diff --git a/src/core/Music.ts b/src/core/Music.ts
index 629140a7..41a50b67 100644
--- a/src/core/Music.ts
+++ b/src/core/Music.ts
@@ -20,7 +20,6 @@ import SearchSuggestionsSection from '../parser/classes/SearchSuggestionsSection
 import SectionList from '../parser/classes/SectionList.js';
 import Tab from '../parser/classes/Tab.js';
 
-import { observe } from '../parser/helpers.js';
 import Proto from '../proto/index.js';
 import { generateRandomString, InnertubeError, throwIfMissing } from '../utils/Utils.js';
 
@@ -327,7 +326,7 @@ class Music {
       throw new InnertubeError('Unexpected response', page);
 
     if (page.contents.item().key('type').string() === 'Message')
-      throw new InnertubeError(page.contents.item().as(Message).text, video_id);
+      throw new InnertubeError(page.contents.item().as(Message).text.toString(), video_id);
 
     const section_list = page.contents.item().as(SectionList).contents;
 
@@ -357,12 +356,12 @@ class Music {
       client: 'YTMUSIC'
     });
 
-    const search_suggestions_section = response.contents_memo?.getType(SearchSuggestionsSection)?.[0];
+    if (!response.contents_memo)
+      throw new InnertubeError('Unexpected response', response);
 
-    if (!search_suggestions_section?.contents.is_array)
-      return observe([] as YTNode[]);
+    const search_suggestions_section = response.contents_memo.getType(SearchSuggestionsSection).first();
 
-    return search_suggestions_section?.contents.array();
+    return search_suggestions_section.contents;
   }
 }
 
diff --git a/src/parser/classes/AccountChannel.ts b/src/parser/classes/AccountChannel.ts
index 6c3af847..50dc2695 100644
--- a/src/parser/classes/AccountChannel.ts
+++ b/src/parser/classes/AccountChannel.ts
@@ -3,7 +3,7 @@ import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
 
-class AccountChannel extends YTNode {
+export default class AccountChannel extends YTNode {
   static type = 'AccountChannel';
 
   title: Text;
@@ -14,6 +14,4 @@ class AccountChannel extends YTNode {
     this.title = new Text(data.title);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default AccountChannel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/AccountItemSection.ts b/src/parser/classes/AccountItemSection.ts
index eb64f8da..c614df6c 100644
--- a/src/parser/classes/AccountItemSection.ts
+++ b/src/parser/classes/AccountItemSection.ts
@@ -1,14 +1,16 @@
 import Parser from '../index.js';
-
+import AccountItemSectionHeader from './AccountItemSectionHeader.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import AccountItemSectionHeader from './AccountItemSectionHeader.js';
 
-import { YTNode } from '../helpers.js';
+import { YTNode, observe, type ObservedArray } from '../helpers.js';
 import type { RawNode } from '../index.js';
 
-class AccountItem {
+/**
+ * Not a real renderer but we treat it as one to keep things organized.
+ */
+export class AccountItem extends YTNode {
   static type = 'AccountItem';
 
   account_name: Text;
@@ -20,27 +22,26 @@ class AccountItem {
   account_byline: Text;
 
   constructor(data: RawNode) {
+    super();
     this.account_name = new Text(data.accountName);
     this.account_photo = Thumbnail.fromResponse(data.accountPhoto);
-    this.is_selected = data.isSelected;
-    this.is_disabled = data.isDisabled;
-    this.has_channel = data.hasChannel;
+    this.is_selected = !!data.isSelected;
+    this.is_disabled = !!data.isDisabled;
+    this.has_channel = !!data.hasChannel;
     this.endpoint = new NavigationEndpoint(data.serviceEndpoint);
     this.account_byline = new Text(data.accountByline);
   }
 }
 
-class AccountItemSection extends YTNode {
+export default class AccountItemSection extends YTNode {
   static type = 'AccountItemSection';
 
