35zResolveFn = resolve;
  2575.                         HTMLElement.prototype.appendChild.call(m2, skz);
  2576.                       });
  2577.  
  2578.                       Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2579.                         const [zy1, _] = res;
  2580.                         function fn() {
  2581.                           const zy2 = skz.textContent;
  2582.                           const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2583.                           if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2584.                             allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2585.                           }
  2586.                           if (allowDontRender === false) {
  2587.  
  2588.                             console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2589.                               "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2590.                               "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2591.                             );
  2592.  
  2593.                             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');
  2594.  
  2595.                             console.groupEnd();
  2596.                           } else if (allowDontRender === true) {
  2597.                             return true;
  2598.                           }
  2599.                         }
  2600.                         await new Promise(r => setTimeout(r, 1));
  2601.                         if (fn()) {
  2602.                           await new Promise(r => requestAnimationFrame(r));
  2603.                           if (fn()) {
  2604.                             skz.remove();
  2605.                             skz.textContent = '';
  2606.                             console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #11ad44; color: #102624; padding: 2px 4px');
  2607.                           }
  2608.                         }
  2609.                       });
  2610.  
  2611.                     }
  2612.  
  2613.                   }, 1);
  2614.  
  2615.                 })
  2616.  
  2617.               })
  2618.  
  2619.             }
  2620.  
  2621.  
  2622.             if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2623.  
  2624.               (() => {
  2625.  
  2626.                 const tag = 'yt-iframed-player-events-relay'
  2627.                 const dummy = document.createElement(tag);
  2628.  
  2629.                 const cProto = getProto(dummy);
  2630.                 if (!cProto || !cProto.handlePostMessage_) {
  2631.                   console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2632.                   return;
  2633.                 }
  2634.  
  2635.                 if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2636.  
  2637.                   cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2638.  
  2639.                   cProto.handlePostMessage_ = function (a) {
  2640.  
  2641.                     const da = (a || 0).data || 0;
  2642.                     if (typeof da === 'object') {
  2643.  
  2644.                       // console.log('handlePostMessage_', da)
  2645.                       const qc = da['yt-player-state-change'];
  2646.                       if (qc === 3) { // pause
  2647.                         pairForPauseResume++;
  2648.                         pairForPauseResumeM++;
  2649.                       } else if (qc === 1) { // pause
  2650.                         pairForPauseResume++;
  2651.                         pairForPauseResumeM++;
  2652.                       } else if (qc === 2) {
  2653.                         pairForPauseResume++;
  2654.                         pairForPauseResumeM++;
  2655.                       }
  2656.                       if (pairForPauseResume > 1e9) pairForPauseResume = pairForPauseResume % 1e4;
  2657.                       if (pairForPauseResumeM > 1e9) pairForPauseResumeM = pairForPauseResumeM % 1e4;
  2658.                       return this.handlePostMessage66_(a);
  2659.  
  2660.                     }
  2661.  
  2662.  
  2663.                   }
  2664.  
  2665.                 }
  2666.  
  2667.  
  2668.               })();
  2669.  
  2670.             }
  2671.  
  2672.             if (isFirstList) {
  2673.               setTimeout(() => {
  2674.                 const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  2675.                 if (!tickerRenderer) return;
  2676.  
  2677.                 const items = (tickerRenderer.$ || 0).items || 0;
  2678.                 if (!items) return;
  2679.                 const template = document.createElement('template');
  2680.                 template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  2681.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  2682.                 dimmed="" [dummy777]>
  2683.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  2684.                   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));">
  2685.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  2686.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  2687.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  2688.                       style="background-color: transparent;" loaded=""><img id="img"
  2689.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  2690.                         src="data:image/webp;base64,UklGRjAB"></yt-img-shadow777>
  2691.               
  2692.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  2693.                   </div>
  2694.                 </div>
  2695.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  2696.                 const dummy777 = template.content.firstElementChild;
  2697.                 items.appendChild(dummy777);
  2698.                 Promise.resolve(dummy777).then((dummy777) => {
  2699.                   let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  2700.                   if (container.isConnected === true) {
  2701.  
  2702.                     const evaluated = `${window.getComputedStyle(container).background}`;
  2703.  
  2704.                     container = null;
  2705.                     dummy777.remove();
  2706.                     dummy777.textContent = '';
  2707.                     dummy777 = null;
  2708.  
  2709.                     if (evaluated.indexOf('0.') < 4) {
  2710.  
  2711.                       // not fulfilling
  2712.                       // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  2713.  
  2714.                       console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2715.                         "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2716.                         "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2717.                       );
  2718.                       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');
  2719.                       console.groupEnd();
  2720.  
  2721.                     }
  2722.                   }
  2723.                 });
  2724.  
  2725.               }, 800);
  2726.             }
  2727.  
  2728.           }
  2729.         }
  2730.  
  2731.         return { setupMutObserver };
  2732.  
  2733.  
  2734.  
  2735.       })();
  2736.  
  2737.       const setupEvents = () => {
  2738.  
  2739.  
  2740.         let scrollCount = 0;
  2741.  
  2742.         const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  2743.  
  2744.  
  2745.         const delayFlushActiveItemsAfterUserActionK_ = () => {
  2746.  
  2747.           const lcRenderer = lcRendererElm();
  2748.           if (lcRenderer) {
  2749.             const cnt = (lcRenderer.inst || lcRenderer);
  2750.             if (!cnt.hasUserJustInteracted11_) return;
  2751.             if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  2752.               cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  2753.             }
  2754.           }
  2755.  
  2756.         }
  2757.  
  2758.         document.addEventListener('scroll', (evt) => {
  2759.           if (!evt || !evt.isTrusted) return;
  2760.           // lastScroll = dateNow();
  2761.           if (++scrollCount > 1e9) scrollCount = 9;
  2762.         }, passiveCapture); // support contain => support passive
  2763.  
  2764.         let lastScrollCount = -1;
  2765.         document.addEventListener('wheel', (evt) => {
  2766.           if (!evt || !evt.isTrusted) return;
  2767.           if (lastScrollCount === scrollCount) return;
  2768.           lastScrollCount = scrollCount;
  2769.           lastWheel = dateNow();
  2770.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2771.         }, passiveCapture); // support contain => support passive
  2772.  
  2773.         document.addEventListener('mousedown', (evt) => {
  2774.           if (!evt || !evt.isTrusted) return;
  2775.           if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2776.           lastMouseDown = dateNow();
  2777.           currentMouseDown = true;
  2778.           lastUserInteraction = lastMouseDown;
  2779.         }, passiveCapture);
  2780.  
  2781.         document.addEventListener('pointerdown', (evt) => {
  2782.           if (!evt || !evt.isTrusted) return;
  2783.           if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2784.           lastMouseDown = dateNow();
  2785.           currentMouseDown = true;
  2786.           lastUserInteraction = lastMouseDown;
  2787.         }, passiveCapture);
  2788.  
  2789.         document.addEventListener('click', (evt) => {
  2790.           if (!evt || !evt.isTrusted) return;
  2791.           if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2792.           lastMouseDown = lastMouseUp = dateNow();
  2793.           currentMouseDown = false;
  2794.           lastUserInteraction = lastMouseDown;
  2795.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2796.         }, passiveCapture);
  2797.  
  2798.         document.addEventListener('tap', (evt) => {
  2799.           if (!evt || !evt.isTrusted) return;
  2800.           if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2801.           lastMouseDown = lastMouseUp = dateNow();
  2802.           currentMouseDown = false;
  2803.           lastUserInteraction = lastMouseDown;
  2804.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2805.         }, passiveCapture);
  2806.  
  2807.  
  2808.         document.addEventListener('mouseup', (evt) => {
  2809.           if (!evt || !evt.isTrusted) return;
  2810.           if (currentMouseDown) {
  2811.             lastMouseUp = dateNow();
  2812.             currentMouseDown = false;
  2813.             lastUserInteraction = lastMouseUp;
  2814.             delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2815.           }
  2816.         }, passiveCapture);
  2817.  
  2818.  
  2819.         document.addEventListener('pointerup', (evt) => {
  2820.           if (!evt || !evt.isTrusted) return;
  2821.           if (currentMouseDown) {
  2822.             lastMouseUp = dateNow();
  2823.             currentMouseDown = false;
  2824.             lastUserInteraction = lastMouseUp;
  2825.             delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2826.           }
  2827.         }, passiveCapture);
  2828.  
  2829.         document.addEventListener('touchstart', (evt) => {
  2830.           if (!evt || !evt.isTrusted) return;
  2831.           lastTouchDown = dateNow();
  2832.           currentTouchDown = true;
  2833.           lastUserInteraction = lastTouchDown;
  2834.         }, passiveCapture);
  2835.  
  2836.         document.addEventListener('touchmove', (evt) => {
  2837.           if (!evt || !evt.isTrusted) return;
  2838.           lastTouchDown = dateNow();
  2839.           currentTouchDown = true;
  2840.           lastUserInteraction = lastTouchDown;
  2841.         }, passiveCapture);
  2842.  
  2843.         document.addEventListener('touchend', (evt) => {
  2844.           if (!evt || !evt.isTrusted) return;
  2845.           if (currentTouchDown) {
  2846.             lastTouchUp = dateNow();
  2847.             currentTouchDown = false;
  2848.             lastUserInteraction = lastTouchUp;
  2849.             delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2850.           }
  2851.         }, passiveCapture);
  2852.  
