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YouTube EXPERIMENT_FLAGS Tamer

Adjust EXPERIMENT_FLAGS

  1. // ==UserScript==
  2. // @name        YouTube EXPERIMENT_FLAGS Tamer
  3. // @namespace   UserScripts
  4. // @match       https://www.youtube.com/*
  5. // @version     1.6.12
  6. // @license     MIT
  7. // @author      CY Fung
  8. // @icon        https://raw.githubusercontent.com/cyfung1031/userscript-supports/main/icons/yt-engine.png
  9. // @description Adjust EXPERIMENT_FLAGS
  10. // @grant       none
  11. // @unwrap
  12. // @run-at      document-start
  13. // @allFrames   true
  14. // @inject-into page
  15. // @require     https://update.greatest.deepsurf.us/scripts/475632/1361351/ytConfigHacks.js
  16. // ==/UserScript==
  17.  
  18. (() => {
  19.  
  20.   // Purpose 1: Remove Obsolete Flags
  21.   // Purpose 2: Remove Flags bring no visual difference
  22.   // Purpose 3: Enable Flags bring performance boost
  23.  
  24.   const DISABLE_CINEMATICS = false; // standard design
  25.   const NO_SerializedExperiment = false;
  26.   const KEEP_PLAYER_QUALITY_STICKY = true; // see https://greatest.deepsurf.us/scripts/471033/
  27.   const DISABLE_serializedExperimentIds = true;
  28.   const DISABLE_serializedExperimentFlags = true;
  29.   const IGNORE_VIDEO_SOURCE_RELATED = true;
  30.   const NO_REFRESH = true;
  31.   const ENABLE_MINOR_CHAT_FEATURE_UPGRADE = true;
  32.   const ENABLE_EMOJI_PICKER_NEW_STYLE = false;
  33.   const ENABLE_BADGE_STYLE = false;
  34.   const NO_DESKTOP_DELAY_PLAYER_RESIZING = false;
  35.   const NO_ANIMATED_LIKE = false;
  36.   const KEEP_MIDDLEWAVE = true;
  37.   const NO_CINEMATIC_LIGHTING_LABEL = false; // set true to show "Ambient Mode" label instead of "Cinematic lighting" Label
  38.   const KEEP_unified_player = true; // for YouTube Audio Only
  39.  
  40.   const SET_POLYMER_FLAGS = true;
  41.   const FLAG_STRATEGY_01 = true; // ignore ads related flags
  42.  
  43.   const FLAG_STRATEGY_02 = true; // ignore player related flags
  44.  
  45.   const FLAG_STRATEGY_03 = true; // ignore adblock related flags
  46.  
  47.   const FLAG_STRATEGY_20240413 = true; // ignore adblock related flags
  48.  
  49.   const FLAG_STRATEGY_20240503 = true; // AD FLAG
  50.  
  51.   const NO_DEBUG_FLAG = true;
  52.  
  53.   const FLAG_SKIP_CHAT_BUTTON = true;
  54.  
  55.   const ALLOW_FLAGS_202404 = true;
  56.  
  57.   const DISABLE_FLAGS_SHADYDOM_FREE = true;
  58.  
  59.   const ENABLE_EXPERIMENT_FLAGS_MAINTAIN_STABLE_LIST = {
  60.     defaultValue: true, // performance boost
  61.     useExternal: () => typeof localStorage.EXPERIMENT_FLAGS_MAINTAIN_STABLE_LIST !== 'undefined',
  62.     externalValue: () => (+localStorage.EXPERIMENT_FLAGS_MAINTAIN_STABLE_LIST ? true : false)
  63.   };
  64.   const ENABLE_EXPERIMENT_FLAGS_MAINTAIN_REUSE_COMPONENTS = {
  65.     defaultValue: true, // not sure
  66.     useExternal: () => typeof localStorage.EXPERIMENT_FLAGS_MAINTAIN_REUSE_COMPONENTS !== 'undefined',
  67.     externalValue: () => (+localStorage.EXPERIMENT_FLAGS_MAINTAIN_REUSE_COMPONENTS ? true : false)
  68.   };
  69.   const ENABLE_EXPERIMENT_FLAGS_DEFER_DETACH = {
  70.     defaultValue: true, // not sure
  71.     useExternal: () => typeof localStorage.ENABLE_EXPERIMENT_FLAGS_DEFER_DETACH !== 'undefined',
  72.     externalValue: () => (+localStorage.ENABLE_EXPERIMENT_FLAGS_DEFER_DETACH ? true : false)
  73.   };
  74.  
  75.   const ENABLE_EXPERIMENT_FLAGS_NO_AUTOPLAY_TOGGLE = {
  76.     defaultValue: false, // true to remove autoplay toggle button
  77.     useExternal: () => typeof localStorage.ENABLE_EXPERIMENT_FLAGS_NO_AUTOPLAY_TOGGLE !== 'undefined',
  78.     externalValue: () => (+localStorage.ENABLE_EXPERIMENT_FLAGS_NO_AUTOPLAY_TOGGLE ? true : false)
  79.   };
  80.  
  81.   const ALLOW_ALL_LIVE_CHATS_FLAGS = false;
  82.  
  83.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  84.  
  85.   const COMMENTS_NO_DELAY = true;
  86.  
  87.   const SPACEBAR_CONTROL = -1; // 0 - only scroll down; 1 - global pause; 2 - speed control pause;
  88.   // -1 = by pass
  89.  
  90.   const ALLOW_THEATER_PLAYER_SHORTCUT_KEY_T = true;
  91.  
  92.   const USE_byPassConditionAnalyzer = false;
  93.  
  94.   // ----------------------------- FOR FINDING OUT THE NEW FLAG -------------------------------
  95.   const byPassConditionAnalyzer = (() => {
  96.  
  97.     // This is to find the flags disabled by this script would cause your issue.
  98.     // Goal: find the flag name to whitelist
  99.  
  100.     const testFn = (key, isVideoPlayerParams) => {
  101.  
  102.       const kl = key.length;
  103.       const kl7 = kl % 7;
  104.       const kl5 = kl % 5;
  105.       const kl3 = kl % 3;
  106.       const kl2 = kl % 2;
  107.  
  108.  
  109.       // ture for by pass
  110.       const byConditions = [
  111.         !kl2,
  112.         kl3 <= 1,
  113.         kl5 >= 3,
  114.         kl7 >= 4,
  115.         kl >= 20,
  116.         kl <= 40,
  117.         [
  118.           "clean_up_manual_attribution_header",
  119.           "empty_attributed_string_killswitch",
  120.           "enable_profile_cards_cairo_updates",
  121.           "enable_teaser_framework_web_client",
  122.           "enable_tectonic_ad_ux_for_halftime",
  123.           "enable_web_shorts_save_audio_pivot",
  124.           "kevlar_clear_duplicate_pref_cookie",
  125.           "kevlar_disable_background_prefetch",
  126.           "kevlar_transcript_engagement_panel",
  127.           "kevlar_watch_flexy_theater_manager",
  128.           "mdx_load_cast_api_bootstrap_script",
  129.           "web_collab_playlist_thumbnail_size",
  130.           "web_fix_back_button_player_loading",
  131.           "web_fix_dynamic_metadata_diacritic",
  132.           "web_kevlar_enable_adaptive_signals",
  133.           "web_move_autoplay_video_under_chip",
  134.           "web_player_small_hbp_settings_menu",
  135.           "web_rendererstamper_event_listener",
  136.           "web_shorts_skip_loading_same_index",
  137.           "web_shorts_suggested_action_no_bvm",
  138.           "web_use_updated_icon_for_oac_badge",
  139.           "wiz_prevent_watched_double_logging"
  140.         ]
  141.       ];
  142.  
  143.       // const byConditions = [
  144.       //   !kl2,
  145.       //   kl3 <= 1,
  146.       //   kl5 >= 3,
  147.       //   kl7 >= 4,
  148.       //   kl >= 20,
  149.       //   kl <= 40,
  150.       //   [
  151.       //     "clean_up_manual_attribution_header",
  152.       //     "empty_attributed_string_killswitch",
  153.       //     "enable_profile_cards_cairo_updates",
  154.       //     "enable_teaser_framework_web_client",
  155.       //     "enable_tectonic_ad_ux_for_halftime",
  156.       //     "enable_web_shorts_save_audio_pivot",
  157.       //     "kevlar_clear_duplicate_pref_cookie",
  158.       //     "kevlar_disable_background_prefetch",
  159.       //     "kevlar_transcript_engagement_panel",
  160.       //     "kevlar_watch_flexy_theater_manager",
  161.       //     "mdx_load_cast_api_bootstrap_script",
  162.       //     "web_collab_playlist_thumbnail_size",
  163.       //     "web_fix_back_button_player_loading",
  164.       //     "web_fix_dynamic_metadata_diacritic",
  165.       //     "web_kevlar_enable_adaptive_signals",
  166.       //     "web_move_autoplay_video_under_chip",
  167.       //     "web_player_small_hbp_settings_menu",
  168.       //     "web_rendererstamper_event_listener",
  169.       //     "web_shorts_skip_loading_same_index",
  170.       //     "web_shorts_suggested_action_no_bvm",
  171.       //     "web_use_updated_icon_for_oac_badge",
  172.       //     "wiz_prevent_watched_double_logging"
  173.       //   ]
  174.       // ];
  175.  
  176.       return byConditions;
  177.  