-  contents;
-  header;
+  contents: ObservedArray<AccountItem>;
+  header: AccountItemSectionHeader | null;
 
   constructor(data: RawNode) {
     super();
-    this.contents = data.contents.map((ac: any) => new AccountItem(ac.accountItem));
+    this.contents = observe<AccountItem>(data.contents.map((ac: RawNode) => new AccountItem(ac.accountItem)));
     this.header = Parser.parseItem(data.header, AccountItemSectionHeader);
   }
-}
-
-export default AccountItemSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/AccountItemSectionHeader.ts b/src/parser/classes/AccountItemSectionHeader.ts
index 1653392a..7e6fa325 100644
--- a/src/parser/classes/AccountItemSectionHeader.ts
+++ b/src/parser/classes/AccountItemSectionHeader.ts
@@ -1,7 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
-class AccountItemSectionHeader extends YTNode {
+
+export default class AccountItemSectionHeader extends YTNode {
   static type = 'AccountItemSectionHeader';
 
   title: Text;
@@ -10,6 +11,4 @@ class AccountItemSectionHeader extends YTNode {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default AccountItemSectionHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/AccountSectionList.ts b/src/parser/classes/AccountSectionList.ts
index 2c5759d7..b42c8211 100644
--- a/src/parser/classes/AccountSectionList.ts
+++ b/src/parser/classes/AccountSectionList.ts
@@ -4,7 +4,8 @@ import AccountItemSection from './AccountItemSection.js';
 
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
-class AccountSectionList extends YTNode {
+
+export default class AccountSectionList extends YTNode {
   static type = 'AccountSectionList';
 
   contents;
@@ -15,6 +16,4 @@ class AccountSectionList extends YTNode {
     this.contents = Parser.parseItem(data.contents[0], AccountItemSection);
     this.footers = Parser.parseItem(data.footers[0], AccountChannel);
   }
-}
-
-export default AccountSectionList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Alert.ts b/src/parser/classes/Alert.ts
index e080d24c..cd1d8e99 100644
--- a/src/parser/classes/Alert.ts
+++ b/src/parser/classes/Alert.ts
@@ -1,7 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
-class Alert extends YTNode {
+
+export default class Alert extends YTNode {
   static type = 'Alert';
 
   text: Text;
@@ -12,6 +13,4 @@ class Alert extends YTNode {
     this.text = new Text(data.text);
     this.alert_type = data.type;
   }
-}
-
-export default Alert;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/AudioOnlyPlayability.ts b/src/parser/classes/AudioOnlyPlayability.ts
index f5f6daaa..1ccea68e 100644
--- a/src/parser/classes/AudioOnlyPlayability.ts
+++ b/src/parser/classes/AudioOnlyPlayability.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
-class AudioOnlyPlayability extends YTNode {
+
+export default class AudioOnlyPlayability extends YTNode {
   static type = 'AudioOnlyPlayability';
 
   audio_only_availability: string;
@@ -9,6 +10,4 @@ class AudioOnlyPlayability extends YTNode {
     super();
     this.audio_only_availability = data.audioOnlyAvailability;
   }
-}
-
-export default AudioOnlyPlayability;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/AutomixPreviewVideo.ts b/src/parser/classes/AutomixPreviewVideo.ts
index 0759f3fa..a47d4008 100644
--- a/src/parser/classes/AutomixPreviewVideo.ts
+++ b/src/parser/classes/AutomixPreviewVideo.ts
@@ -1,7 +1,8 @@
 import { YTNode } from '../helpers.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import type { RawNode } from '../index.js';
-class AutomixPreviewVideo extends YTNode {
+
+export default class AutomixPreviewVideo extends YTNode {
   static type = 'AutomixPreviewVideo';
 
   playlist_video?: { endpoint: NavigationEndpoint };
@@ -14,6 +15,4 @@ class AutomixPreviewVideo extends YTNode {
       };
     }
   }
-}
-
-export default AutomixPreviewVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/BackstageImage.ts b/src/parser/classes/BackstageImage.ts
index af11137e..bbb54a5a 100644
--- a/src/parser/classes/BackstageImage.ts
+++ b/src/parser/classes/BackstageImage.ts
@@ -1,18 +1,17 @@
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class BackstageImage extends YTNode {
+export default class BackstageImage extends YTNode {
   static type = 'BackstageImage';
 
   image: Thumbnail[];
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.image = Thumbnail.fromResponse(data.image);
     this.endpoint = new NavigationEndpoint(data.command);
   }
-}
-
-export default BackstageImage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/BackstagePost.ts b/src/parser/classes/BackstagePost.ts
index 0ccd3518..e556e59c 100644
--- a/src/parser/classes/BackstagePost.ts
+++ b/src/parser/classes/BackstagePost.ts
@@ -1,13 +1,12 @@
-import Parser from '../index.js';
-import Author from './misc/Author.js';
-import Text from './misc/Text.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import CommentActionButtons from './comments/CommentActionButtons.js';
 import Menu from './menus/Menu.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
 