  2853.         document.addEventListener('touchcancel', (evt) => {
  2854.           if (!evt || !evt.isTrusted) return;
  2855.           if (currentTouchDown) {
  2856.             lastTouchUp = dateNow();
  2857.             currentTouchDown = false;
  2858.             lastUserInteraction = lastTouchUp;
  2859.             delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2860.           }
  2861.         }, passiveCapture);
  2862.  
  2863.  
  2864.       }
  2865.  
  2866.  
  2867.       const onRegistryReadyForDOMOperations = () => {
  2868.         let firstCheckedOnYtInit = false;
  2869.  
  2870.         const mightFirstCheckOnYtInit = () => {
  2871.           if (firstCheckedOnYtInit) return;
  2872.           firstCheckedOnYtInit = true;
  2873.  
  2874.           if (!document.body || !document.head) return;
  2875.  
  2876.           if (!assertor(() => location.pathname.startsWith('/live_chat') && location.search.indexOf('continuation=') >= 0)) return;
  2877.  
  2878.           addCssManaged();
  2879.  
  2880.           let efsContainer = document.getElementById('elzm-fonts-yk75g');
  2881.           if (efsContainer && efsContainer.parentNode !== document.body) {
  2882.             document.body.appendChild(efsContainer);
  2883.           }
  2884.  
  2885.  
  2886.         }
  2887.  
  2888.         if (!assertor(() => location.pathname.startsWith('/live_chat') && location.search.indexOf('continuation=') >= 0)) return;
  2889.         // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  2890.  
  2891.         if (document.documentElement && document.head) {
  2892.  
  2893.           addCssManaged();
  2894.  
  2895.         }
  2896.         // console.log(document.body===null)
  2897.  
  2898.         customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  2899.  
  2900.  
  2901.           const tag = "yt-live-chat-item-list-renderer"
  2902.           const dummy = document.createElement(tag);
  2903.  
  2904.  
  2905.           const cProto = getProto(dummy);
  2906.           if (!cProto || !cProto.attached) {
  2907.             console.warn(`proto.attached for ${tag} is unavailable.`);
  2908.             return;
  2909.           }
  2910.  
  2911.  
  2912.           mightFirstCheckOnYtInit();
  2913.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  2914.           console.log("[Begin]");
  2915.  
  2916.           const mclp = cProto;
  2917.           try {
  2918.             assertor(() => typeof mclp.scrollToBottom_ === 'function');
  2919.             assertor(() => typeof mclp.flushActiveItems_ === 'function');
  2920.             assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  2921.             assertor(() => typeof mclp.setAtBottom === 'function');
  2922.             assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  2923.             assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  2924.           } catch (e) { }
  2925.  
  2926.  
  2927.           try {
  2928.             assertor(() => typeof mclp.attached === 'function');
  2929.             assertor(() => typeof mclp.detached === 'function');
  2930.             assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  2931.             assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  2932.             assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  2933.             assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  2934.             assertor(() => typeof mclp.smoothScroll_ === 'function');
  2935.             assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  2936.           } catch (e) { }
  2937.  
  2938.           mclp.__intermediate_delay__ = null;
  2939.  
  2940.           let mzk = 0;
  2941.           let myk = 0;
  2942.           let mlf = 0;
  2943.           let myw = 0;
  2944.           let mzt = 0;
  2945.           let zarr = null;
  2946.           let mlg = 0;
  2947.  
  2948.           if ((mclp.clearList || 0).length === 0) {
  2949.             assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  2950.             mclp.clearList66 = mclp.clearList;
  2951.             mclp.clearList = function () {
  2952.               mzk++;
  2953.               myk++;
  2954.               mlf++;
  2955.               myw++;
  2956.               mzt++;
  2957.               mlg++;
  2958.               zarr = null;
  2959.               this.__intermediate_delay__ = null;
  2960.               this.clearList66();
  2961.             };
  2962.             console.log("clearList", "OK");
  2963.           } else {
  2964.             console.log("clearList", "NG");
  2965.           }
  2966.  
  2967.  
  2968.           let onListRendererAttachedDone = false;
  2969.  
  2970.           function setList(itemOffset, items) {
  2971.  
  2972.             const isFirstTime = onListRendererAttachedDone === false;
  2973.  
  2974.             if (isFirstTime) {
  2975.               onListRendererAttachedDone = true;
  2976.               Promise.resolve().then(watchUserCSS);
  2977.               addCssManaged();
  2978.               setupEvents();
  2979.             }
  2980.  
  2981.             setupStyle(itemOffset, items);
  2982.  
  2983.             setupMutObserver(items);
  2984.           }
  2985.  
  2986.           mclp.attached419 = async function () {
  2987.  
  2988.             if (!this.isAttached) return;
  2989.  
  2990.             let maxTrial = 16;
  2991.             while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  2992.               if (--maxTrial < 0 || !this.isAttached) return;
  2993.               await new Promise(requestAnimationFrame);
  2994.             }
  2995.  
  2996.             if (this.isAttached !== true) return;
  2997.  
  2998.             if (!this.$) {
  2999.               console.warn("!this.$");
  3000.               return;
  3001.             }
  3002.             if (!this.$) return;
  3003.             /** @type {HTMLElement | null} */
  3004.             const itemScroller = this.$['item-scroller'];
  3005.             /** @type {HTMLElement | null} */
  3006.             const itemOffset = this.$['item-offset'];
  3007.             /** @type {HTMLElement | null} */
  3008.             const items = this.$['items'];
  3009.  
  3010.             if (!itemScroller || !itemOffset || !items) {
  3011.               console.warn("items.parentNode !== itemOffset");
  3012.               return;
  3013.             }
  3014.  
  3015.             if (nodeParent(items) !== itemOffset) {
  3016.  
  3017.               console.warn("items.parentNode !== itemOffset");
  3018.               return;
  3019.             }
  3020.  
  3021.  
  3022.             if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3023.  
  3024.               console.warn("id incorrect");
  3025.               return;
  3026.             }
  3027.  
  3028.             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')
  3029.  
  3030.             if (!isTargetItems) {
  3031.               console.warn("!isTargetItems");
  3032.               return;
  3033.             }
  3034.  
  3035.             setList(itemOffset, items);
  3036.  
  3037.           }
  3038.  
  3039.           mclp.attached331 = mclp.attached;
  3040.           mclp.attached = function () {
  3041.             this.attached419 && this.attached419();
  3042.             return this.attached331();
  3043.           }
  3044.  
  3045.           mclp.detached331 = mclp.detached;
  3046.  
  3047.           mclp.detached = function () {
  3048.             setupMutObserver();
  3049.             return this.detached331();
  3050.           }
  3051.  
  3052.           const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3053.           for (const t29 of t29s) {
  3054.             if ((t29.inst || t29).isAttached === true) {
  3055.               t29.attached419();
  3056.             }
  3057.           }
  3058.  
  3059.           if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3060.  
  3061.             assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3062.             assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3063.  
  3064.             /** @type {Map<number, any>} */
  3065.             const aMap = new Map();
  3066.             let count = 6150;
  3067.             mclp.async66 = mclp.async;
  3068.             mclp.async = function (e, f) {
  3069.               // ensure the previous operation is done
  3070.               // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3071.               const hasF = arguments.length === 2;
  3072.               const stack = new Error().stack;
  3073.               const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3074.               if (count > 1e9) count = 6159;
  3075.               const resId = ++count;
  3076.               aMap.set(resId, e);
  3077.               (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3078.                 const rp = aMap.get(resId);
  3079.                 if (typeof rp !== 'function') {
  3080.                   return;
  3081.                 }
  3082.                 let cancelCall = false;
  3083.                 if (isFlushAsync) {
  3084.                   if (rk < 0) {
  3085.                     cancelCall = true;
  3086.                   } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3087.                     cancelCall = true;
  3088.                   }
  3089.                 }
  3090.                 if (cancelCall) {
  3091.                   aMap.delete(resId);
  3092.                 } else {
  3093.                   const asyncEn = function () {
  3094.                     aMap.delete(resId);
  3095.                     return rp.apply(this, arguments);
  3096.                   };
  3097.                   aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3098.                 }
  3099.               });
  3100.  
  3101.               return resId;
  3102.             }
  3103.  
  3104.             mclp.cancelAsync66 = mclp.cancelAsync;
  3105.             mclp.cancelAsync = function (resId) {
  3106.               if (resId <= 6150) {
  3107.                 this.cancelAsync66(resId);
  3108.               } else if (aMap.has(resId)) {
  3109.                 const rp = aMap.get(resId);
  3110.                 aMap.delete(resId);
  3111.                 if (typeof rp !== 'function') {
  3112.                   this.cancelAsync66(rp);
  3113.                 }
  3114.               }
  3115.             }
  3116.  
  3117.             console.log("async", "OK");
  3118.           } else {
  3119.             console.log("async", "NG");
  3120.           }
  3121.  
  3122.  
  3123.           if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3124.  
  3125.             assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3126.             mclp.showNewItems66_ = mclp.showNewItems_;
  3127.  
  3128.             mclp.showNewItems77_ = async function () {
  3129.               if (myk > 1e9) myk = 9;
  3130.               let tid = ++myk;
  3131.  
  3132.               await new Promise(requestAnimationFrame);
  3133.  
  3134.               if (tid !== myk) {
  3135.                 return;
  3136.               }
  3137.  
  3138.               const cnt = this;
  3139.  