  178.     };
  179.  
  180.     let u = 0;
  181.     let cache1 = new Set();
  182.     let cache2 = new Set();
  183.  
  184.     const disp = () => {
  185.       const q = cache1.size < 50 ? [...cache1] : [];
  186.       const a = [];
  187.       const b = [];
  188.       for (const m of q) {
  189.         if (cache2.has(m)) b.push(m); else a.push(m);
  190.       }
  191.       console.log('[yt-flags-tamer]', 'filtered keys {eflags}', a.length, a);
  192.       console.log('[yt-flags-tamer]', 'filtered keys {vflags}', b.length, b);
  193.     }
  194.  
  195.     const res = {
  196.  
  197.       testFn_: (key, isVideoPlayerParams) => {
  198.  
  199.         if (!u) {
  200.           u = 1;
  201.           u = setTimeout(disp, 400);
  202.         }
  203.         let q = testFn(key, isVideoPlayerParams).every(e => {
  204.  
  205.           if (typeof e === 'object' && Symbol.iterator in Object(e)) {
  206.             return e.includes(key);
  207.           } else if (typeof e === 'string') {
  208.             return e.includes(key);
  209.           } else {
  210.             return !!e
  211.           }
  212.  
  213.         });
  214.         if (q) {
  215.  
  216.           cache1.add(key);
  217.           return true;
  218.  
  219.         }
  220.         return false;
  221.  
  222.  
  223.       }
  224.  
  225.     }
  226.  
  227.  
  228.     return res;
  229.  
  230.  
  231.  
  232.  
  233.  
  234.  
  235.   })();
  236.   // ----------------------------- FOR FINDING OUT THE NEW FLAG -------------------------------
  237.  
  238.   // TBC
  239.   // kevlar_tuner_should_always_use_device_pixel_ratio
  240.   // kevlar_tuner_should_clamp_device_pixel_ratio
  241.   // kevlar_tuner_clamp_device_pixel_ratio
  242.   // kevlar_tuner_should_use_thumbnail_factor
  243.   // kevlar_tuner_thumbnail_factor
  244.   // kevlar_tuner_min_thumbnail_quality
  245.   // kevlar_tuner_max_thumbnail_quality
  246.  
  247.   // kevlar_tuner_should_test_visibility_time_between_jobs
  248.   // kevlar_tuner_visibility_time_between_jobs_ms
  249.  
  250.   // kevlar_tuner_default_comments_delay
  251.   // kevlar_tuner_run_default_comments_delay
  252.  
  253.   // cinematic feature is no longer an experimental feature.
  254.   // It has been officially implemented.
  255.   // To disable cinematics, the user shall use other userscripts or just turn off the option in the video options.
  256.  
  257.   const getSettingValue = (fm) => fm.useExternal() ? fm.externalValue() : fm.defaultValue;
  258.  
  259.   const win = this instanceof Window ? this : window;
  260.  
  261.   // Create a unique key for the script and check if it is already running
  262.   const hkey_script = 'jmimcvowrlzl';
  263.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  264.   win[hkey_script] = true;
  265.  
  266.   /** @type {globalThis.PromiseConstructor} */
  267.   const Promise = ((async () => { })()).constructor;
  268.  
  269.   let isMainWindow = false;
  270.   const mzFlagDetected1 = new Set();
  271.   const mzFlagDetected2 = new Set();
  272.   let zPlayerKevlar = false;
  273.   try {
  274.     isMainWindow = window.document === window.top.document
  275.   } catch (e) { }
  276.  
  277.   const fOperAccept = Symbol();
  278.   const fOperReject = Symbol();
  279.  
  280.   // h5 flags
  281.   const fOperAcceptList = new Set([
  282.  
  283.     ...(NO_CINEMATIC_LIGHTING_LABEL ? [
  284.       'web_player_use_cinematic_label', // fallback
  285.       'web_player_use_cinematic_label_0', // fallback
  286.       'web_player_use_cinematic_label_1', // fallback
  287.       'web_player_use_cinematic_label_2',
  288.       'web_player_use_cinematic_label_3', // fallback
  289.     ] : []),
  290.  
  291.     ...(FLAG_STRATEGY_03 ? [
  292.       // do it with your separate script please
  293.       'ab_pl_man', // https://www.uedbox.com/post/69238/
  294.       'ab_fk_sk_cl', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  295.       'ab_det_apb_b',
  296.       'ab_det_el_h',
  297.       'ab_det_fet_wr',
  298.       'ab_det_fet_wr_en',
  299.       'ab_det_gen_re',
  300.       'web_enable_ab_rsp_cl',
  301.       'enable_ab_rp_int',
  302.       'enable_ab_report_on_errorscreen',
  303.       'enable_pl_r_si_fa',
  304.       'ab_det_sc_inj_enf',
  305.       'service_worker_enabled', // https://gist.github.com/BrokenGabe/51d55a11c2090d9402e40f12a6ece275
  306.       'ab_deg_unex_thr', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  307.       'ab_net_tp_e', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  308.       'ad_net_pb_ab', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  309.       'ab_mis_log_err', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  310.       'ad_net_pb_pbp',
  311.  
  312.       'ab_det_sc_inj',
  313.       'ab_det_sc_inj_val',
  314.       'disable_enf_isd',
  315.       'ks_det_gpbl',
  316.       'ks_get_o_pp',
  317.       'ab_deg_unex_thr',
  318.       'enable_pl_r_si_fa',
  319.       'debug_sk_em_precheck',
  320.  
  321.     ] : []),
  322.  
  323.  
  324.  
  325.     ...(FLAG_STRATEGY_01 ? [
  326.       'web_player_defer_modules',
  327.       'html5_defer_modules_on_ads_only',
  328.       'web_player_defer_ad',
  329.       'disable_defer_admodule_on_advertiser_video',
  330.       'html5_onesie_defer_content_loader_ms',
  331.       'html5_defer_fetch_att_ms',
  332.       'embeds_web_enable_defer_loading_remote_js',
  333.     ] : []),
  334.  
  335.     ...(KEEP_MIDDLEWAVE ? [
  336.       'web_player_entities_middleware'
  337.     ] : []),
  338.  
  339.  
  340.     'web_settings_menu_icons',
  341.     // see https://github.com/cyfung1031/userscript-supports/issues/27
  342.     // see https://greatest.deepsurf.us/scripts/470428/discussions/216363
  343.  
  344.  
  345.     // 'disable_new_pause_state3',
  346.     // 'enable_cast_on_music_web',
  347.     // 'gcf_config_store_enabled',
  348.     // 'gel_queue_timeout_max_ms',
  349.     // 'network_polling_interval',
  350.     'player_doubletap_to_seek',
  351.     // 'polymer_bad_build_labels',
  352.     // 'skip_invalid_ytcsi_ticks',
  353.     // 'use_player_cue_range_set',
  354.     // 'woffle_used_state_report',
  355.  
  356.   ]);
  357.  
  358.   const fOperMapFn = (o) => new Map(Object.entries({
  359.     // 1 true 2 false 3
  360.  
  361.     ...((o.no_autoplay_toggle !== true) ? {
  362.  
  363.       // 'player_allow_autonav_after_playlist',
  364.       'web_player_autonav_toggle_always_listen': 1,
  365.       // 'web_player_offline_playlist_auto_refresh',
  366.  
  367.       // 'allow_live_autoplay',
  368.       // 'allow_poltergust_autoplay',
  369.       // 'autoplay_time',
  370.       // 'autoplay_time_for_fullscreen',
  371.       // 'autoplay_time_for_music_content',
  372.       'client_respect_autoplay_switch_button_renderer': 1,
  373.       // 'embeds_enable_muted_autoplay',
  374.       // 'embeds_web_enable_autoplay_not_supported_logging_fix',
  375.       // 'embeds_web_enable_log_splay_as_autoplay',
  376.       // 'embeds_web_enable_mobile_autoplay',
  377.       // 'html5_autoplay_default_quality_cap',
  378.       // 'mweb_muted_autoplay_animation',
  379.  
  380.       // 'html5_player_autonav_logging',
  381.       // 'web_player_always_enable_auto_translation',
  382.       // 'web_player_autonav_empty_suggestions_fix',
  383.       // 'web_player_autonav_use_server_provided_state',
  384.       'web_player_decouple_autonav': 1,
  385.       'web_player_move_autonav_toggle': 1,
  386.  
  387.     } : {}),
  388.  
  389.     ...(IGNORE_VIDEO_SOURCE_RELATED ? {
  390.  
  391.       'html5_live_use_alternate_bandwidth_window_sizes': 1,
  392.       'html5_live_ultra_low_latency_bandwidth_window': 1,
  393.       'html5_live_low_latency_bandwidth_window': 1,
  394.       'html5_live_normal_latency_bandwidth_window': 1,
  395.       // 'html5_skip_slow_ad_delay_ms': 1,
  396.       'html5_player_preload_ad_fix': 1,
  397.       // if (key.includes('_ad_') || key.includes('_ads_')) {
  398.       'html5_ssdai_adfetch_dynamic_timeout_ms': 2,
  399.       'html5_log_ssdai_fallback_ads': 2,
  400.       'html5_deprecate_adservice': 2,
  401.       // !key.includes('deprecat')) keep = true;
  402.  
  403.  