-import { YTNode } from '../helpers.js';
-
-class BackstagePost extends YTNode {
+export default class BackstagePost extends YTNode {
   static type = 'BackstagePost';
 
   id: string;
@@ -18,13 +17,13 @@ class BackstagePost extends YTNode {
   vote_status?: string;
   vote_count?: Text;
   menu?: Menu | null;
-  action_buttons;
-  vote_button;
+  action_buttons?: CommentActionButtons | null;
+  vote_button?: CommentActionButtons | null;
   surface: string;
   endpoint?: NavigationEndpoint;
   attachment;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.postId;
 
@@ -36,40 +35,38 @@ class BackstagePost extends YTNode {
     this.content = new Text(data.contentText);
     this.published = new Text(data.publishedTimeText);
 
-    if (data.pollStatus) {
+    if (Reflect.has(data, 'pollStatus')) {
       this.poll_status = data.pollStatus;
     }
 
-    if (data.voteStatus) {
+    if (Reflect.has(data, 'voteStatus')) {
       this.vote_status = data.voteStatus;
     }
 
-    if (data.voteCount) {
+    if (Reflect.has(data, 'voteCount')) {
       this.vote_count = new Text(data.voteCount);
     }
 
-    if (data.actionMenu) {
+    if (Reflect.has(data, 'actionMenu')) {
       this.menu = Parser.parseItem(data.actionMenu, Menu);
     }
 
-    if (data.actionButtons) {
+    if (Reflect.has(data, 'actionButtons')) {
       this.action_buttons = Parser.parseItem(data.actionButtons, CommentActionButtons);
     }
 
-    if (data.voteButton) {
+    if (Reflect.has(data, 'voteButton')) {
       this.vote_button = Parser.parseItem(data.voteButton, CommentActionButtons);
     }
 
-    if (data.navigationEndpoint) {
+    if (Reflect.has(data, 'navigationEndpoint')) {
       this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     }
 
-    if (data.backstageAttachment) {
+    if (Reflect.has(data, 'backstageAttachment')) {
       this.attachment = Parser.parseItem(data.backstageAttachment);
     }
 
     this.surface = data.surface;
   }
-}
-
-export default BackstagePost;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/BackstagePostThread.ts b/src/parser/classes/BackstagePostThread.ts
index 77e17a19..189ceb1c 100644
--- a/src/parser/classes/BackstagePostThread.ts
+++ b/src/parser/classes/BackstagePostThread.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class BackstagePostThread extends YTNode {
+export default class BackstagePostThread extends YTNode {
   static type = 'BackstagePostThread';
 
-  post;
+  post: YTNode;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.post = Parser.parseItem(data.post);
   }
-}
-
-export default BackstagePostThread;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/BrowseFeedActions.ts b/src/parser/classes/BrowseFeedActions.ts
index b9e47eb0..432222e9 100644
--- a/src/parser/classes/BrowseFeedActions.ts
+++ b/src/parser/classes/BrowseFeedActions.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class BrowseFeedActions extends YTNode {
+export default class BrowseFeedActions extends YTNode {
   static type = 'BrowseFeedActions';
 
-  contents;
+  contents: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.contents = Parser.parseArray(data.contents);
   }
-}
-
-export default BrowseFeedActions;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/BrowserMediaSession.ts b/src/parser/classes/BrowserMediaSession.ts
index f62fd2ed..23f2a2c0 100644
--- a/src/parser/classes/BrowserMediaSession.ts
+++ b/src/parser/classes/BrowserMediaSession.ts
@@ -1,18 +1,17 @@
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class BrowserMediaSession extends YTNode {
+export default class BrowserMediaSession extends YTNode {
   static type = 'BrowserMediaSession';
 