  3140.               await Promise.resolve();
  3141.               cnt.showNewItems66_();
  3142.  
  3143.               await Promise.resolve();
  3144.  
  3145.             }
  3146.  
  3147.             mclp.showNewItems_ = function () {
  3148.  
  3149.               const cnt = this;
  3150.               cnt.__intermediate_delay__ = new Promise(resolve => {
  3151.                 cnt.showNewItems77_().then(() => {
  3152.                   resolve();
  3153.                 });
  3154.               });
  3155.             }
  3156.  
  3157.             console.log("showNewItems_", "OK");
  3158.           } else {
  3159.             console.log("showNewItems_", "NG");
  3160.           }
  3161.  
  3162.  
  3163.           if ((mclp.flushActiveItems_ || 0).length === 0) {
  3164.  
  3165.             assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3166.  
  3167.             let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3168.  
  3169.             let contensWillChangeController = null;
  3170.  
  3171.             mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3172.  
  3173.             mclp.flushActiveItems78_ = async function (tid) {
  3174.               try {
  3175.                 if (tid !== mlf) return;
  3176.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3177.                 let logger = false;
  3178.                 const cnt = this;
  3179.                 let immd = cnt.__intermediate_delay__;
  3180.                 await new Promise(requestAnimationFrame);
  3181.  
  3182.                 if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3183.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3184.  
  3185.                 mlf++;
  3186.                 if (mlg > 1e9) mlg = 9;
  3187.                 ++mlg;
  3188.  
  3189.                 const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3190.                 const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3191.                 let changeMaxItemsToDisplay = false;
  3192.                 const activeItemsLen = this.activeItems_.length;
  3193.                 if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3194.                   logger = true;
  3195.  
  3196.                   groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3197.  
  3198.                   logger && console.log('[Begin]')
  3199.  
  3200.                   console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3201.                   if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3202.                     console.log('reduce maxitems');
  3203.                     if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3204.                       // as all the rendered chats are already "outdated"
  3205.                       // all old chats shall remove and reduced number of few chats will be rendered
  3206.                       // then restore to the original number
  3207.                       changeMaxItemsToDisplay = true;
  3208.                       this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3209.                       console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3210.                     }
  3211.                     this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3212.                     //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3213.  
  3214.                     console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3215.                   } else {
  3216.                     this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3217.  
  3218.                     console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3219.                   }
  3220.                 }
  3221.                 // it is found that it will render all stacked chats after switching back from background
  3222.                 // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3223.                 // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3224.  
  3225.  
  3226.                 const items = (cnt.$ || 0).items;
  3227.  
  3228.                 if (USE_WILL_CHANGE_CONTROLLER) {
  3229.                   if (contensWillChangeController && contensWillChangeController.element !== items) {
  3230.                     contensWillChangeController.release();
  3231.                     contensWillChangeController = null;
  3232.                   }
  3233.                   if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3234.                 }
  3235.                 const wcController = contensWillChangeController;
  3236.                 cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3237.                 wcController && wcController.beforeOper();
  3238.                 await Promise.resolve();
  3239.                 const acItems = cnt.activeItems_;
  3240.                 const len1 = acItems.length;
  3241.                 if(!len1) console.warn('cnt.activeItems_.length = 0');
  3242.                 let waitFor = [];
  3243.  
  3244.  
  3245.                 /** @type {Set<string>} */
  3246.                 const imageLinks = new Set();
  3247.  
  3248.                 if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3249.                   for (const item of acItems) {
  3250.                     fixLiveChatItem(item, imageLinks);
  3251.                   }
  3252.                 }
  3253.                 if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3254.                   if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3255.                   if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3256.  
  3257.                   // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3258.                   const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3259.                   // preload performs the high priority fetching.
  3260.                   // prefetch delays the chat display if the video resoruce is demanding.
  3261.  
  3262.                   if (rel) {
  3263.  
  3264.                     imageLinks.forEach(imageLink => {
  3265.                       let d = false;
  3266.                       const isEmoji = imageLink.includes('/emoji/');
  3267.                       const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3268.                       if (!pretechedSet.has(imageLink)) {
  3269.                         pretechedSet.add(imageLink);
  3270.                         d = true;
  3271.                       }
  3272.                       if (d) {
  3273.                         waitFor.push(linker(null, rel, imageLink, 'image'));
  3274.  
  3275.                       }
  3276.                     })
  3277.  
  3278.                   }
  3279.  
  3280.                 }
  3281.  
  3282.                 skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3283.                 // console.log('ss1', Date.now())
  3284.                 if (waitFor.length > 0) {
  3285.                   await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3286.                 }
  3287.                 waitFor.length = 0;
  3288.                 waitFor = null;
  3289.                 // console.log('ss2', Date.now())
  3290.                 cnt.flushActiveItems66_();
  3291.                 skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3292.                 const len2 = cnt.activeItems_.length;
  3293.                 const bAsync = len1 !== len2;
  3294.                 await Promise.resolve();
  3295.                 if (wcController) {
  3296.                   if (bAsync) {
  3297.                     cnt.async(() => {
  3298.                       wcController.afterOper();
  3299.                     });
  3300.                   } else {
  3301.                     wcController.afterOper();
  3302.                   }
  3303.                 }
  3304.                 if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3305.                   this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3306.  
  3307.                   logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3308.                   //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3309.                 } else if (changeMaxItemsToDisplay) {
  3310.  
  3311.                   logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3312.                     maxItemsToDisplay: this.data.maxItemsToDisplay,
  3313.                     reducedMaxItemsToDisplay,
  3314.                     originalMaxItemsToDisplay: tmpMaxItemsCount
  3315.                   });
  3316.                 }
  3317.                 logger && console.log('[End]')
  3318.  
  3319.                 logger && console.groupEnd();
  3320.  
  3321.                 if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3322.  
  3323.  
  3324.                   const ff = () => {
  3325.  
  3326.                     if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3327.                     //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3328.                     if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3329.                       cnt.scrollToBottom_();
  3330.  
  3331.                       Promise.resolve().then(() => {
  3332.  
  3333.                         if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3334.                         if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3335.                       });
  3336.  
  3337.  
  3338.                     }
  3339.                   }
  3340.  
  3341.                   ff();
  3342.  
  3343.  
  3344.                   Promise.resolve().then(ff);
  3345.  
  3346.                   // requestAnimationFrame(ff);
  3347.                 } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3348.  
  3349.                   const knt = cnt;
  3350.                   if (!scrollChatFn) {
  3351.                     const cnt = knt;
  3352.                     const f = () => {
  3353.                       const itemScroller = cnt.itemScroller;
  3354.                       if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3355.                       if (!cnt.atBottom) {
  3356.                         cnt.scrollToBottom_();
  3357.                       } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3358.                         itemScroller.scrollTop = itemScroller.scrollHeight;
  3359.                       }
  3360.                     };
  3361.                     scrollChatFn = () => Promise.resolve().then(f).then(f);
  3362.                   }
  3363.  
  3364.                   if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3365.                 }
  3366.  
  3367.                 return 1;
  3368.  
  3369.  
  3370.               } catch (e) {
  3371.                 console.warn(e);
  3372.               }
  3373.             }
  3374.  
  3375.             mclp.flushActiveItems77_ = function () {
  3376.  
  3377.               return new Promise(resResolve => {
  3378.                 try {
  3379.                   const cnt = this;
  3380.                   if (mlf > 1e9) mlf = 9;
  3381.                   let tid = ++mlf;
  3382.                   const hostElement = cnt.hostElement || cnt;
  3383.                   if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3384.                   if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3385.  
  3386.                   // 4 times to maxItems to avoid frequent trimming.
  3387.                   // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3388.  
  3389.                   const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3390.                   this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3391.                   if (cnt.canScrollToBottom_()) {
  3392.                     cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3393.                       .then(() => cnt.flushActiveItems78_(tid)) // async function
  3394.                       .then((asyncResult) => {
  3395.                         resResolve(asyncResult); // either undefined or 1
  3396.                         resResolve = null;
  3397.                       }).catch((e) => {
  3398.                         console.warn(e);
  3399.                         if (resResolve) resResolve();
  3400.                       });
  3401.                   } else {
  3402.                     resResolve(2);
  3403.                     resResolve = null;
  3404.                   }
  3405.                 } catch (e) {
  3406.                   console.warn(e);
  3407.                   if (resResolve) resResolve();
  3408.                 }
  3409.  
  3410.  
  3411.               });
  3412.  
  3413.             }
  3414.  
  3415.             mclp.flushActiveItems_ = function () {
  3416.               const cnt = this;
  3417.  
  3418.               if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  3419.  
  3420.               if (cnt.activeItems_.length === 0) {
  3421.                 cnt.__intermediate_delay__ = null;
  3422.                 return;
  3423.               }
  3424.  
  3425.               const cntData = ((cnt || 0).data || 0);
  3426.               if (cntData.maxItemsToDisplay944 === undefined) {
  3427.                 cntData.maxItemsToDisplay944 = null;
  3428.                 if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  3429.                 cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  3430.               }
  3431.  