  404.       //  if (key.startsWith('enable_h5_player_ad_block_')) keep = false;
  405.       'fix_h5_toggle_button_a11y': 1,
  406.       'h5_companion_enable_adcpn_macro_substitution_for_click_pings': 2,
  407.       'h5_enable_generic_error_logging_event': 2,
  408.       'h5_enable_unified_csi_preroll': 1,
  409.       'h5_reset_cache_and_filter_before_update_masthead': 1,
  410.       'web_player_enable_premium_hbr_in_h5_api': 1,
  411.       // !key.includes('deprecat')) keep = true;
  412.  
  413.     } : {}),
  414.  
  415.  
  416.     ...(KEEP_PLAYER_QUALITY_STICKY ? {
  417.  
  418.       html5_onesie_sticky_server_side: 2,
  419.       html5_perf_cap_override_sticky: 1,
  420.       html5_ustreamer_cap_override_sticky: 1,
  421.       html5_exponential_memory_for_sticky: 1
  422.  
  423.     } : {}),
  424.  
  425.  
  426.     'html5_streaming_xhr_time_based_consolidation_ms': 1,
  427.     'html5_bypass_contention_secs': 1,
  428.  
  429.     'vp9_drm_live': 1,
  430.     'html5_log_rebuffer_reason': 2,
  431.     'html5_enable_audio_track_log': 2,
  432.  
  433.  
  434.     'html5_safari_desktop_eme_min_version': 1,
  435.  
  436.     'html5_disable_av1': 1,
  437.     'html5_disable_av1_hdr': 1,
  438.     'html5_disable_hfr_when_vp9_encrypted_2k4k_unsupported': 1,
  439.     'html5_account_onesie_format_selection_during_format_filter': 1,
  440.     'html5_prefer_hbr_vp9_over_av1': 1,
  441.  
  442.     ...(!DISABLE_CINEMATICS ? {
  443.       'web_cinematic_watch_settings': 1
  444.     } : {}),
  445.  
  446.     'html5_apply_start_time_within_ads_for_ssdai_transitions': 2,
  447.     'html5_enable_ads_client_monitoring_log_tv': 2,
  448.     'html5_ignore_interruptive_ads_for_server_stitched': 1,
  449.  
  450.     'html5_no_video_to_ad_on_preroll': 1,
  451.     'html5_no_video_to_ad_on_preroll_reset': 1,
  452.     'html5_rebase_video_to_ad_timeline': 1,
  453.     'html5_report_slow_ads_as_error': 1,
  454.  
  455.     'html5_default_ad_gain': 1, // just keep
  456.     'html5_min_startup_buffered_ad_media_duration_secs': 1, // just keep
  457.  
  458.     'html5_skip_slow_ad_delay_ms': 7,
  459.     'check_navigator_accuracy_timeout_ms': 8,
  460.     'html5_ad_timeout_ms': 8,
  461.     'html5_ads_preroll_lock_timeout_delay_ms': 9,
  462.     'html5_slow_start_timeout_delay_ms': 8,
  463.     'variable_buffer_timeout_ms': 9,
  464.  
  465.     'h5_expr_b9Nkc': 1,
  466.  
  467.   }));
  468.  
  469.   var fOperMap;
  470.  
  471.   const valur = (value, k) => {
  472.     if (+value === 0) value = k;
  473.     else if (+value > +k) value = k;
  474.     return value;
  475.   }
  476.  
  477.   function fOper(key, value) {
  478.  
  479.     if (fOperAcceptList.has(key)) return fOperAccept;
  480.     if (USE_byPassConditionAnalyzer && byPassConditionAnalyzer.testFn_(key, true)) return fOperAccept;
  481.     if (key.length === 22 || key.length === 27 || key.length === 32) {
  482.  
  483.       if (SPACEBAR_CONTROL < 0) {
  484.  
  485.         if (key === 'disable_space_scroll_fix' || key === 'global_spacebar_pause' || key === 'web_speedmaster_spacebar_control') {
  486.           return fOperAccept;
  487.         }
  488.         if (key.includes('speedmaster')) return fOperAccept;
  489.       }
  490.  
  491.       if (SPACEBAR_CONTROL === 2 && key.includes('speedmaster')) {
  492.         return fOperAccept;
  493.       }
  494.  
  495.     }
  496.     // if(key.length < 30)continue;
  497.     // const kl = key.length;
  498.  
  499.     let keep = false;
  500.     let nv = undefined;
  501.  
  502.     const no_autoplay_toggle = ENABLE_EXPERIMENT_FLAGS_NO_AUTOPLAY_TOGGLE.currentValue;
  503.  
  504.     fOperMap = fOperMap || fOperMapFn({ no_autoplay_toggle });
  505.  
  506.     const fm1 = fOperMap.get(key);
  507.  
  508.     switch (fm1) {
  509.       case 1:
  510.         keep = true;
  511.         break;
  512.       case 2:
  513.         keep = false;
  514.         break;
  515.       case 7:
  516.         const kv = typeof value === 'string' && +value > 2;
  517.         keep = kv;
  518.         if (kv && +value > 4) nv = '4';
  519.         break;
  520.       case 8:
  521.         nv = valur(value, '4');
  522.         keep = true;
  523.         break;
  524.       case 9:
  525.         keep = false;
  526.         break;
  527.       default:
  528.  
  529.         if (FLAG_STRATEGY_20240413 && key.includes('network')) keep = true;
  530.         else if (FLAG_STRATEGY_20240413 && key.includes('less')) keep = true;
  531.         else if (FLAG_STRATEGY_20240413 && key.includes('latency')) keep = true;
  532.         else if (FLAG_STRATEGY_20240413 && key.includes('slow')) keep = true;
  533.         else if (FLAG_STRATEGY_20240413 && key.includes('steam')) keep = true;
  534.         else if (key.includes('deprecat')) {
  535.           keep = false;
  536.         } else if (IGNORE_VIDEO_SOURCE_RELATED && key.includes('html5_') && !key.includes('_ad_') && !key.includes('_ads_')) {
  537.           keep = true;
  538.         } else if (IGNORE_VIDEO_SOURCE_RELATED && key.includes('h5_')) {
  539.           keep = true;
  540.         } else if (key.includes('_timeout') && typeof value === 'string') {
  541.           if (+value > 3000) nv = '3000';
  542.           keep = true;
  543.         } else if (KEEP_PLAYER_QUALITY_STICKY && key.includes('_sticky')) {
  544.           keep = true;
  545.         } else if (key.startsWith('h5_expr_')) {
  546.           // by userscript
  547.           keep = true;
  548.         }
  549.     }
  550.  
  551.     if (!keep) {
  552.       return fOperReject;
  553.       // vRes.delete(key);
  554.     } else if (nv !== undefined && nv !== value) {
  555.       return nv;
  556.       // vRes.set(key, nv)
  557.     } else {
  558.       return fOperAccept;
  559.     }
  560.  
  561.   }
  562.   function deSerialized(str, fOper) {
  563.  
  564.     const map = new Map();
  565.     let start = 0;
  566.  
  567.     while (start < str.length) {
  568.       // Find the next '&' or the end of the string
  569.       const nextAmpersand = str.indexOf('&', start);
  570.       const end = nextAmpersand === -1 ? str.length : nextAmpersand;
  571.  
  572.       // Extract the key-value pair
  573.       const equalsSign = str.indexOf('=', start);
  574.       if (equalsSign !== -1 && equalsSign < end) {
  575.         const key = str.substring(start, equalsSign);
  576.         const value = str.substring(equalsSign + 1, end);
  577.  
  578.         const r = fOper(key, value);
  579.         if (typeof r !== 'symbol') {
  580.           map.set(key, r)
  581.         } else if (r === fOperAccept) {
  582.           map.set(key, value);
  583.         }
  584.  
  585.       }
  586.  
  587.       // Move to the next key-value pair
  588.       start = end + 1;
  589.     }
  590.  
  591.     map.toString = function () {
  592.       const res = new Array(map.size);
  593.       let i = 0;
  594.       this.forEach((value, key) => {
  595.         res[i++] = `${key}=${value}`;
  596.       });
  597.       return res.join('&');
  598.     }
  599.     return map;
  600.   }
  601.  
  602.   function fixSerializedExperiment(conf) {
  603.  
  604.     const supportAV1 = window.MediaSource.isTypeSupported('video/webm; codecs=av01.0.05M.08');
  605.     const supportVP9 = window.MediaSource.isTypeSupported('video/webm; codecs=vp09.01.20.08.01.01.01.01.00');
  606.  
  607.     if (DISABLE_serializedExperimentIds && typeof conf.serializedExperimentIds === 'string') {
  608.       let ids = conf.serializedExperimentIds.split(',');
  609.       let newIds = [];
  610.       for (const id of ids) {
  611.         let keep = false;
  612.         if (keep) {
  613.           newIds.push(id);
  614.         }
  615.       }
  616.       conf.serializedExperimentIds = newIds.join(',');
  617.     }
  618.  
  619.     const mez = (mRes) => {
  620.  
  621.       mRes.set('html5_disable_low_pipeline', 'false');
  622.       mRes.set('html5_min_startup_buffered_ad_media_duration_secs', '0')
  623.  
  624.       if (supportAV1 === false && localStorage['yt-player-av1-pref'] === '-1') {
  625.  
  626.         mRes.set('html5_disable_av1', 'true');
  627.         mRes.set('html5_disable_av1_hdr', 'true');
  628.         mRes.set('html5_prefer_hbr_vp9_over_av1', 'true');
  629.  