-  album;
-  thumbnails;
+  album: Text;
+  thumbnails: Thumbnail[];
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
     this.album = new Text(data.album);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnailDetails);
   }
-}
-
-export default BrowserMediaSession;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Button.ts b/src/parser/classes/Button.ts
index 6971e080..3d83207a 100644
--- a/src/parser/classes/Button.ts
+++ b/src/parser/classes/Button.ts
@@ -1,6 +1,5 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
-
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
 
@@ -8,31 +7,29 @@ export default class Button extends YTNode {
   static type = 'Button';
 
   text?: string;
-
   label?: string;
   tooltip?: string;
   icon_type?: string;
   is_disabled?: boolean;
-
   endpoint: NavigationEndpoint;
 
   constructor(data: RawNode) {
     super();
 
-    if (data.text) {
+    if (Reflect.has(data, 'text')) {
       this.text = new Text(data.text).toString();
     }
 
-    if (data.accessibility?.label) {
-      this.label = data.accessibility?.label;
+    if (Reflect.has(data, 'accessibility') && Reflect.has(data.accessibility, 'label')) {
+      this.label = data.accessibility.label;
     }
 
-    if (data.tooltip) {
+    if (Reflect.has(data, 'tooltip')) {
       this.tooltip = data.tooltip;
     }
 
-    if (data.icon?.iconType) {
-      this.icon_type = data.icon?.iconType;
+    if (Reflect.has(data, 'icon') && Reflect.has(data.icon, 'iconType')) {
+      this.icon_type = data.icon.iconType;
     }
 
     if (Reflect.has(data, 'isDisabled')) {
diff --git a/src/parser/classes/C4TabbedHeader.ts b/src/parser/classes/C4TabbedHeader.ts
index 2c6c5be4..305cd4ed 100644
--- a/src/parser/classes/C4TabbedHeader.ts
+++ b/src/parser/classes/C4TabbedHeader.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import ChannelHeaderLinks from './ChannelHeaderLinks.js';
+import SubscribeButton from './SubscribeButton.js';
 import Author from './misc/Author.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-import Button from './Button.js';
-import ChannelHeaderLinks from './ChannelHeaderLinks.js';
-import SubscribeButton from './SubscribeButton.js';
-
-import { YTNode } from '../helpers.js';
-
-class C4TabbedHeader extends YTNode {
+export default class C4TabbedHeader extends YTNode {
   static type = 'C4TabbedHeader';
 
   author: Author;
@@ -24,53 +22,51 @@ class C4TabbedHeader extends YTNode {
   channel_handle?: Text;
   channel_id?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.author = new Author({
       simpleText: data.title,
       navigationEndpoint: data.navigationEndpoint
     }, data.badges, data.avatar);
 
-    if (data.banner) {
+    if (Reflect.has(data, 'banner')) {
       this.banner = Thumbnail.fromResponse(data.banner);
     }
 
-    if (data.tv_banner) {
+    if (Reflect.has(data, 'tv_banner')) {
       this.tv_banner = Thumbnail.fromResponse(data.tvBanner);
     }
 
-    if (data.mobile_banner) {
+    if (Reflect.has(data, 'mobile_banner')) {
       this.mobile_banner = Thumbnail.fromResponse(data.mobileBanner);
     }
 
-    if (data.subscriberCountText) {
+    if (Reflect.has(data, 'subscriberCountText')) {
       this.subscribers = new Text(data.subscriberCountText);
     }
 
-    if (data.videosCountText) {
+    if (Reflect.has(data, 'videosCountText')) {
       this.videos_count = new Text(data.videosCountText);
     }
 
-    if (data.sponsorButton) {
+    if (Reflect.has(data, 'sponsorButton')) {
       this.sponsor_button = Parser.parseItem(data.sponsorButton, Button);
     }
 
-    if (data.subscribeButton) {
+    if (Reflect.has(data, 'subscribeButton')) {
       this.subscribe_button = Parser.parseItem(data.subscribeButton, [ SubscribeButton, Button ]);
     }
 
-    if (data.headerLinks) {
+    if (Reflect.has(data, 'headerLinks')) {
       this.header_links = Parser.parseItem(data.headerLinks, ChannelHeaderLinks);
     }
 