  3432.               // ignore previous __intermediate_delay__ and create a new one
  3433.               cnt.__intermediate_delay__ = new Promise(resolve => {
  3434.                 cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  3435.                   if (rt === 1) {
  3436.                     resolve(1); // success, scroll to bottom
  3437.                     if (hasMoreMessageState === 1) {
  3438.                       hasMoreMessageState = 0;
  3439.                       const showMore = (cnt.$ || 0)['show-more'];
  3440.                       if (showMore) {
  3441.                         showMore.classList.remove('has-new-messages-miuzp');
  3442.                       }
  3443.                     }
  3444.                   }
  3445.                   else if (rt === 2) {
  3446.                     resolve(2); // success, trim
  3447.                     if (hasMoreMessageState === 0) {
  3448.                       hasMoreMessageState = 1;
  3449.                       const showMore = cnt.$['show-more'];
  3450.                       if (showMore) {
  3451.                         showMore.classList.add('has-new-messages-miuzp');
  3452.                       }
  3453.                     }
  3454.                   }
  3455.                   else resolve(-1); // skip
  3456.                 }).catch(e => {
  3457.                   console.warn(e);
  3458.                 });
  3459.               });
  3460.  
  3461.             }
  3462.             console.log("flushActiveItems_", "OK");
  3463.           } else {
  3464.             console.log("flushActiveItems_", "NG");
  3465.           }
  3466.  
  3467.           mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  3468.             try {
  3469.               if (mlg > 1e9) mlg = 9;
  3470.               const tid = ++mlg;
  3471.               const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  3472.               const runCond = () => this.canScrollToBottom_();
  3473.               if (!keepTrialCond()) return;
  3474.               if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  3475.               await new Promise(r => setTimeout(r, 80));
  3476.               if (!keepTrialCond()) return;
  3477.               if (runCond()) return this.flushActiveItems_() | 1;
  3478.               await new Promise(requestAnimationFrame);
  3479.               if (runCond()) return this.flushActiveItems_() | 1;
  3480.             } catch (e) {
  3481.               console.warn(e);
  3482.             }
  3483.           }
  3484.  
  3485.           if ((mclp.atBottomChanged_ || 0).length === 1) {
  3486.             // note: if the scrolling is too frequent, the show more visibility might get wrong.
  3487.             assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  3488.  
  3489.             const querySelector = HTMLElement.prototype.querySelector;
  3490.             const U = (element) => ({
  3491.               querySelector: (selector) => querySelector.call(element, selector)
  3492.             });
  3493.  
  3494.             let qid = 0;
  3495.             mclp.atBottomChanged_ = function (a) {
  3496.               let tid = ++qid;
  3497.               let b = this;
  3498.               a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  3499.                 if (tid !== qid) return;
  3500.                 U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  3501.               }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  3502.                 this.hideShowMoreAsync_ = null,
  3503.                 U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  3504.             }
  3505.  
  3506.             console.log("atBottomChanged_", "OK");
  3507.           } else {
  3508.             console.log("atBottomChanged_", "NG");
  3509.           }
  3510.  
  3511.           if ((mclp.onScrollItems_ || 0).length === 1) {
  3512.  
  3513.             assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  3514.             mclp.onScrollItems66_ = mclp.onScrollItems_;
  3515.             mclp.onScrollItems77_ = async function (evt) {
  3516.               if (myw > 1e9) myw = 9;
  3517.               let tid = ++myw;
  3518.  
  3519.               await new Promise(requestAnimationFrame);
  3520.  
  3521.               if (tid !== myw) {
  3522.                 return;
  3523.               }
  3524.  
  3525.               const cnt = this;
  3526.  
  3527.               await Promise.resolve();
  3528.               if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  3529.                 await Promise.resolve().then(() => {
  3530.                   this.ytRendererBehavior.onScroll(evt);
  3531.                 }).then(() => {
  3532.                   if (this.canScrollToBottom_()) {
  3533.                     const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  3534.                     if (hasUserJustInteracted) {
  3535.                       // only when there is an user action
  3536.                       this.setAtBottom();
  3537.                       return 1;
  3538.                     }
  3539.                   } else {
  3540.                     // no message inserting
  3541.                     this.setAtBottom();
  3542.                     return 1;
  3543.                   }
  3544.                 }).then((r) => {
  3545.  
  3546.                   if (this.activeItems_.length) {
  3547.  
  3548.                     if (this.canScrollToBottom_()) {
  3549.                       this.flushActiveItems_();
  3550.                       return 1 && r;
  3551.                     } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  3552.                       // delayed due to user action
  3553.                       this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  3554.                       return 0;
  3555.                     }
  3556.                   }
  3557.                 }).then((r) => {
  3558.                   if (r) {
  3559.                     // ensure setAtBottom is correctly set
  3560.                     this.setAtBottom();
  3561.                   }
  3562.                 });
  3563.               } else {
  3564.                 cnt.onScrollItems66_(evt);
  3565.               }
  3566.  
  3567.               await Promise.resolve();
  3568.  
  3569.             }
  3570.  
  3571.             mclp.onScrollItems_ = function (evt) {
  3572.  
  3573.               const cnt = this;
  3574.               cnt.__intermediate_delay__ = new Promise(resolve => {
  3575.                 cnt.onScrollItems77_(evt).then(() => {
  3576.                   resolve();
  3577.                 });
  3578.               });
  3579.             }
  3580.             console.log("onScrollItems_", "OK");
  3581.           } else {
  3582.             console.log("onScrollItems_", "NG");
  3583.           }
  3584.  
  3585.           if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  3586.  
  3587.             assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  3588.             mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  3589.  
  3590.             mclp.handleLiveChatActions77_ = async function (arr) {
  3591.               if (typeof (arr || 0).length !== 'number') {
  3592.                 this.handleLiveChatActions66_(arr);
  3593.                 return;
  3594.               }
  3595.               if (mzt > 1e9) mzt = 9;
  3596.               let tid = ++mzt;
  3597.  
  3598.               if (zarr === null) zarr = arr;
  3599.               else Array.prototype.push.apply(zarr, arr);
  3600.               arr = null;
  3601.  
  3602.               await new Promise(requestAnimationFrame);
  3603.  
  3604.               if (tid !== mzt || zarr === null) {
  3605.                 return;
  3606.               }
  3607.  
  3608.               const carr = zarr;
  3609.               zarr = null;
  3610.  
  3611.               await Promise.resolve();
  3612.               this.handleLiveChatActions66_(carr);
  3613.               await Promise.resolve();
  3614.  
  3615.             }
  3616.  
  3617.             mclp.handleLiveChatActions_ = function (arr) {
  3618.  
  3619.               const cnt = this;
  3620.               cnt.__intermediate_delay__ = new Promise(resolve => {
  3621.                 cnt.handleLiveChatActions77_(arr).then(() => {
  3622.                   resolve();
  3623.                 });
  3624.               });
  3625.             }
  3626.             console.log("handleLiveChatActions_", "OK");
  3627.           } else {
  3628.             console.log("handleLiveChatActions_", "NG");
  3629.           }
  3630.  
  3631.           mclp.hasUserJustInteracted11_ = () => {
  3632.             const t = dateNow();
  3633.             return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  3634.           }
  3635.  
  3636.           if ((mclp.canScrollToBottom_ || 0).length === 0) {
  3637.  
  3638.             assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  3639.  
  3640.             mclp.canScrollToBottom_ = function () {
  3641.               return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  3642.             }
  3643.  
  3644.             console.log("canScrollToBottom_", "OK");
  3645.           } else {
  3646.             console.log("canScrollToBottom_", "NG");
  3647.           }
  3648.  
  3649.           if (ENABLE_NO_SMOOTH_TRANSFORM) {
  3650.  
  3651.             mclp.isSmoothScrollEnabled_ = function () {
  3652.               return false;
  3653.             }
  3654.  
  3655.             mclp.maybeResizeScrollContainer_ = function () {
  3656.               //
  3657.             }
  3658.  
  3659.             mclp.refreshOffsetContainerHeight_ = function () {
  3660.               //
  3661.             }
  3662.  
  3663.             mclp.smoothScroll_ = function () {
  3664.               //
  3665.             }
  3666.  
  3667.             mclp.resetSmoothScroll_ = function () {
  3668.               //
  3669.             }
  3670.             console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  3671.           } else {
  3672.             console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  3673.           }
  3674.  
  3675.           if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3676.  
  3677.             mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  3678.             mclp.handleAddChatItemAction_ = function (a) {
  3679.               try {
  3680.                 if (a && typeof a === 'object' && !('length' in a)) {
  3681.                   fixLiveChatItem(a.item, null);
  3682.                   console.assert(arguments[0] === a);
  3683.                 }
  3684.               } catch (e) { console.warn(e) }
  3685.               return this.handleAddChatItemAction66_.apply(this, arguments);
  3686.             }
  3687.  
  3688.             if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3689.           } else {
  3690.  
  3691.             if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3692.           }
  3693.  
  3694.  
  3695.           if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3696.  
  3697.             mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  3698.             mclp.handleReplaceChatItemAction_ = function (a) {
  3699.               try {
  3700.                 if (a && typeof a === 'object' && !('length' in a)) {
  3701.                   fixLiveChatItem(a.replacementItem, null);
  3702.                   console.assert(arguments[0] === a);
  3703.                 }
  3704.               } catch (e) { console.warn(e) }
  3705.               return this.handleReplaceChatItemAction66_.apply(this, arguments);
  3706.             }
  3707.  
  3708.             if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3709.           } else {
  3710.  
  3711.             if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3712.           }
  3713.  
  3714.           console.log("[End]");
  3715.           console.groupEnd();
  3716.  
  3717.         });
  3718.  
  3719.  
  3720.         const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  3721.  
  3722.           let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  3723.  
  3724.           if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  3725.  