  630.       } else if (supportAV1 === true && supportVP9 === true && localStorage['yt-player-av1-pref'] === '8192') {
  631.  
  632.         mRes.set('html5_disable_av1', 'false');
  633.         mRes.set('html5_disable_av1_hdr', 'false');
  634.         mRes.set('html5_prefer_hbr_vp9_over_av1', 'false');
  635.       }
  636.  
  637.  
  638.       // html5_perf_cap_override_sticky = true;
  639.       // html5_perserve_av1_perf_cap = true;
  640.  
  641.  
  642.       mRes.set('html5_enable_server_format_filter', 'true')
  643.       mRes.set('html5_use_ump', 'true')
  644.  
  645.       mRes.set('html5_live_defrag_only_h264_playbacks', 'true')
  646.       mRes.set('html5_live_defrag_only_h264_formats', 'true')
  647.  
  648.       mRes.set('html5_disable_protected_hdr', 'false')
  649.       mRes.set('html5_disable_vp9_encrypted', 'false')
  650.       mRes.set('html5_ignore_h264_framerate_cap', 'true')
  651.  
  652.       mRes.set('html5_allow_asmjs', 'true')
  653.       // mRes.set('html5_defer_modules_on_ads_only', 'true')
  654.       mRes.set('html5_use_drm_retry', 'true')
  655.       mRes.set('html5_delta_encode_fexp', 'true')
  656.       mRes.set('html5_only_send_cas_health_pings', 'true')
  657.  
  658.       mRes.set('html5_modify_caption_vss_logging', 'true')
  659.       // mRes.set('html5_allow_zero_duration_ads_on_timeline', 'true')
  660.       mRes.set('html5_reset_daistate_on_audio_codec_change', 'true')
  661.       mRes.set('html5_enable_safari_fairplay', 'true')
  662.  
  663.       mRes.set('html5_safari_fairplay_ignore_hdcp', 'true')
  664.  
  665.       mRes.set('html5_enable_vp9_fairplay', 'true')
  666.       mRes.set('html5_eme_loader_sync', 'true')
  667.  
  668.       mRes.set('html5_enable_same_language_id_matching', 'true');
  669.       mRes.set('html5_enable_new_hvc_enc', 'true')
  670.       mRes.set('html5_enable_ssap', 'true')
  671.       mRes.set('html5_enable_short_gapless', 'true')
  672.       mRes.set('html5_enable_aac51', 'true')
  673.       mRes.set('html5_enable_ssap_entity_id', 'true')
  674.  
  675.       mRes.set('html5_high_res_logging_always', 'true')
  676.       mRes.set('html5_local_playsinline', 'true')
  677.       mRes.set('html5_disable_media_element_loop_on_tv', 'true')
  678.       mRes.set('html5_native_audio_track_switching', 'true')
  679.  
  680.       mRes.set('html5_format_hybridization', 'true')
  681.       mRes.set('html5_disable_encrypted_vp9_live_non_2k_4k', 'false')
  682.  
  683.       // mRes.set('html5_default_ad_gain', 'false')
  684.       mRes.set('html5_use_sabr_requests_for_debugging', 'false')
  685.       // mRes.set('html5_enable_sabr_live_streaming_xhr', 'true')
  686.       // mRes.set('html5_sabr_live_ultra_low_latency', 'true')
  687.  
  688.       // mRes.set('html5_sabr_live_low_latency', 'true')
  689.       // mRes.set('html5_sabr_live', 'true') // sabr_live for audio only
  690.       mRes.set('html5_sabr_post_live', 'true')
  691.       mRes.set('html5_sabr_premiere', 'true')
  692.  
  693.       // mRes.set('html5_enable_sabr_live_streaming_xhr', 'true')
  694.       // mRes.set('html5_enable_sabr_live_non_streaming_xhr', 'true')
  695.  
  696.       mRes.set('html5_enable_subsegment_readahead_v3', 'true')
  697.       mRes.set('html5_ultra_low_latency_subsegment_readahead', 'true')
  698.       mRes.set('html5_disable_move_pssh_to_moov', 'true')
  699.  
  700.       mRes.set('html5_modern_vp9_mime_type', 'true')
  701.  
  702.     }
  703.  
  704.     if (DISABLE_serializedExperimentFlags && typeof conf.serializedExperimentFlags === 'string') {
  705.       const fg = conf.serializedExperimentFlags;
  706.  
  707.       const vRes = deSerialized(fg, fOper);
  708.  
  709.       mez(vRes);
  710.  
  711.       const kg = vRes.toString();
  712.  
  713.       conf.serializedExperimentFlags = kg;
  714.  
  715.     }
  716.  
  717.   }
  718.  
  719.  
  720.   let brc = 1000;
  721.  
  722.   if (typeof AbortSignal !== 'undefined') {
  723.     document.addEventListener('yt-action', function () {
  724.       if (brc > 8) looperFn();
  725.       brc = 0;
  726.     }, { capture: true, passive: true, once: true });
  727.   }
  728.  
  729.  
  730.   // yt flags
  731.   const cachedSetFn = (o) => {
  732.  
  733.     const { use_maintain_stable_list, use_maintain_reuse_components, use_defer_detach } = o;
  734.  
  735.     const BY_PASS = [
  736.  
  737.       'enable_profile_cards_on_comments',
  738.  
  739.       ... (SPACEBAR_CONTROL < 0 ? [
  740.         'disable_space_scroll_fix',
  741.         'global_spacebar_pause',
  742.         'web_speedmaster_spacebar_control'
  743.       ] : []),
  744.  
  745.       ...(ALLOW_FLAGS_202404 ? [
  746.  
  747.         'suppress_error_204_logging',
  748.         'use_request_time_ms_header',
  749.  
  750.         'remove_masthead_channel_banner_on_refresh',
  751.         'action_companion_center_align_description',
  752.         'disable_child_node_auto_formatted_strings',
  753.         // 'enable_native_bridge_view_saved_playables',
  754.         'enable_shadydom_free_scoped_query_methods',
  755.         // 'enable_skippable_ads_for_unplugged_ad_pod',
  756.         'enable_sparkles_web_clickable_description',
  757.         'enable_window_constrained_buy_flow_dialog',
  758.         // 'html5_enable_ads_client_monitoring_log_tv',
  759.         'is_part_of_any_user_engagement_experiment',
  760.         // 'kevlar_chapters_list_view_seek_by_chapter',
  761.         // 'kevlar_enable_shorts_prefetch_in_sequence',
  762.         // 'kevlar_resolve_command_for_confirm_dialog',
  763.         // 'kevlar_shorts_seedless_retry_initial_load',
  764.         // 'live_chat_enable_send_button_in_slow_mode',
  765.         // 'live_chat_web_use_emoji_manager_singleton',
  766.         'remove_masthead_channel_banner_on_refresh',
  767.         // 'web_deprecate_service_ajax_map_dependency',
  768.         'web_modern_player_settings_quality_bottom',
  769.         // 'web_player_always_enable_auto_translation',
  770.         // 'web_player_enable_cultural_moment_overlay',
  771.         // 'ytidb_fetch_datasync_ids_for_data_cleanup',
  772.         'kevlar_tuner_should_test_reuse_components',
  773.  
  774.         'web_player_ve_conversion_fixes_for_channel_info',
  775.         'web_watch_updated_metadata_server_initial_delay',
  776.         // 'trigger_impression_pings_on_view_search_desktop',
  777.  
  778.         'defer_menus',
  779.  
  780.       ] : []),
  781.  
  782.       ...(FLAG_SKIP_CHAT_BUTTON ? [
  783.         'live_chat_overflow_hide_chat',
  784.         'web_watch_chat_hide_button_killswitch',
  785.       ] : []),
  786.  
  787.  
  788.       ...(KEEP_unified_player ? [
  789.         'kevlar_unified_player',
  790.         'kevlar_non_watch_unified_player',
  791.       ] : []),
  792.  
  793.  
  794.  
  795.       ...(FLAG_STRATEGY_03 ? [
  796.         // do it with your separate script please
  797.         'ab_pl_man', // https://www.uedbox.com/post/69238/
  798.         'ab_fk_sk_cl', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  799.         'ab_det_apb_b',
  800.         'ab_det_el_h',
  801.         'ab_det_fet_wr',
  802.         'ab_det_fet_wr_en',
  803.         'ab_det_gen_re',
  804.         'web_enable_ab_rsp_cl',
  805.         'enable_ab_rp_int',
  806.         'enable_ab_report_on_errorscreen',
  807.         'enable_pl_r_si_fa',
  808.         'ab_det_sc_inj_enf',
  809.         'service_worker_enabled', // https://gist.github.com/BrokenGabe/51d55a11c2090d9402e40f12a6ece275
  810.         'ab_deg_unex_thr', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  811.         'ab_net_tp_e', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  812.         'ad_net_pb_ab', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  813.         'ab_mis_log_err', // https://www.youtube.com/s/desktop/28b0985e/jsbin/desktop_polymer.vflset/desktop_polymer.js
  814.  
  815.         'ab_det_sc_inj',
  816.         'ab_det_sc_inj_val',
  817.         'disable_enf_isd',
  818.         'ks_det_gpbl',
  819.         'ks_get_o_pp',
  820.         'ab_deg_unex_thr',
  821.         'enable_pl_r_si_fa',
  822.         'debug_sk_em_precheck',
  823.  
  824.       ] : []),
  825.  