-    if (data.channelHandleText) {
+    if (Reflect.has(data, 'channelHandleText')) {
       this.channel_handle = new Text(data.channelHandleText);
     }
 
-    if (data.channelId) {
+    if (Reflect.has(data, 'channelId')) {
       this.channel_id = data.channelId;
     }
   }
-}
-
-export default C4TabbedHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CallToActionButton.ts b/src/parser/classes/CallToActionButton.ts
index a803b5ef..106f9aed 100644
--- a/src/parser/classes/CallToActionButton.ts
+++ b/src/parser/classes/CallToActionButton.ts
@@ -1,19 +1,18 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class CallToActionButton extends YTNode {
+export default class CallToActionButton extends YTNode {
   static type = 'CallToActionButton';
 
   label: Text;
   icon_type: string;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.label = new Text(data.label);
     this.icon_type = data.icon.iconType;
     this.style = data.style;
   }
-}
-
-export default CallToActionButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Card.ts b/src/parser/classes/Card.ts
index 872476d5..f49dc03c 100644
--- a/src/parser/classes/Card.ts
+++ b/src/parser/classes/Card.ts
@@ -1,13 +1,13 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class Card extends YTNode {
+export default class Card extends YTNode {
   static type = 'Card';
 
-  teaser;
-  content;
-  card_id: string | null;
-  feature: string | null;
+  teaser: YTNode;
+  content: YTNode;
+  card_id?: string;
+  feature?: string;
 
   cue_ranges: {
     start_card_active_ms: string;
@@ -16,12 +16,18 @@ class Card extends YTNode {
     icon_after_teaser_ms: string;
   }[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.teaser = Parser.parseItem(data.teaser);
     this.content = Parser.parseItem(data.content);
-    this.card_id = data.cardId || null;
-    this.feature = data.feature || null;
+
+    if (Reflect.has(data, 'cardId')) {
+      this.card_id = data.cardId;
+    }
+
+    if (Reflect.has(data, 'feature')) {
+      this.feature = data.feature;
+    }
 
     this.cue_ranges = data.cueRanges.map((cr: any) => ({
       start_card_active_ms: cr.startCardActiveMs,
@@ -30,6 +36,4 @@ class Card extends YTNode {
       icon_after_teaser_ms: cr.iconAfterTeaserMs
     }));
   }
-}
-
-export default Card;
+}
\ No newline at end of file
diff --git a/src/parser/classes/CardCollection.ts b/src/parser/classes/CardCollection.ts
index 5f60d81d..ba57812a 100644
--- a/src/parser/classes/CardCollection.ts
+++ b/src/parser/classes/CardCollection.ts
@@ -1,20 +1,18 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
 
-class CardCollection extends YTNode {
+export default class CardCollection extends YTNode {
   static type = 'CardCollection';
 
-  cards;
+  cards: ObservedArray<YTNode>;
   header: Text;
   allow_teaser_dismiss: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.cards = Parser.parseArray(data.cards);
     this.header = new Text(data.headerText);
     this.allow_teaser_dismiss = data.allowTeaserDismiss;
   }
-}
-
-export default CardCollection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CarouselHeader.ts b/src/parser/classes/CarouselHeader.ts
index fb3cde85..d3e617b1 100644
--- a/src/parser/classes/CarouselHeader.ts
+++ b/src/parser/classes/CarouselHeader.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class CarouselHeader extends YTNode {
+export default class CarouselHeader extends YTNode {
   static type = 'CarouselHeader';
 
-  contents: YTNode[];
+  contents: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.contents = Parser.parseArray(data.contents);
   }
-}
-
-export default CarouselHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CarouselItem.ts b/src/parser/classes/CarouselItem.ts
index 58810e79..871711a1 100644
--- a/src/parser/classes/CarouselItem.ts
+++ b/src/parser/classes/CarouselItem.ts
@@ -1,18 +1,17 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
-
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-class CarouselItem extends YTNode {
+export default class CarouselItem extends YTNode {
   static type = 'CarouselItem';
 