  3726.             // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  3727.             let v = `${attrValue}`;
  3728.             // conside a ticker is 101px width
  3729.             // 1% = 1.01px
  3730.             // 0.2% = 0.202px
  3731.  
  3732.  
  3733.             const ratio1 = (yd.ratio * 100);
  3734.             if (ratio1 > -1) { // avoid NaN
  3735.  
  3736.               // countdownDurationMs
  3737.               // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  3738.               // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  3739.               // 150000 - 1%    <1% = 1.5s>
  3740.               // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  3741.               // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  3742.  
  3743.               // 99px * 5% = 4.95px
  3744.  
  3745.               // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  3746.  
  3747.  
  3748.               // 1% Duration
  3749.  
  3750.               let ratio2 = ratio1;
  3751.  
  3752.               const ydd = yd.data;
  3753.               if (ydd) {
  3754.  
  3755.                 const d1 = ydd.durationSec;
  3756.                 const d2 = ydd.fullDurationSec;
  3757.  
  3758.                 // @ step timing [min. 0.2%]
  3759.                 let numOfSteps = 500;
  3760.                 if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  3761.                   if (d2 > 400) numOfSteps = 500; // 0.2%
  3762.                   else if (d2 > 200) numOfSteps = 200; // 0.5%
  3763.                   else if (d2 > 100) numOfSteps = 100; // 1%
  3764.                   else if (d2 > 50) numOfSteps = 50; // 2%
  3765.                   else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  3766.                   else numOfSteps = 20;
  3767.                 }
  3768.                 if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  3769.                 if (numOfSteps < 5) numOfSteps = 5;
  3770.  
  3771.                 const rd = numOfSteps / 100.0;
  3772.  
  3773.                 ratio2 = Math.round(ratio2 * rd) / rd;
  3774.  
  3775.                 // ratio2 = Math.round(ratio2 * 5) / 5;
  3776.                 ratio2 = ratio2.toFixed(1);
  3777.                 v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  3778.  
  3779.                 if (yd.__style_last__ === v) return;
  3780.                 yd.__style_last__ = v;
  3781.                 // do not consider any delay here.
  3782.                 // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  3783.  
  3784.               }
  3785.             }
  3786.  
  3787.             HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  3788.  
  3789.  
  3790.           } else {
  3791.             HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  3792.           }
  3793.  
  3794.         };
  3795.  
  3796.  
  3797.         const fpTicker = (renderer) => {
  3798.           const cnt = renderer.inst || renderer;
  3799.           assertor(() => typeof (cnt || 0).is === 'string');
  3800.           assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  3801.           const container = (cnt.$ || 0).container;
  3802.           if (container) {
  3803.             assertor(() => (container || 0).nodeType === 1);
  3804.             assertor(() => typeof container.setAttribute === 'function');
  3805.             container.setAttribute = tickerContainerSetAttribute;
  3806.           } else {
  3807.             console.warn(`"container" does not exist in ${cnt.is}`);
  3808.           }
  3809.         };
  3810.  
  3811.  
  3812.         const tags = ["yt-live-chat-ticker-paid-message-item-renderer", "yt-live-chat-ticker-paid-sticker-item-renderer",
  3813.           "yt-live-chat-ticker-renderer", "yt-live-chat-ticker-sponsor-item-renderer"];
  3814.  
  3815.  
  3816.         Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  3817.  
  3818.           mightFirstCheckOnYtInit();
  3819.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  3820.           console.log("[Begin]");
  3821.  
  3822.           // << if ENABLE_VIDEO_PROGRESS_STATE_FIX >>
  3823.           let isMainVideoOngoing = null;
  3824.           let mainVideoLastProgress = null;
  3825.           // << end >>
  3826.  
  3827.           for (const tag of tags) {
  3828.             const dummy = document.createElement(tag);
  3829.  
  3830.             const cProto = getProto(dummy);
  3831.             if (!cProto || !cProto.attached) {
  3832.               console.warn(`proto.attached for ${tag} is unavailable.`);
  3833.               continue;
  3834.             }
  3835.  
  3836.             cProto.attached77 = cProto.attached;
  3837.  
  3838.             cProto.attached = function () {
  3839.               fpTicker(this.hostElement || this);
  3840.               return this.attached77();
  3841.             }
  3842.  
  3843.             for (const elm of document.getElementsByTagName(tag)) {
  3844.               if ((elm || elm.inst).isAttached === true) {
  3845.                 fpTicker(elm);
  3846.               }
  3847.             }
  3848.  
  3849.  
  3850.             let rafHackState = 0;
  3851.  
  3852.             let isTimingFunctionHackable = false;
  3853.  
  3854.             let urt = 0;
  3855.  
  3856.             if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  3857.  
  3858.               // console.log('startCountdown', typeof cProto.startCountdown)
  3859.               // console.log('updateTimeout', typeof cProto.updateTimeout)
  3860.               // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  3861.  
  3862.               isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  3863.  
  3864.             } else {
  3865.               console.log(`Skip Timing Function Modification for ${tag}`);
  3866.               continue;
  3867.             }
  3868.  
  3869.  
  3870.             if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  3871.  
  3872.               // cancelable - this.rafId < isAnimationPausedChanged >
  3873.               rafHackState = 1;
  3874.  
  3875.               if (isTimingFunctionHackable) {
  3876.                 rafHackState = 2;
  3877.  
  3878.               } else {
  3879.                 rafHackState = 4;
  3880.               }
  3881.  
  3882.             }
  3883.  
  3884.             const doAnimator = ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && typeof CSS === 'object' && typeof CSS.registerProperty === 'function';
  3885.  
  3886.             const doRAFHack = rafHackState === 2;
  3887.  
  3888.             cProto._throwOut = function () {
  3889.               this._r782 = 1;
  3890.               Promise.resolve().then(() => {
  3891.                 this.detached();
  3892.                 this.data = null;
  3893.                 if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  3894.                 if (this.__dataEnabled === true) this.__dataEnabled = false;
  3895.                 if (this.__dataReady === true) this.__dataReady = false;
  3896.                 const hm = this.hostElement || this;
  3897.                 if (hm.parentNode) hm.remove();
  3898.                 if (hm.firstChild) hm.textContent = '';
  3899.               }).catch(e => {
  3900.                 console.warn(e);
  3901.               });
  3902.             };
  3903.  
  3904.             // cProto._checkTickerBackgroundChanged = doAnimator ? function () {
  3905.             //   if (runTickerClassName === 'run-ticker') {
  3906.             //     const container = (this.$ || 0).container || 0;
  3907.             //     if (!container) return;
  3908.             //     container.classList.add('run-ticker-test');
  3909.             //     const evaluated = `${window.getComputedStyle(container).background}`;
  3910.             //     container.classList.remove('run-ticker-test');
  3911.             //     if (evaluated.indexOf('0.') < 4) {
  3912.             //       // not fulfilling
  3913.             //       // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3914.             //       runTickerClassName = 'run-ticker-forced';
  3915.             //       console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3916.             //         "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3917.             //         "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3918.             //       );
  3919.             //       console.warn(`%cWarning:\n\tYou might have added a userscript or extension that hacks ticker background too.\n\tYouTube Super Fast Chat will override it for you.`, 'color: #bada55');
  3920.             //       console.groupEnd();
  3921.             //     }
  3922.             //   }
  3923.             // } : null;
  3924.  
  3925.             cProto._makeAnimator = doAnimator ? function () {
  3926.               if (this._r782) return;
  3927.               // if (!this.isAttached) return;
  3928.               if (!this._runnerAE) {
  3929.                 const aElement = (this.$ || 0).container;
  3930.                 if (!aElement) return console.warn("this.$.container is undefined");
  3931.                 const da = this.data;
  3932.                 if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  3933.                 const c1 = this.colorFromDecimal(da.startBackgroundColor);
  3934.                 const c2 = this.colorFromDecimal(da.endBackgroundColor);
  3935.                 if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  3936.  
  3937.                 // if (!this.__tickerBackgroundInitialChecked__) {
  3938.                 //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  3939.                 //   console.log('__tickerBackgroundInitialChecked__')
  3940.                 //   this._checkTickerBackgroundChanged();
  3941.                 // }
  3942.  
  3943.                 aElement.style.setProperty('--ticker-c1', c1);
  3944.                 aElement.style.setProperty('--ticker-c2', c2);
  3945.                 aElement.classList.add(runTickerClassName);
  3946.                 const p = (this.countdownMs / this.countdownDurationMs) * 100;
  3947.                 // this._aeStartV = this.countdownMs;
  3948.                 // this._aeStartT = this.countdownDurationMs;
  3949.                 if (!(p >= 0 && p <= 100)) {
  3950.                   console.warn('incorrect time ratio', p);
  3951.                 } else {
  3952.                   /*
  3953.                   const u0 = p.toFixed(4) + '%';
  3954.                   this._runnerAE = animate.call(aElement,
  3955.                     [
  3956.                       { '--ticker-rtime': u0 },
  3957.                       { '--ticker-rtime': '0%' }
  3958.                     ]
  3959.                     ,
  3960.                     {
  3961.                       fill: "forwards",
  3962.                       duration: this.countdownMs,
  3963.                       easing: "linear"
  3964.                     }
  3965.                   );
  3966.                   */
  3967.  
  3968.                   let timingFn = 'linear';
  3969.  
  3970.                   const totalDuration = this.countdownDurationMs;
  3971.  
  3972.                   if (ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF === 'steps') {
  3973.  