  826.  
  827.       ...(FLAG_STRATEGY_02 ? [
  828.         // do it with your separate script please
  829.         'kevlar_client_enable_shorts_player_bootstrap',
  830.         'kevlar_early_popup_close',
  831.         'kevlar_hide_pp_url_param',
  832.         'kevlar_touch_gesture_ves',
  833.         'player_doubletap_to_seek',
  834.         'shorts_controller_retrieve_seedless_sequence',
  835.         'shorts_overlay_reshuffle',
  836.       ] : []),
  837.  
  838.  
  839.       ...(SET_POLYMER_FLAGS ? [
  840.         'polymer_enable_mdx_queue',
  841.         'polymer_on_demand_shady_dom',
  842.       ] : []),
  843.  
  844.       ...(FLAG_STRATEGY_01 ? [
  845.         'web_player_defer_modules',
  846.         'html5_defer_modules_on_ads_only',
  847.         'web_player_defer_ad',
  848.         'disable_defer_admodule_on_advertiser_video',
  849.         'html5_onesie_defer_content_loader_ms',
  850.         'html5_defer_fetch_att_ms',
  851.         'embeds_web_enable_defer_loading_remote_js',
  852.       ] : []),
  853.  
  854.       ...(KEEP_MIDDLEWAVE ? [
  855.         'web_player_entities_middleware'
  856.       ] : []),
  857.  
  858.       'desktop_keyboard_capture_keydown_killswitch', // TBC
  859.       'kevlar_autofocus_menu_on_keyboard_nav', // TBC
  860.       'kevlar_keyboard_button_focus', // TBC
  861.       'kevlar_macro_markers_keyboard_shortcut', // required
  862.  
  863.       // 'kevlar_appbehavior_attach_startup_tasks'
  864.       // 'kevlar_clear_non_displayable_url_params'
  865.       'kevlar_command_handler_formatted_string', // see https://github.com/cyfung1031/userscript-supports/issues/20
  866.       'kevlar_miniplayer_queue_user_activation',
  867.       'kevlar_player_watch_endpoint_navigation',
  868.       // 'kevlar_watch_focus_on_engagement_panels'
  869.  
  870.       // playlist related flags
  871.       "shorts_in_playlists_web",
  872.       "live_chat_over_playlist",
  873.       "web_amsterdam_playlists",
  874.       "browse_next_continuations_migration_playlist",
  875.       "desktop_add_to_playlist_renderer_dialog_popup",
  876.       "enable_horizontal_list_renderer_scroll_based_on_items_visibility",
  877.       "enable_pass_sdc_get_accounts_list",
  878.       "enable_programmed_playlist_color_sample",
  879.       "enable_programmed_playlist_redesign",
  880.       "enable_section_list_scroll_to_item_section_web",
  881.       "gda_enable_playlist_download",
  882.       "include_autoplay_count_in_playlists",
  883.       "kevlar_chapters_list_view_seek_by_chapter",
  884.       "kevlar_enable_editable_playlists",
  885.       "kevlar_enable_reorderable_playlists",
  886.       "kevlar_fix_playlist_continuation",
  887.       "kevlar_hide_playlist_playback_status",
  888.       "kevlar_lazy_list_resume_for_autofill",
  889.       "kevlar_no_autoscroll_on_playlist_hover",
  890.       "kevlar_passive_event_listeners",
  891.       "kevlar_player_playlist_use_local_index",
  892.       "kevlar_playlist_drag_handles",
  893.       "kevlar_playlist_use_x_close_button",
  894.       "kevlar_rendererstamper_event_listener",
  895.       "kevlar_should_maintain_stable_list",
  896.       "kevlar_show_playlist_dl_btn",
  897.       "music_on_main_open_playlist_recommended_videos_in_miniplayer",
  898.       "player_allow_autonav_after_playlist",
  899.       "player_enable_playback_playlist_change",
  900.       "web_amsterdam_post_mvp_playlists",
  901.  
  902.       // not sure
  903.       // "check_user_lact_at_prompt_shown_time_on_web",
  904.       "clear_user_partitioned_ls",
  905.       "desktop_notification_high_priority_ignore_push",
  906.       "desktop_notification_set_title_bar",
  907.       "enable_first_user_action_csi_logging",
  908.       "enable_get_account_switcher_endpoint_on_webfe",
  909.       "enable_handles_account_menu_switcher",
  910.       "enable_names_handles_account_switcher", // TBC
  911.       "enable_pass_sdc_get_accounts_list",
  912.       "enable_server_stitched_dai",
  913.       "enable_yt_ata_iframe_authuser",
  914.       // "fill_single_video_with_notify_to_lasr",
  915.       "html5_server_stitched_dai_group",
  916.       // "is_part_of_any_user_engagement_experiment",
  917.       "kevlar_miniplayer_queue_user_activation",
  918.       // "rich_grid_resize_observer",
  919.       // "rich_grid_resize_observer_only",
  920.  
  921.       'desktop_add_to_playlist_renderer_dialog_popup',
  922.  
  923.       ...(!DISABLE_CINEMATICS ? [
  924.  
  925.         'kevlar_measure_ambient_mode_idle',
  926.         'kevlar_watch_cinematics_invisible',
  927.         'web_cinematic_theater_mode',
  928.         'web_cinematic_fullscreen',
  929.  
  930.         'enable_cinematic_blur_desktop_loading',
  931.         'kevlar_watch_cinematics',
  932.         'web_cinematic_masthead',
  933.         'web_watch_cinematics_preferred_reduced_motion_default_disabled'
  934.  
  935.       ] : []),
  936.  
  937.  
  938.  
  939.       'kevlar_rendererstamper_event_listener', // https://github.com/cyfung1031/userscript-supports/issues/11
  940.  
  941.  
  942.  
  943.  
  944.       'live_chat_web_enable_command_handler',
  945.       'live_chat_channel_activity',
  946.       'live_chat_web_input_update',
  947.  
  948.       'live_chat_web_enable_command_handler',
  949.  
  950.       ...(ALLOW_ALL_LIVE_CHATS_FLAGS ? [
  951.  
  952.         'live_chat_banner_expansion_fix',
  953.         'live_chat_enable_mod_view',
  954.         'live_chat_enable_qna_banner_overflow_menu_actions',
  955.         'live_chat_enable_qna_channel',
  956.         'live_chat_enable_send_button_in_slow_mode',
  957.         'live_chat_filter_emoji_suggestions',
  958.         'live_chat_increased_min_height',
  959.         'live_chat_over_playlist',
  960.         'live_chat_web_use_emoji_manager_singleton',
  961.         'live_chat_whole_message_clickable',
  962.  
  963.         'live_chat_emoji_picker_toggle_state',
  964.         'live_chat_enable_command_handler_resolver_map',
  965.         'live_chat_enable_controller_extraction',
  966.         'live_chat_enable_rta_manager',
  967.         'live_chat_require_space_for_autocomplete_emoji',
  968.         'live_chat_unclickable_message',
  969.  
  970.       ] : []),
  971.  
  972.       'kevlar_rendererstamper_event_listener', // https://github.com/cyfung1031/userscript-supports/issues/11
  973.  
  974.       // kevlar_enable_up_arrow - no use
  975.       // kevlar_help_use_locale - might use
  976.       // kevlar_refresh_gesture - might use
  977.       // kevlar_smart_downloads - might use
  978.       // kevlar_thumbnail_fluid
  979.       'kevlar_ytb_live_badges',
  980.  
  981.       ...(!use_maintain_stable_list ? [
  982.         'kevlar_tuner_should_test_maintain_stable_list',
  983.         'kevlar_should_maintain_stable_list',
  984.         'kevlar_tuner_should_maintain_stable_list', // fallback
  985.  
  986.  
  987.       ] : []),
  988.  
  989.  
  990.       ...(!use_maintain_reuse_components ? [
  991.  
  992.         'kevlar_tuner_should_test_reuse_components',
  993.         'kevlar_tuner_should_reuse_components',
  994.         'kevlar_should_reuse_components' // fallback
  995.  
  996.       ] : []),
  997.  
  998.  
  999.       'kevlar_system_icons',
  1000.  
  1001.       // 'kevlar_prefetch_data_augments_network_data' continue;
  1002.  
  1003.       // home page / watch page icons
  1004.       'kevlar_three_dot_ink',
  1005.       'kevlar_use_wil_icons',
  1006.       'kevlar_home_skeleton',
  1007.  
  1008.       'kevlar_fluid_touch_scroll',
  1009.       'kevlar_watch_color_update',
  1010.       'kevlar_use_vimio_behavior', // home page - channel icon
  1011.  
  1012.       // collapsed meta; no teaser, use latest collapsed meta design
  1013.       'kevlar_structured_description_content_inline',
  1014.       'kevlar_watch_metadata_refresh',
  1015.  
  1016.       'kevlar_watch_js_panel_height', // affect Tabview Youtube
  1017.  
  1018.       'shorts_desktop_watch_while_p2',
  1019.       'web_button_rework',
  1020.       'web_darker_dark_theme_live_chat',
  1021.       'web_darker_dark_theme', // it also affect cinemtaics
  1022.  
  1023.       // modern menu
  1024.       'web_button_rework_with_live',
  1025.       'web_fix_fine_scrubbing_drag',
  1026.  
  1027.       // full screen -buggy
  1028.       'external_fullscreen',
  1029.  