-  items: YTNode[];
+  items: ObservedArray<YTNode>;
   background_color: string;
   layout_style: string;
   pagination_thumbnails: Thumbnail[];
   paginator_alignment: string;
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
     this.items = Parser.parseArray(data.carouselItems);
     this.background_color = data.backgroundColor;
@@ -20,6 +19,9 @@ class CarouselItem extends YTNode {
     this.pagination_thumbnails = Thumbnail.fromResponse(data.paginationThumbnails);
     this.paginator_alignment = data.paginatorAlignment;
   }
-}
 
-export default CarouselItem;
\ No newline at end of file
+  // XXX: For consistency.
+  get contents() {
+    return this.items;
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/Channel.ts b/src/parser/classes/Channel.ts
index 5ce7ee58..1c08d869 100644
--- a/src/parser/classes/Channel.ts
+++ b/src/parser/classes/Channel.ts
@@ -1,28 +1,25 @@
-import Parser from '../index.js';
-
-import Text from './misc/Text.js';
-import Author from './misc/Author.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-
-import SubscribeButton from './SubscribeButton.js';
-import Button from './Button.js';
-
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import SubscribeButton from './SubscribeButton.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
 
-class Channel extends YTNode {
+export default class Channel extends YTNode {
   static type = 'Channel';
 
   id: string;
   author: Author;
-  subscribers: Text;
-  videos: Text;
+  subscriber_count: Text;
+  video_count: Text;
   long_byline: Text;
   short_byline: Text;
   endpoint: NavigationEndpoint;
   subscribe_button: SubscribeButton | Button | null;
   description_snippet: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.channelId;
 
@@ -31,15 +28,31 @@ class Channel extends YTNode {
       navigationEndpoint: data.navigationEndpoint
     }, data.ownerBadges, data.thumbnail);
 
-    // TODO: subscriberCountText is now the channel's handle and videoCountText is the subscriber count. Why haven't they renamed the properties?
-    this.subscribers = new Text(data.subscriberCountText);
-    this.videos = new Text(data.videoCountText);
+    // XXX: `subscriberCountText` is now the channel's handle and `videoCountText` is the subscriber count.
+    this.subscriber_count = new Text(data.subscriberCountText);
+    this.video_count = new Text(data.videoCountText);
     this.long_byline = new Text(data.longBylineText);
     this.short_byline = new Text(data.shortBylineText);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.subscribe_button = Parser.parseItem(data.subscribeButton, [ SubscribeButton, Button ]);
     this.description_snippet = new Text(data.descriptionSnippet);
   }
-}
 
-export default Channel;
+  /**
+   * @deprecated
+   * This will be removed in a future release.
+   * Please use {@link Channel.subscriber_count} instead.
+   */
+  get subscribers(): Text {
+    return this.subscriber_count;
+  }
+
+  /**
+   * @deprecated
+   * This will be removed in a future release.
+   * Please use {@link Channel.video_count} instead.
+   */
+  get videos(): Text {
+    return this.video_count;
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelAboutFullMetadata.ts b/src/parser/classes/ChannelAboutFullMetadata.ts
index d6ef6687..c6de7523 100644
--- a/src/parser/classes/ChannelAboutFullMetadata.ts
+++ b/src/parser/classes/ChannelAboutFullMetadata.ts
@@ -1,14 +1,11 @@
-import Parser from '../index.js';
-
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 
-import Button from './Button.js';
-
-import { YTNode } from '../helpers.js';
-
-class ChannelAboutFullMetadata extends YTNode {
+export default class ChannelAboutFullMetadata extends YTNode {
   static type = 'ChannelAboutFullMetadata';
 
   id: string;
@@ -22,15 +19,15 @@ class ChannelAboutFullMetadata extends YTNode {
     title: Text;
   }[];
 
-  views: Text;
-  joined: Text;
+  view_count: Text;
+  joined_date: Text;
   description: Text;
   email_reveal: NavigationEndpoint;
   can_reveal_email: boolean;
   country: Text;
-  buttons: Button[];
+  buttons: ObservedArray<Button>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.channelId;
     this.name = new Text(data.title);
@@ -43,14 +40,30 @@ class ChannelAboutFullMetadata extends YTNode {
       title: new Text(link.title)
     })) ?? [];
 