  3974.                     // @ step timing [min. 0.2%]
  3975.                     let stepInterval = 0.2; // unit: %
  3976.                     if (totalDuration > 400000) stepInterval = 0.2;
  3977.                     else if (totalDuration > 200000) stepInterval = 0.5;
  3978.                     else if (totalDuration > 100000) stepInterval = 1;
  3979.                     else if (totalDuration > 50000) stepInterval = 2;
  3980.                     else if (totalDuration > 25000) stepInterval = 5;
  3981.                     else stepInterval = 5;
  3982.  
  3983.                     let numOfSteps = Math.round(100 / stepInterval);
  3984.  
  3985.                     if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  3986.                     if (numOfSteps < 5) numOfSteps = 5;
  3987.  
  3988.                     timingFn = `steps(${numOfSteps}, end)`;
  3989.  
  3990.                   }
  3991.  
  3992.  
  3993.  
  3994.                   this._runnerAE = animate.call(aElement,
  3995.                     [
  3996.                       { '--ticker-rtime': '100%' },
  3997.                       { '--ticker-rtime': '0%' }
  3998.                     ]
  3999.                     ,
  4000.                     {
  4001.                       fill: "forwards",
  4002.                       duration: totalDuration,
  4003.                       easing: timingFn
  4004.                     }
  4005.                   );
  4006.  
  4007.                   this._runnerAE.onfinish = () => {
  4008.                     if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4009.                       this._aeFinished();
  4010.                     }
  4011.                   }
  4012.  
  4013.                   let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4014.                   if (bq >= 0 && bq <= totalDuration) {
  4015.  
  4016.                     this._runnerAE.currentTime = bq
  4017.                   } else {
  4018.                     console.warn('Error on setting _runnerAE.currentTime!');
  4019.                   }
  4020.  
  4021.  
  4022.                   aeConstructor = this._runnerAE.constructor; // constructor is from iframe
  4023.                   return this._runnerAE;
  4024.                 }
  4025.               } else {
  4026.                 if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4027.                 // assume just time update
  4028.                 const ae = this._runnerAE;
  4029.                 if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4030.                 if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4031.                 let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4032.                 if (!(p >= 0 && p <= 100)) {
  4033.                   console.warn('incorrect time ratio', p);
  4034.                 } else {
  4035.                   // let u0 = p.toFixed(4) + '%'
  4036.                   /*
  4037.                   ae.effect.setKeyframes([
  4038.                     { '--ticker-rtime': u0 },
  4039.                     { '--ticker-rtime': '0%' }
  4040.                   ]);
  4041.                   ae.effect.updateTiming({ duration: this.countdownMs });
  4042.                   */
  4043.                   // ae.currentTime = 0;
  4044.  
  4045.  
  4046.  
  4047.                   let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4048.                   if (bq >= 0 && bq <= this.countdownDurationMs) {
  4049.  
  4050.                     this._runnerAE.currentTime = bq
  4051.                   } else {
  4052.                     console.warn('Error on setting _runnerAE.currentTime!');
  4053.                   }
  4054.  
  4055.  
  4056.                   ae.play();
  4057.                   return ae;
  4058.                 }
  4059.               }
  4060.             } : null;
  4061.  
  4062.             cProto._aeFinished = doAnimator ? function () {
  4063.  
  4064.               if (this._r782) return;
  4065.  
  4066.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4067.                 this._throwOut();
  4068.                 return;
  4069.               }
  4070.  
  4071.               if (doAnimator) {
  4072.                 if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4073.  
  4074.                 let lc = window.performance.now();
  4075.                 this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4076.                 if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4077.                 this.lastCountdownTimeMs = lc;
  4078.                 if (this.countdownMs > 10) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs); // just warning.
  4079.  
  4080.                 this.countdownMs = 0;
  4081.                 (this.lastCountdownTimeMs = null,
  4082.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4083.                     this.slideDown()));
  4084.  
  4085.  
  4086.               } else {
  4087.                 console.warn('unexpected issue')
  4088.               }
  4089.             } : null;
  4090.  
  4091.  
  4092.             if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  4093.  
  4094.               if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  4095.                 urt++;
  4096.                 assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  4097.                 cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  4098.                 cProto.handlePauseReplay = function () {
  4099.                   if (this.isAttached) {
  4100.  
  4101.                     if (pairForPauseResumeM === 0) {
  4102.                       pairForPauseResume++;
  4103.                       if (pairForPauseResume > 1e9) pairForPauseResume = pairForPauseResume % 1e4;
  4104.                     }
  4105.                     // console.log('handlePauseReplay');
  4106.                     // console.log('handlePauseReplay', pairForPauseResume);
  4107.                     const r = this.handlePauseReplay66.apply(this, arguments);
  4108.                     isMainVideoOngoing = false;
  4109.                     return r;
  4110.                   }
  4111.                 };
  4112.               } else {
  4113.                 console.log('Error for setting cProto.handlePauseReplay', tag)
  4114.               }
  4115.  
  4116.               if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  4117.                 urt++;
  4118.                 assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  4119.                 cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  4120.                 cProto.handleResumeReplay = function () {
  4121.                   if (this.isAttached) {
  4122.  
  4123.                     if (pairForPauseResumeM === 0) {
  4124.                       pairForPauseResume++;
  4125.                       if (pairForPauseResume > 1e9) pairForPauseResume = pairForPauseResume % 1e4;
  4126.                     }
  4127.                     // console.log('handleResumeReplay');
  4128.                     // console.log('handleResumeReplay', pairForPauseResume);
  4129.                     const r = this.handleResumeReplay66.apply(this, arguments);
  4130.                     isMainVideoOngoing = true;
  4131.                     return r;
  4132.  
  4133.                   }
  4134.                 };
  4135.               } else {
  4136.                 console.log('Error for setting cProto.handleResumeReplay', tag)
  4137.               }
  4138.  
  4139.               if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  4140.                 urt++;
  4141.                 assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  4142.                 cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  4143.                 cProto.handleReplayProgress = function (a) {
  4144.                   if (this.isAttached) {
  4145.                     const p = mainVideoLastProgress;
  4146.                     mainVideoLastProgress = a;
  4147.                     if (isMainVideoOngoing === false) { // ignore isMainVideoOngoing === null ?
  4148.                       const d = a - p;
  4149.                       if (d > 0 && d < 0.28) isMainVideoOngoing = true; // timeupdate
  4150.                       // 0.28 is due to
  4151.                       //    - most browsers will fire the timeupdate event between 4 to 60 times per second
  4152.                       //    - i.e. timeupdate roughly every 15-250 milliseconds
  4153.                     }
  4154.                     let promiseResult = null;
  4155.                     if (this.isAnimationPaused) {
  4156.                       // unstable state for isMainVideoOngoing; delay required
  4157.                       // all the tickers' handleReplayProgress are executed in the same microtask
  4158.                       // execute after result returned
  4159.                       const lz1 = pairForPauseResume;
  4160.                       Promise.resolve().then(() => {
  4161.                         return promiseResult
  4162.                       }).then(() => {
  4163.  
  4164.  
  4165.                         if (isMainVideoOngoing === true && this.isAnimationPaused) {
  4166.                           const lz2 = pairForPauseResume;
  4167.                           // console.log( 10044000, lz1, lz2 , mainVideoLastProgress - a, isMainVideoOngoing  )
  4168.                           if (lz1 === lz2 && mainVideoLastProgress !== null && mainVideoLastProgress - a >= -1e-5) this.isAnimationPaused = false; // trigger isAnimationPausedChanged
  4169.                         }
  4170.  
  4171.                       });
  4172.                     }
  4173.  
  4174.                     const lq1 = pairForPauseResume;
  4175.                     promiseResult = Promise.resolve().then(() => {
  4176.                       const lq2 = pairForPauseResume;
  4177.  
  4178.                       if (lq1 === lq2) {
  4179.                         this.handleReplayProgress66(a);
  4180.                       }
  4181.  
  4182.  
  4183.                     })
  4184.  
  4185.                   }
  4186.                 };
  4187.               } else {
  4188.                 console.log('Error for setting cProto.handleReplayProgress', tag)
  4189.               }
  4190.  
  4191.             }
  4192.  
  4193.             const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  4194.  
  4195.             cProto.startCountdown = (doRAFHack || doAnimator) ? function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4196.  
  4197.               // a.durationSec [s] => countdownMs [ms]
  4198.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4199.               // lastCountdownTimeMs => raf ongoing
  4200.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4201.  
  4202.               if (this._r782) return;
  4203.  
  4204.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4205.                 this._throwOut();
  4206.                 return;
  4207.               }
  4208.  
  4209.               if (doAnimator) {
  4210.                 b = void 0 === b ? 0 : b;
  4211.                 if (void 0 !== a) {
  4212.                   this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4213.                   this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4214.                   if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4215.                     this.lastCountdownTimeMs = performance.now()
  4216.                     this.rafId = 1
  4217.                     if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4218.                     this.detlaSincePausedSecs = 0;
  4219.                     const ae = this._makeAnimator();
  4220.                     if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4221.  