  1030.       // minimize menu
  1031.       'web_modern_buttons',
  1032.       'web_modern_dialogs',
  1033.  
  1034.       // Tabview Youtube - multiline transcript
  1035.       'enable_mixed_direction_formatted_strings',
  1036.  
  1037.       // Notification Menu
  1038.       "kevlar_service_command_check",
  1039.  
  1040.       // Live ChatRoom Visibility
  1041.       "live_chat_cow_visibility_set_up",
  1042.  
  1043.       'enable_unknown_lact_fix_on_html5',
  1044.  
  1045.  
  1046.  
  1047.  
  1048.       'live_chat_chunk_across_update_interval',
  1049.  
  1050.       'enable_native_live_chat_on_kevlar',
  1051.  
  1052.       'live_chat_author_name_color_usernames',
  1053.       'live_chat_seed_color_usernames',
  1054.       'live_chat_colored_usernames',
  1055.       'live_chat_simple_color_usernames',
  1056.       'web_button_rework_with_live',
  1057.       'live_chat_hide_avatars',
  1058.       'live_chat_enable_qna_replay',
  1059.       'live_chat_aggregation',
  1060.       'live_chat_web_use_emoji_manager_singleton',
  1061.       'enable_docked_chat_messages',
  1062.       'live_chat_taller_emoji_picker',
  1063.       'live_chat_emoji_picker_restyle',
  1064.       'live_chat_emoji_picker_restyle_remain_open_on_send',
  1065.       'live_chat_web_input_update',
  1066.       'live_chat_enable_send_button_in_slow_mode',
  1067.  
  1068.       'kevlar_watch_metadata_refresh_no_old_primary_data',
  1069.       // 'kevlar_watch_metadata_refresh_no_old_secondary_data', // for Tabview Youtube
  1070.       'enable_web_cosmetic_refresh_hashtag_page',
  1071.       'kevlar_watch_metadata_refresh_description_lines',
  1072.  
  1073.  
  1074.  
  1075.  
  1076.       'enable_service_ajax_csn',
  1077.  
  1078.       'kevlar_use_vimio_behavior',
  1079.  
  1080.       'web_use_cache_for_image_fallback',
  1081.       'kevlar_woffle_fallback_image',
  1082.       'yt_img_shadow_trigger_show_on_visible',
  1083.       'kevlar_thumbnail_bg',
  1084.       'web_rounded_thumbnails',
  1085.  
  1086.  
  1087.  
  1088.       'kevlar_rendererstamper_event_listener',
  1089.  
  1090.       'dialog_behavior_no_tap_killswitch',
  1091.  
  1092.       'handle_service_request_actions',
  1093.  
  1094.       'live_chat_whole_message_clickable',
  1095.  
  1096.       'live_chat_require_space_for_autocomplete_emoji',
  1097.  
  1098.       'kevlar_keyboard_button_focus',
  1099.  
  1100.       'live_chat_emoji_picker_toggle_state',
  1101.       'super_sticker_emoji_picker_category_button_icon_filled',
  1102.       'enable_super_chat_buy_flow_revamp_web',
  1103.  
  1104.  
  1105.       'web_modern_buttons',
  1106.  
  1107.  
  1108.       'web_modern_dialogs',
  1109.       'live_chat_disable_chat_feed_animation',
  1110.       'live_chat_overflow_hide_chat',
  1111.       'web_darker_dark_theme_live_chat',
  1112.       'live_chat_channel_activity',
  1113.       'live_chat_emoji_picker_restyle_remain_open_on_click_to_input_area',
  1114.       'live_chat_top_chat_sampling_enabled',
  1115.  
  1116.       'live_chat_enable_mod_view',
  1117.       'live_chat_web_enable_command_handler_action_handling',
  1118.       'web_modern_dialogs',
  1119.       'web_modern_dialog_layout',
  1120.       'web_modern_typography',
  1121.  
  1122.       'kevlar_disable_component_resizing_support',
  1123.       'web_rounded_thumbnails',
  1124.       'enable_quiz_desktop_animation',
  1125.       'kevlar_thumbnail_fluid',
  1126.       'web_enable_playlist_video_lockup_equalizer',
  1127.       'web_modern_collections_v2',
  1128.       'animated_live_badge_icon',
  1129.       'use_color_palettes_modern_collections_v2',
  1130.       'web_amsterdam_post_mvp_playlists',
  1131.       'enable_desktop_search_bigger_thumbs',
  1132.       'web_animated_actions',
  1133.       'mweb_animated_actions',
  1134.       'enable_desktop_amsterdam_info_panels',
  1135.  
  1136.       'kevlar_modern_sd',
  1137.       'problem_walkthrough_sd',
  1138.       'polymer_video_renderer_defer_menu',
  1139.  
  1140.  
  1141.       'enable_html5_teal_ad_badge',
  1142.       'kevlar_ytb_live_badges',
  1143.       'live_chat_enable_new_moderator_badge',
  1144.       'live_chat_prepend_badges',
  1145.       'live_chat_bold_color_usernames',
  1146.       'render_custom_emojis_as_small_images',
  1147.  
  1148.       'web_enable_dynamic_metadata',
  1149.  
  1150.       'web_animated_like',
  1151.       'web_animated_like_lazy_load',
  1152.       'desktop_delay_player_resizing',
  1153.  
  1154.  
  1155.       ...(ALLOW_THEATER_PLAYER_SHORTCUT_KEY_T ? [
  1156.  
  1157.         // 'clean_up_manual_attribution_header',
  1158.         // 'empty_attributed_string_killswitch',
  1159.         // 'enable_profile_cards_cairo_updates',
  1160.         // 'enable_teaser_framework_web_client',
  1161.         // 'enable_tectonic_ad_ux_for_halftime',
  1162.         // 'enable_web_shorts_save_audio_pivot',
  1163.         // 'kevlar_clear_duplicate_pref_cookie',
  1164.         // 'kevlar_disable_background_prefetch',
  1165.         // 'kevlar_transcript_engagement_panel',
  1166.         'kevlar_watch_flexy_theater_manager',
  1167.         // 'mdx_load_cast_api_bootstrap_script',
  1168.         // 'web_collab_playlist_thumbnail_size',
  1169.         // 'web_fix_back_button_player_loading',
  1170.         // 'web_fix_dynamic_metadata_diacritic',
  1171.         // 'web_kevlar_enable_adaptive_signals',
  1172.         // 'web_move_autoplay_video_under_chip',
  1173.         // 'web_player_small_hbp_settings_menu',
  1174.         // 'web_rendererstamper_event_listener',
  1175.         // 'web_shorts_skip_loading_same_index',
  1176.         // 'web_shorts_suggested_action_no_bvm',
  1177.         // 'web_use_updated_icon_for_oac_badge',
  1178.         // 'wiz_prevent_watched_double_logging',
  1179.  
  1180.       ] : []),
  1181.  
  1182.     ].concat(
  1183.       [
  1184.       ]
  1185.     );
  1186.  
  1187.  
  1188.     const s = new Set(BY_PASS);
  1189.  
  1190.     return s;
  1191.  
  1192.   };
  1193.   let cachedSet = null;
  1194.  
  1195.   const hExperimentFlagsFn = () => {
  1196.  
  1197.     if (brc > 4) brc = 4;
  1198.  
  1199.     const use_maintain_stable_list = getSettingValue(ENABLE_EXPERIMENT_FLAGS_MAINTAIN_STABLE_LIST);
  1200.     const use_maintain_reuse_components = getSettingValue(ENABLE_EXPERIMENT_FLAGS_MAINTAIN_REUSE_COMPONENTS);
  1201.     const use_defer_detach = getSettingValue(ENABLE_EXPERIMENT_FLAGS_DEFER_DETACH);
  1202.     const no_autoplay_toggle = getSettingValue(ENABLE_EXPERIMENT_FLAGS_NO_AUTOPLAY_TOGGLE);
  1203.     ENABLE_EXPERIMENT_FLAGS_NO_AUTOPLAY_TOGGLE.currentValue = no_autoplay_toggle;
  1204.  
  1205.     if (use_maintain_stable_list) Promise.resolve().then(() => console.debug("use_maintain_stable_list"));
  1206.     if (use_maintain_reuse_components) Promise.resolve().then(() => console.debug("use_maintain_reuse_components"));
  1207.     if (use_defer_detach) Promise.resolve().then(() => console.debug("use_defer_detach"));
  1208.     if (no_autoplay_toggle) Promise.resolve().then(() => console.debug("no_autoplay_toggle"));
  1209.  
  1210.     cachedSet = cachedSet || cachedSetFn({ use_maintain_stable_list, use_maintain_reuse_components, use_defer_detach, no_autoplay_toggle });
  1211.  
  1212.     const mps = [];
  1213.  
  1214.     setTimeout(async () => {
  1215.  
  1216.       if (!mps.length) return;
  1217.       let ezz = new Set();
  1218.       let e1 = 999;
  1219.       let e2 = -999;
  1220.       for (const mp of mps) {
  1221.         for (const k of mp) {
  1222.           ezz.add(k);
  1223.           const kl = k.length;
  1224.           if (kl < e1) e1 = kl;
  1225.           if (kl > e2) e2 = kl;
  1226.         }
  1227.       }
  1228.       mps.length = 0;
  1229.  
  1230.       if (!ezz.size) return;
  1231.  
  1232.       await new Promise(r => window.setTimeout(r, 1));
  1233.       let qt = Date.now();
  1234.  
  1235.       console.log('EXPERIMENT_FLAGS', [e1, e2, ezz.size]);
  1236.  
  1237.       let mf = false;
  1238.       const obj = JSON.parse(localStorage['bpghn02'] || '{}');
  1239.       for (const e of ezz) {
  1240.         if (obj[e]) continue;
  1241.         obj[e] = qt;
  1242.         mf = true;
  1243.       }
  1244.       if (mf) {
  1245.  
  1246.         localStorage['bpghn02'] = JSON.stringify(obj);
  1247.       }
  1248.  
  1249.       // await new Promise(r => window.setTimeout(r, 1));
  1250.  
  1251.       const getEFT = function (after, offset) {
  1252.  
  1253.  
  1254.         after = typeof after === 'string' ? new Date(after) : after;
  1255.         let afterValue = +after;
  1256.  
  1257.  
  1258.         let arr = Object.entries(obj).map(e => {
  1259.           return { key: e[0], date: e[1], len: e[0].length };
  1260.         }).sort((a, b) => {
  1261.           return a.date < b.date ? 1 : a.date > b.date ? -1 : a.len < b.len ? 1 : a.len > b.len ? -1 : `${a.key}`.localeCompare(`${b.key}`);
  1262.         });
  1263.  
  1264.         if (afterValue > 0) {
  1265.           arr = arr.filter(e => {
  1266.             return e.date >= afterValue + offset;
  1267.           })
  1268.         }
  1269.  
  1270.         return [arr, after, afterValue];
  1271.  
  1272.       }
  1273.  
  1274.       window.log_EXPERIMENT_FLAGS_Tamer = function (after, toString) {
  1275.  
  1276.         let [arr, after_, afterValue] = getEFT(after, -86400000);
  1277.  
  1278.         const r = {
  1279.           "!log": arr,
  1280.           after: afterValue > 0 ? new Date(afterValue) : null
  1281.         };
  1282.         console.log("log_EXPERIMENT_FLAGS_Tamer", toString ? JSON.stringify(r) : r);
  1283.  
  1284.       }
  1285.  
  1286.       window.kl_EXPERIMENT_FLAGS_Tamer = function (after, kl) {
  1287.  
  1288.  
  1289.         let [arr, after_, afterValue] = getEFT(after, -86400000);
  1290.  
  1291.         arr = arr.filter(e => {
  1292.           return e.len === kl
  1293.         });
  1294.  
  1295.         return arr.map(e => e.key).join('|')
  1296.  
  1297.  
  1298.       }
  1299.  
  1300.  
  1301.     }, 800);
  1302.  
  1303.     // I don't know why it requires to be extracted function.
  1304.     const mex = (EXPERIMENT_FLAGS, mzFlagDetected, fEntries) => {
  1305.  
  1306.       let ezz = new Set();
  1307.  
  1308.       for (const [key, value] of fEntries) {
  1309.  
  1310.  
  1311.         if (value === true) {
  1312.  
  1313.           // if(key.indexOf('modern')>=0 || key.indexOf('enable')>=0 || key.indexOf('theme')>=0 || key.indexOf('skip')>=0  || key.indexOf('ui')>=0 || key.indexOf('observer')>=0 || key.indexOf('polymer')>=0 )continue;
  1314.  
  1315.           if (mzFlagDetected.has(key)) continue;
  1316.           mzFlagDetected.add(key);
  1317.  
  1318.           if (cachedSet.has(key)) continue; // const BY_PASS = [
  1319.  
  1320.           if (SPACEBAR_CONTROL < 0 && key.includes('speedmaster')) continue;
  1321.  
  1322.           if (FLAG_STRATEGY_20240413 && key.includes('network')) continue;
  1323.           if (FLAG_STRATEGY_20240413 && key.includes('less')) continue;
  1324.           if (FLAG_STRATEGY_20240413 && key.includes('latency')) continue;
  1325.           if (FLAG_STRATEGY_20240413 && key.includes('slow')) continue;
  1326.           if (FLAG_STRATEGY_20240413 && key.includes('steam')) continue;
  1327.  
  1328.           // const kl = key.length;
  1329.           // const kl7 = kl % 7;
  1330.           // const kl5 = kl % 5;
  1331.           // const kl3 = kl % 3;
  1332.           // const kl2 = kl % 2;
  1333.  
  1334.           if (USE_byPassConditionAnalyzer && byPassConditionAnalyzer.testFn_(key, false)) continue;
  1335.  
  1336.  
  1337.           if (key.startsWith('html5_')) {
  1338.  
  1339.             if (IGNORE_VIDEO_SOURCE_RELATED) {
  1340.               continue;
  1341.             }
  1342.  
  1343.             // if(IGNORE_VIDEO_SOURCE_RELATED){
  1344.             //   if(key ==='html5_enable_vp9_fairplay') continue;
  1345.             //   if(key ==='html5_disable_av1_hdr') continue;
  1346.             //   if(key ==='html5_disable_hfr_when_vp9_encrypted_2k4k_unsupported') continue;
  1347.             //   if(key ==='html5_account_onesie_format_selection_during_format_filter') continue;
  1348.             //   if(key ==='html5_prefer_hbr_vp9_over_av1') continue;
  1349.             // }
  1350.  
  1351.           } else if (key.startsWith('kevlar_')) {
  1352.  
  1353.           } else {
  1354.  
  1355.           }
  1356.  
  1357.           ezz.add(key);
  1358.  
  1359.           // console.log(key)
  1360.           EXPERIMENT_FLAGS[key] = false;
  1361.         }
  1362.       }
  1363.  
  1364.       mps.push(ezz);
  1365.       ezz = null;
  1366.     }
  1367.  
  1368.     const mey = (EXPERIMENT_FLAGS, mzFlagDetected) => {
  1369.       // return;
  1370.  
  1371.       if (FLAG_STRATEGY_20240503) {
  1372.         EXPERIMENT_FLAGS.disable_enf_isd = true;
  1373.         EXPERIMENT_FLAGS.ab_det_el_h = false;
  1374.         EXPERIMENT_FLAGS.ks_det_gpbl = true;
  1375.         EXPERIMENT_FLAGS.ks_get_o_pp = true;
  1376.         EXPERIMENT_FLAGS.ab_deg_unex_thr = true;
  1377.         EXPERIMENT_FLAGS.ab_det_sc_inj_enf = false;
  1378.         EXPERIMENT_FLAGS.debug_sk_em_precheck = false;
  1379.       }
  1380.  
  1381.       if (NO_DEBUG_FLAG) {
  1382.         EXPERIMENT_FLAGS.debug_forward_web_query_parameters = false;
  1383.         EXPERIMENT_FLAGS.debug_handle_relative_url_for_query_forward_killswitch = false;
  1384.         EXPERIMENT_FLAGS.debug_web_ve_data = false;
  1385.       }
  1386.  
  1387.  
  1388.       if (DISABLE_FLAGS_SHADYDOM_FREE) {
  1389.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_node_methods = false;
  1390.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_query_methods = false;
  1391.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_readonly_properties_batch_one = false;
  1392.         EXPERIMENT_FLAGS.enable_shadydom_free_parent_node = false;
  1393.         EXPERIMENT_FLAGS.enable_shadydom_free_children = false;
  1394.         EXPERIMENT_FLAGS.enable_shadydom_free_last_child = false;
  1395.       }
  1396.  
  1397.       if (SPACEBAR_CONTROL === 0) {
  1398.         EXPERIMENT_FLAGS.disable_space_scroll_fix = false;
  1399.         EXPERIMENT_FLAGS.global_spacebar_pause = false;
  1400.         EXPERIMENT_FLAGS.web_speedmaster_spacebar_control = false;
  1401.       } else if (SPACEBAR_CONTROL === 1) {
  1402.  
  1403.         EXPERIMENT_FLAGS.disable_space_scroll_fix = false;
  1404.         EXPERIMENT_FLAGS.global_spacebar_pause = true;
  1405.         EXPERIMENT_FLAGS.web_speedmaster_spacebar_control = false;
  1406.       } else if (SPACEBAR_CONTROL === 2) {
  1407.  
  1408.         EXPERIMENT_FLAGS.disable_space_scroll_fix = false;
  1409.         EXPERIMENT_FLAGS.global_spacebar_pause = true;
  1410.         EXPERIMENT_FLAGS.web_speedmaster_spacebar_control = true;
  1411.       }
  1412.  
  1413.       EXPERIMENT_FLAGS.use_cfr_monitor = false;
  1414.       EXPERIMENT_FLAGS.skip_network_check_if_cfr = false;
  1415.  
  1416.       if (FLAG_STRATEGY_20240413) {
  1417.         EXPERIMENT_FLAGS.kevlar_watch_grid = false;
  1418.         EXPERIMENT_FLAGS.kevlar_watch_grid_hide_chips = false;
  1419.         EXPERIMENT_FLAGS.kevlar_watch_grid_reduced_top_margin_rich_grid = false;
  1420.         EXPERIMENT_FLAGS.kevlar_watch_grid_top_companion = false;
  1421.         EXPERIMENT_FLAGS.kevlar_watch_fixie = false;
  1422.         EXPERIMENT_FLAGS.kevlar_watch_grid_auto_open_playlist = false;
  1423.         EXPERIMENT_FLAGS.action_companion_center_align_description = false;
  1424.         EXPERIMENT_FLAGS.action_companion_truncate_domain = false;
  1425.       }
  1426.  