  4222.                     // console.log(539, isMainVideoOngoing)
  4223.                     if (this.isAnimationPaused === void 0 && ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED && isMainVideoOngoing === false && mainVideoLastProgress !== null) {
  4224.                       // << This is mainly for [PlayBack Replay] backwards >>
  4225.                       // fix the case when the main video is paused but due to seeking the tickers are added
  4226.                       // play first then pause immediately to allow the visual effect of initial state
  4227.                       // don't forget to set the "playerProgressSec"
  4228.                       // otherwise when it resumes from paused state, the detlaSincePausedSecs will be huge
  4229.                       this.playerProgressSec = mainVideoLastProgress; // save the progress first
  4230.                       this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4231.                       this.detlaSincePausedSecs = 0;
  4232.                       this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4233.                     }
  4234.                   }
  4235.                 }
  4236.               } else {
  4237.                 // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4238.                 if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4239.                 b = void 0 === b ? 0 : b;
  4240.                 void 0 !== a && (this.countdownMs = 1E3 * a,
  4241.                   this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4242.                   this.ratio = 1,
  4243.                   this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = performance.now(),
  4244.                     this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4245.               }
  4246.  
  4247.             } : cProto.startCountdown;
  4248.  
  4249.             cProto.updateTimeout = (doRAFHack || doAnimator) ? function (a) {
  4250.  
  4251.               if (this._r782) return;
  4252.  
  4253.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4254.                 this._throwOut();
  4255.                 return;
  4256.               }
  4257.  
  4258.               if (doAnimator) {
  4259.                 if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4260.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4261.                 if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4262.                 if (this.isAttached && this.countdownMs) {
  4263.                   this.lastCountdownTimeMs = a
  4264.                   const ae = this._makeAnimator(); // request raf
  4265.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4266.                 } else {
  4267.                   (this.lastCountdownTimeMs = null,
  4268.                     this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4269.                       this.slideDown()));
  4270.                 }
  4271.               } else {
  4272.                 // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4273.                 if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4274.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4275.                 this.ratio = this.countdownMs / this.countdownDurationMs;
  4276.                 this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4277.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = null,
  4278.                     this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4279.                       this.slideDown()))
  4280.               }
  4281.  
  4282.             } : cProto.updateTimeout;
  4283.  
  4284.             // let ez = 0;
  4285.             cProto.isAnimationPausedChanged = (doRAFHack || doAnimator) ? function (a, b) {
  4286.  
  4287.               if (this._r782) return;
  4288.  
  4289.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4290.                 this._throwOut();
  4291.                 return;
  4292.               }
  4293.               let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4294.               this._forceNoDetlaSincePausedSecs783 = 0;
  4295.  
  4296.               Promise.resolve().then(() => {
  4297.  
  4298.                 if (doAnimator) {
  4299.  
  4300.                   const playState = (this._runnerAE || 0).playState;
  4301.                   if (a && playState === 'running') {
  4302.  
  4303.                   } else if (!a && playState !== 'running' && b) {
  4304.  
  4305.                   } else {
  4306.                     return;
  4307.                   }
  4308.                 }
  4309.  
  4310.                 // if (Math.abs(this.detlaSincePausedSecs) < 0.01) this.detlaSincePausedSecs = 0;
  4311.                 if (doAnimator) {
  4312.                   const pu = () => { // running -> pause
  4313.                     this._runnerAE.pause()
  4314.                     let lc = window.performance.now();
  4315.                     this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4316.                     if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4317.                     this.lastCountdownTimeMs = lc;
  4318.                   };
  4319.                   const wa = () => { // pause -> running
  4320.                     if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4321.                     a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4322.                     this.detlaSincePausedSecs = 0;
  4323.                     this.updateTimeout(a);
  4324.                     this.lastCountdownTimeMs = window.performance.now();
  4325.                   };
  4326.                   a ? (this._runnerAE && pu()) : (!a && b && wa());
  4327.                 } else {
  4328.                   // ez++;
  4329.                   // if(ez> 1e9) ez=9;
  4330.                   if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4331.                   a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4332.                     this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4333.                       this.detlaSincePausedSecs = 0),
  4334.                     this.boundUpdateTimeout37_(a),
  4335.                     this.lastCountdownTimeMs = window.performance.now())
  4336.                 }
  4337.  
  4338.               }).catch(e => {
  4339.                 console.log(e);
  4340.               });
  4341.  
  4342.  
  4343.  
  4344.             } : cProto.isAnimationPausedChanged;
  4345.  
  4346.  
  4347.             if (doAnimator) {
  4348.  
  4349.               assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  4350.  
  4351.               let dummyValueForStyleReturn = null;
  4352.  
  4353.               cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  4354.               cProto.computeContainerStyle = function (a, b) {
  4355.  
  4356.                 if (this._r782) return;
  4357.  
  4358.                 if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4359.                   this._throwOut();
  4360.                   return;
  4361.                 }
  4362.  
  4363.                 const fullDurationSec = a ? a.fullDurationSec : 0;
  4364.                 if (fullDurationSec > 0 && typeof b === 'number') {
  4365.  
  4366.                   // usually zero
  4367.  
  4368.                   // let currentDuationSrc = b * fullDurationSec; // a.durationSec
  4369.  
  4370.                   // console.log(231, fullDurationSec, b, currentDuationSrc, a.durationSec);
  4371.  
  4372.                   /*
  4373.                   if (a.mdsz && typeof a.mdst) return a.mdst;
  4374.                   a.mdsz = 1;
  4375.  
  4376.  
  4377.  
  4378.                   let c1 = this.colorFromDecimal(a.startBackgroundColor);
  4379.                   let c2 = this.colorFromDecimal(a.endBackgroundColor);
  4380.  
  4381.                   let ratio = currentDuationSrc / fullDurationSec;
  4382.  
  4383.                   let m = (ratio * 100).toFixed(1);
  4384.  
  4385.  
  4386.                   let s = `--background:linear-gradient(90deg, ${c1},${c1} ${m}%,${c2} ${m}%,${c2});`
  4387.                   let ro = {
  4388.                     "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4389.                     "implementsGoogStringTypedString": true
  4390.                   };
  4391.  
  4392.                   ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4393.  
  4394.                   a.mdst = s;
  4395.  
  4396.                   return ro;
  4397.                   */
  4398.                 }
  4399.  
  4400.  
  4401.  
  4402.                 // return this.computeContainerStyle66.apply(this, arguments);
  4403.  
  4404.                 if (dummyValueForStyleReturn === null) {
  4405.  
  4406.                   let s = `--nx:82;`
  4407.                   let ro = {
  4408.                     "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4409.                     "implementsGoogStringTypedString": true
  4410.                   };
  4411.  
  4412.                   ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4413.  
  4414.  
  4415.                   dummyValueForStyleReturn = ro;
  4416.  
  4417.  
  4418.                 }
  4419.  
  4420.  
  4421.                 return dummyValueForStyleReturn;
  4422.  
  4423.  
  4424.               }
  4425.  
  4426.             }
  4427.  
  4428.             if (ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF) {
  4429.               console.log('ATTEMPT_TO_REPLACE_TICKER_EASING_TO_KEF', tag, doAnimator ? 'OK' : 'NG');
  4430.             }
  4431.  
  4432.             if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  4433.               console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  4434.             }
  4435.  
  4436.           }
  4437.           console.log("[End]");
  4438.           console.groupEnd();
  4439.  
  4440.  
  4441.         });
  4442.  
  4443.  
  4444.         if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  4445.  
  4446.  
  4447.           customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  4448.  
  4449.             mightFirstCheckOnYtInit();
  4450.             groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  4451.             console.log("[Begin]");
  4452.             (() => {
  4453.  
  4454.               const tag = "yt-live-chat-message-input-renderer"
  4455.               const dummy = document.createElement(tag);
  4456.  
  4457.               const cProto = getProto(dummy);
  4458.               if (!cProto || !cProto.attached) {
  4459.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  4460.                 return;
  4461.               }
  4462.  
  4463.               let doHack = false;
  4464.               if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  4465.  
  4466.                 // not cancellable
  4467.                 console.log('handleTimeout', typeof cProto.handleTimeout)
  4468.                 console.log('updateTimeout', typeof cProto.updateTimeout)
  4469.  
  4470.                 doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  4471.  
  4472.               }
  4473.  
  4474.               if (doHack) {
  4475.  
  4476.                 cProto.handleTimeout = function (a) {
  4477.                   console.log('cProto.handleTimeout', tag)
  4478.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4479.                   this.timeoutDurationMs = this.timeoutMs = a;
  4480.                   this.countdownRatio = 1;
  4481.                   0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  4482.                 };
  4483.                 cProto.updateTimeout = function (a) {
  4484.                   console.log('cProto.updateTimeout', tag)
  4485.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4486.                   this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  4487.                     this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  4488.                   this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  4489.                     rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  4490.                 };
  4491.  
  4492.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  4493.               } else {
  4494.  
  4495.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  4496.               }
  4497.  
  4498.             })();
  4499.  
  4500.             console.log("[End]");
  4501.  
  4502.             console.groupEnd();
  4503.  
  4504.  
  4505.           })
  4506.  
  4507.  
  4508.         }
  4509.  
  4510.         if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  4511.  
  4512.  
  4513.           customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  4514.  
  4515.             mightFirstCheckOnYtInit();
  4516.             groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  4517.             console.log("[Begin]");
  4518.             (() => {
  4519.  
  4520.               const tag = "yt-emoji-picker-renderer"
  4521.               const dummy = document.createElement(tag);
  4522.  
  4523.               const cProto = getProto(dummy);
  4524.               if (!cProto || !cProto.attached) {
  4525.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  4526.                 return;
  4527.               }
  4528.  
  4529.               let doHack = false;
  4530.               if (typeof cProto.animateScroll_ === 'function') {
  4531.  