  1427.       if (ENABLE_MINOR_CHAT_FEATURE_UPGRADE) {
  1428.  
  1429.  
  1430.         EXPERIMENT_FLAGS.web_supports_animations_api = true;
  1431.         EXPERIMENT_FLAGS.smartimation_background = true;
  1432.         // EXPERIMENT_FLAGS.register_web_smartimations_component = true;
  1433.  
  1434.         EXPERIMENT_FLAGS.enable_native_live_chat_on_kevlar = true;
  1435.  
  1436.         EXPERIMENT_FLAGS.live_chat_enable_qna_replay = true;
  1437.         EXPERIMENT_FLAGS.live_chat_aggregation = true;
  1438.         EXPERIMENT_FLAGS.live_chat_web_use_emoji_manager_singleton = true;
  1439.         // EXPERIMENT_FLAGS.enable_docked_chat_messages = true;
  1440.  
  1441.         EXPERIMENT_FLAGS.live_chat_mention_regex_update = true;
  1442.  
  1443.       }
  1444.  
  1445.       // EXPERIMENT_FLAGS.live_chat_taller_emoji_picker = true;
  1446.       // EXPERIMENT_FLAGS.live_chat_web_input_update = true;
  1447.  
  1448.       if (ENABLE_EMOJI_PICKER_NEW_STYLE) {
  1449.  
  1450.         EXPERIMENT_FLAGS.live_chat_emoji_picker_restyle = true;
  1451.         EXPERIMENT_FLAGS.live_chat_emoji_picker_restyle_remain_open_on_send = true;
  1452.         EXPERIMENT_FLAGS.live_chat_taller_emoji_picker = false;
  1453.  
  1454.       }
  1455.  
  1456.       if (ENABLE_BADGE_STYLE) {
  1457.  
  1458.         EXPERIMENT_FLAGS.enable_html5_teal_ad_badge = true;
  1459.         EXPERIMENT_FLAGS.kevlar_ytb_live_badges = true;
  1460.         EXPERIMENT_FLAGS.live_chat_enable_new_moderator_badge = true;
  1461.         EXPERIMENT_FLAGS.live_chat_prepend_badges = true;
  1462.  
  1463.         EXPERIMENT_FLAGS.live_chat_bold_color_usernames = true;
  1464.         EXPERIMENT_FLAGS.render_custom_emojis_as_small_images = true;
  1465.  
  1466.  
  1467.       }
  1468.  
  1469.       // EXPERIMENT_FLAGS.kevlar_wiz_prototype_enable_all_components = true;
  1470.  
  1471.  
  1472.       EXPERIMENT_FLAGS.html5_allow_asmjs = true;
  1473.       EXPERIMENT_FLAGS.html5_honor_caption_availabilities_in_audio_track = true;
  1474.       EXPERIMENT_FLAGS.web_player_hide_nitrate_promo_tooltip = true;
  1475.       EXPERIMENT_FLAGS.html5_enable_vod_slar_with_notify_pacf = true;
  1476.       EXPERIMENT_FLAGS.html5_recognize_predict_start_cue_point = true;
  1477.       EXPERIMENT_FLAGS.enable_player_logging_lr_home_infeed_ads = false;
  1478.  
  1479.       EXPERIMENT_FLAGS.log_gel_compression_latency = true;
  1480.       EXPERIMENT_FLAGS.log_gel_compression_latency_lr = true;
  1481.       EXPERIMENT_FLAGS.log_jspb_serialize_latency = true;
  1482.  
  1483.       if (NO_REFRESH) {
  1484.  
  1485.         EXPERIMENT_FLAGS.kevlar_watch_metadata_refresh_standardized_body_typography = false;
  1486.         EXPERIMENT_FLAGS.kevlar_refresh_gesture = false;
  1487.  
  1488.       }
  1489.  
  1490.  
  1491.       if (NO_DESKTOP_DELAY_PLAYER_RESIZING) {
  1492.  
  1493.         EXPERIMENT_FLAGS.desktop_delay_player_resizing = false;
  1494.       }
  1495.       if (NO_ANIMATED_LIKE) {
  1496.         EXPERIMENT_FLAGS.web_animated_like = false;
  1497.         EXPERIMENT_FLAGS.web_animated_like_lazy_load = false;
  1498.       }
  1499.  
  1500.       if (use_maintain_stable_list) {
  1501.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1502.           // EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true; // timestamp toggle issue
  1503.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1504.           // EXPERIMENT_FLAGS.kevlar_tuner_should_maintain_stable_list = true; // fallback // timestamp toggle issue
  1505.         }
  1506.       }
  1507.  
  1508.       if (use_maintain_reuse_components) {
  1509.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1510.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1511.         EXPERIMENT_FLAGS.kevlar_should_reuse_components = true; // fallback
  1512.       }
  1513.  
  1514.       if (use_defer_detach) {
  1515.         EXPERIMENT_FLAGS.kevlar_tuner_should_defer_detach = true;
  1516.       }
  1517.  
  1518.       // EXPERIMENT_FLAGS.kevlar_prefetch_data_augments_network_data = true; // TBC
  1519.  
  1520.       EXPERIMENT_FLAGS.kevlar_clear_non_displayable_url_params = true;
  1521.       EXPERIMENT_FLAGS.kevlar_clear_duplicate_pref_cookie = true;
  1522.       // EXPERIMENT_FLAGS.kevlar_unified_player_clear_watch_next_killswitch = true;
  1523.       EXPERIMENT_FLAGS.kevlar_player_playlist_use_local_index = true;
  1524.       // EXPERIMENT_FLAGS.kevlar_non_watch_unified_player = true;
  1525.       // EXPERIMENT_FLAGS.kevlar_player_update_killswitch = true;
  1526.  
  1527.       EXPERIMENT_FLAGS.web_secure_pref_cookie_killswitch = true;
  1528.       EXPERIMENT_FLAGS.ytidb_clear_optimizations_killswitch = true;
  1529.       // EXPERIMENT_FLAGS.defer_overlays = true;
  1530.  
  1531.  
  1532.       if (COMMENTS_NO_DELAY) {
  1533.         EXPERIMENT_FLAGS.kevlar_tuner_default_comments_delay = 0;
  1534.         EXPERIMENT_FLAGS.kevlar_tuner_run_default_comments_delay = false;
  1535.       }
  1536.  
  1537.     }
  1538.     const setterFn = (EXPERIMENT_FLAGS, mzFlagDetected) => {
  1539.  
  1540.       const fEntries = Object.entries(EXPERIMENT_FLAGS);
  1541.       mex(EXPERIMENT_FLAGS, mzFlagDetected, fEntries);
  1542.       mey(EXPERIMENT_FLAGS, mzFlagDetected);
  1543.  
  1544.     };
  1545.  
  1546.     return setterFn;
  1547.  
  1548.  
  1549.   };
  1550.  
  1551.   let _setterFn = null;
  1552.  
  1553.   const setupConfig = (config_) => {
  1554.  
  1555.     if (config_.EXPERIMENT_FLAGS) {
  1556.  
  1557.       const setterFn = _setterFn || (_setterFn = hExperimentFlagsFn());
  1558.  
  1559.       setterFn(config_.EXPERIMENT_FLAGS, mzFlagDetected1);
  1560.  
  1561.       if (config_.EXPERIMENTS_FORCED_FLAGS) setterFn(config_.EXPERIMENTS_FORCED_FLAGS, mzFlagDetected2);
  1562.     }
  1563.  
  1564.     const playerKevlar = (config_.WEB_PLAYER_CONTEXT_CONFIGS || 0).WEB_PLAYER_CONTEXT_CONFIG_ID_KEVLAR_WATCH || 0;
  1565.  
  1566.     if (playerKevlar && !zPlayerKevlar) {
  1567.       zPlayerKevlar = true;
  1568.  
  1569.       if (NO_SerializedExperiment && typeof playerKevlar.serializedExperimentFlags === 'string' && typeof playerKevlar.serializedExperimentIds === 'string') {
  1570.         fixSerializedExperiment(playerKevlar);
  1571.       }
  1572.  
  1573.     }
  1574.  
  1575.   }
  1576.  
  1577.  
  1578.   const looperFn = (config_) => {
  1579.     if (--brc < 0) return;
  1580.  
  1581.     if (!config_) {
  1582.       try {
  1583.         config_ = yt.config_ || ytcfg.data_;
  1584.       } catch (e) { }
  1585.     }
  1586.     if (config_) setupConfig(config_);
  1587.  
  1588.   };
  1589.  
  1590.  
  1591.   window._ytConfigHacks.add((config_) => {
  1592.     looperFn(config_);
  1593.   });
  1594.   looperFn();
  1595.  
  1596.   if (isMainWindow) {
  1597.  
  1598.     console.groupCollapsed(
  1599.       "%cYouTube EXPERIMENT_FLAGS Tamer",
  1600.       "background-color: #EDE43B ; color: #000 ; font-weight: bold ; padding: 4px ;"
  1601.     );
  1602.  
  1603.     console.log("Script is loaded.");
  1604.     console.log("This might affect the new features when YouTube rolls them out to general users.");
  1605.     console.log("If you found any issue in using YouTube, please disable this script to check whether the issue is due to this script or not.");
  1606.  
  1607.     console.groupEnd();
  1608.  
  1609.   }
  1610.  
  1611. })();