  4532.                 // not cancellable
  4533.                 console.log('animateScroll_', typeof cProto.animateScroll_)
  4534.  
  4535.                 doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  4536.  
  4537.               }
  4538.  
  4539.               if (doHack) {
  4540.  
  4541.                 const querySelector = HTMLElement.prototype.querySelector;
  4542.                 const U = (element) => ({
  4543.                   querySelector: (selector) => querySelector.call(element, selector)
  4544.                 });
  4545.  
  4546.                 cProto.animateScroll_ = function (a) {
  4547.                   // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  4548.                   if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  4549.                   this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  4550.                   a -= this.lastAnimationTime_;
  4551.                   200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  4552.                     rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  4553.                       this.animationEnd_ = this.animationStart_ = null,
  4554.                       this.lastAnimationTime_ = 0);
  4555.                   this.updateButtons_()
  4556.                 }
  4557.  
  4558.                 console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  4559.               } else {
  4560.  
  4561.                 console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  4562.               }
  4563.  
  4564.             })();
  4565.  
  4566.             console.log("[End]");
  4567.  
  4568.             console.groupEnd();
  4569.           });
  4570.         }
  4571.  
  4572.         if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  4573.  
  4574.  
  4575.           customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  4576.  
  4577.             mightFirstCheckOnYtInit();
  4578.             groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  4579.             console.log("[Begin]");
  4580.             (() => {
  4581.  
  4582.               const tag = "yt-live-chat-docked-message"
  4583.               const dummy = document.createElement(tag);
  4584.  
  4585.               const cProto = getProto(dummy);
  4586.               if (!cProto || !cProto.attached) {
  4587.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  4588.                 return;
  4589.               }
  4590.  
  4591.               let doHack = false;
  4592.               if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  4593.  
  4594.                 // cancelable - this.intersectRAF <detached>
  4595.                 // yt-live-chat-docked-message
  4596.                 // boundCheckIntersections <-> checkIntersections
  4597.                 // onDockableMessagesChanged
  4598.                 //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  4599.  
  4600.                 console.log('detached', typeof cProto.detached)
  4601.                 console.log('checkIntersections', typeof cProto.checkIntersections)
  4602.                 console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  4603.  
  4604.                 doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  4605.  
  4606.               }
  4607.  
  4608.               if (doHack) {
  4609.  
  4610.                 cProto.checkIntersections = function () {
  4611.                   // console.log('cProto.checkIntersections', tag)
  4612.                   if (this.dockableMessages.length) {
  4613.                     this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  4614.                     let a = this.dockableMessages[0]
  4615.                       , b = this.hostElement.getBoundingClientRect();
  4616.                     a = a.getBoundingClientRect();
  4617.                     let c = a.top - b.top
  4618.                       , d = 8 >= c;
  4619.                     c = 8 >= c - this.hostElement.clientHeight;
  4620.                     if (d) {
  4621.                       let e;
  4622.                       for (; d;) {
  4623.                         e = this.dockableMessages.shift();
  4624.                         d = this.dockableMessages[0];
  4625.                         if (!d)
  4626.                           break;
  4627.                         d = d.getBoundingClientRect();
  4628.                         c = d.top - b.top;
  4629.                         let f = 8 >= c;
  4630.                         if (8 >= c - a.height)
  4631.                           if (f)
  4632.                             a = d;
  4633.                           else
  4634.                             return;
  4635.                         d = f
  4636.                       }
  4637.                       this.dock(e)
  4638.                     } else
  4639.                       c && this.dockedItem && this.clear()
  4640.                   } else
  4641.                     this.intersectRAF = 0
  4642.                 }
  4643.  
  4644.                 cProto.onDockableMessagesChanged = function () {
  4645.                   // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  4646.                   this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  4647.                 }
  4648.  
  4649.                 cProto.detached = function () {
  4650.                   this.intersectRAF && rafHub.cancel(this.intersectRAF)
  4651.                 }
  4652.  
  4653.                 console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  4654.               } else {
  4655.  
  4656.                 console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  4657.               }
  4658.  
  4659.             })();
  4660.  
  4661.             console.log("[End]");
  4662.  
  4663.             console.groupEnd();
  4664.  
  4665.           });
  4666.  
  4667.         }
  4668.  
  4669.         if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  4670.  
  4671.  
  4672.           customElements.whenDefined("yt-img-shadow").then(() => {
  4673.  
  4674.             mightFirstCheckOnYtInit();
  4675.             groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  4676.             console.log("[Begin]");
  4677.             (() => {
  4678.  
  4679.               const tag = "yt-img-shadow"
  4680.               const dummy = document.createElement(tag);
  4681.  
  4682.               const cProto = getProto(dummy);
  4683.               if (!cProto || !cProto.attached) {
  4684.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  4685.                 return;
  4686.               }
  4687.  
  4688.               if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  4689.  
  4690.                 cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  4691.                 cProto.thumbnailChanged_ = function (a) {
  4692.  
  4693.                   if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  4694.                   if (!this.oldThumbnail_ && !this.thumbnail) return;
  4695.  
  4696.                   return this.thumbnailChanged66_.apply(this, arguments)
  4697.  
  4698.                 }
  4699.                 console.log("cProto.thumbnailChanged_ - OK");
  4700.  
  4701.               } else {
  4702.                 console.log("cProto.thumbnailChanged_ - NG");
  4703.  
  4704.               }
  4705.               if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  4706.  
  4707.                 cProto.setSrc66_ = cProto.setSrc_;
  4708.                 cProto.setSrc_ = function (a) {
  4709.                   if ((((this || 0).$ || 0).img || 0).src === a) return;
  4710.                   return this.setSrc66_.apply(this, arguments)
  4711.                 }
  4712.  
  4713.                 console.log("cProto.setSrc_ - OK");
  4714.               } else {
  4715.  
  4716.                 console.log("cProto.setSrc_ - NG");
  4717.               }
  4718.  
  4719.             })();
  4720.  
  4721.             console.log("[End]");
  4722.  
  4723.             console.groupEnd();
  4724.  
  4725.           });
  4726.  
  4727.         }
  4728.  
  4729.         if(FIX_THUMBNAIL_DATACHANGED){
  4730.  
  4731.  
  4732.  
  4733.           customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  4734.  
  4735.             mightFirstCheckOnYtInit();
  4736.             groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  4737.             console.log("[Begin]");
  4738.             (() => {
  4739.  
  4740.               const tag = "yt-live-chat-author-badge-renderer"
  4741.               const dummy = document.createElement(tag);
  4742.  
  4743.               const cProto = getProto(dummy);
  4744.               if (!cProto || !cProto.attached) {
  4745.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  4746.                 return;
  4747.               }
  4748.  
  4749.  
  4750.               if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  4751.  
  4752.  
  4753.  
  4754.                 cProto.dataChanged86 = cProto.dataChanged;
  4755.                 cProto.dataChanged = function(a){
  4756.  
  4757. /*
  4758.  
  4759.         for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  4760.             b.removeChild(b.firstChild);
  4761.         if (a)
  4762.             if (a.icon) {
  4763.                 var c = document.createElement("yt-icon");
  4764.                 "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  4765.                 c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  4766.                 b.appendChild(c)
  4767.             } else if (a.customThumbnail) {
  4768.                 c = document.createElement("img");
  4769.                 var d;
  4770.                 (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  4771.                 b.appendChild(c),
  4772.                 c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  4773.             }
  4774.  
  4775.             */
  4776.  
  4777.                   const image = ((this||0).$||0).image
  4778.                   if (image && a && image.firstElementChild) {
  4779.                     let exisiting = image.firstElementChild;
  4780.                     if (exisiting === image.lastElementChild) {
  4781.  
  4782.  
  4783.                       if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  4784.  
  4785.                         let c = exisiting;
  4786.                         if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  4787.                           if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  4788.                           if (c.defaultToFilled !== true) c.defaultToFilled = true;
  4789.                         } else {
  4790.                           let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  4791.                           if (c.icon !== p) c.icon = p;
  4792.                           if (c.defaultToFilled !== false) c.defaultToFilled = false;
  4793.                         }
  4794.                         return;
  4795.  
  4796.  
  4797.                       } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  4798.  
  4799.                         let c = exisiting;
  4800.                         if(a.customThumbnail.thumbnails.map(e=>e.url).includes(c.src)){
  4801.  
  4802.                           c.setAttribute("alt", this.hostElement.ariaLabel || "");
  4803.                           return;
  4804.                         }
  4805.                         /*
  4806.  
  4807.                         var d;
  4808.                         (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  4809.  
  4810.  
  4811.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  4812.                           */
  4813.                       }
  4814.  
  4815.  
  4816.                     }
  4817.                   }
  4818.                   return this.dataChanged86.apply(this,arguments)
  4819.  
  4820.                 }
  4821.                 console.log("cProto.dataChanged - OK");
  4822.  
  4823.               }else{
  4824.                 assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  4825.                 console.log("cProto.dataChanged - NG");
  4826.  
  4827.               }
  4828.  
  4829.             })();
  4830.  
  4831.             console.log("[End]");
  4832.  
  4833.             console.groupEnd();
  4834.  
  4835.           });
  4836.  
  4837.  
  4838.         }
  4839.  
  4840.  
  4841.       }
  4842.  
  4843.       promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  4844.  
  4845.  
  4846.     })();
  4847.  
  4848.  
  4849.   });
  4850.  
  4851. })({ IntersectionObserver });