-    this.views = new Text(data.viewCountText);
-    this.joined = new Text(data.joinedDateText);
+    this.view_count = new Text(data.viewCountText);
+    this.joined_date = new Text(data.joinedDateText);
     this.description = new Text(data.description);
     this.email_reveal = new NavigationEndpoint(data.onBusinessEmailRevealClickCommand);
     this.can_reveal_email = !data.signInForBusinessEmail;
     this.country = new Text(data.country);
     this.buttons = Parser.parseArray(data.actionButtons, Button);
   }
-}
 
-export default ChannelAboutFullMetadata;
\ No newline at end of file
+  /**
+   * @deprecated
+   * This will be removed in a future release.
+   * Please use {@link Channel.view_count} instead.
+   */
+  get views() {
+    return this.view_count;
+  }
+
+  /**
+   * @deprecated
+   * This will be removed in a future release.
+   * Please use {@link Channel.joined_date} instead.
+   */
+  get joined(): Text {
+    return this.joined_date;
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelAgeGate.ts b/src/parser/classes/ChannelAgeGate.ts
index f6c91f39..14d50137 100644
--- a/src/parser/classes/ChannelAgeGate.ts
+++ b/src/parser/classes/ChannelAgeGate.ts
@@ -1,12 +1,11 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import { Parser } from '../index.js';
 import Button from './Button.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-import { YTNode } from '../helpers.js';
-import type { RawNode } from '../index.js';
-
-class ChannelAgeGate extends YTNode {
+export default class ChannelAgeGate extends YTNode {
   static type = 'ChannelAgeGate';
 
   channel_title: string;
@@ -25,6 +24,4 @@ class ChannelAgeGate extends YTNode {
     this.sign_in_button = Parser.parseItem(data.signInButton, Button);
     this.secondary_text = new Text(data.secondaryText);
   }
-}
-
-export default ChannelAgeGate;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelFeaturedContent.ts b/src/parser/classes/ChannelFeaturedContent.ts
index 733a4943..e14448b0 100644
--- a/src/parser/classes/ChannelFeaturedContent.ts
+++ b/src/parser/classes/ChannelFeaturedContent.ts
@@ -1,18 +1,16 @@
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 
-class ChannelFeaturedContent extends YTNode {
+export default class ChannelFeaturedContent extends YTNode {
   static type = 'ChannelFeaturedContent';
 
   title: Text;
-  items;
+  items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.items = Parser.parseArray(data.items);
   }
-}
-
-export default ChannelFeaturedContent;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelHeaderLinks.ts b/src/parser/classes/ChannelHeaderLinks.ts
index ffff1299..b828e302 100644
--- a/src/parser/classes/ChannelHeaderLinks.ts
+++ b/src/parser/classes/ChannelHeaderLinks.ts
@@ -1,31 +1,34 @@
+import { YTNode, observe, type ObservedArray } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import { YTNode } from '../helpers.js';
 
-class HeaderLink {
+// XXX (LuanRT): This is not a real YTNode, but we treat it as one to keep things clean.
+export class HeaderLink extends YTNode {
+  static type = 'HeaderLink';
+
   endpoint: NavigationEndpoint;
   icon: Thumbnail[];
   title: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
+    super();
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.icon = Thumbnail.fromResponse(data.icon);
     this.title = new Text(data.title);
   }
 }
 
-class ChannelHeaderLinks extends YTNode {
+export default class ChannelHeaderLinks extends YTNode {
   static type = 'ChannelHeaderLinks';
 
-  primary: HeaderLink[];
-  secondary: HeaderLink[];
+  primary: ObservedArray<HeaderLink>;
+  secondary: ObservedArray<HeaderLink>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.primary = data.primaryLinks?.map((link: any) => new HeaderLink(link)) || [];
-    this.secondary = data.secondaryLinks?.map((link: any) => new HeaderLink(link)) || [];
+    this.primary = observe(data.primaryLinks?.map((link: RawNode) => new HeaderLink(link)) || []);
+    this.secondary = observe(data.secondaryLinks?.map((link: RawNode) => new HeaderLink(link)) || []);
   }
-}
-
-export default ChannelHeaderLinks;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelMetadata.ts b/src/parser/classes/ChannelMetadata.ts
index 59402324..5dc21680 100644
--- a/src/parser/classes/ChannelMetadata.ts
+++ b/src/parser/classes/ChannelMetadata.ts
@@ -1,13 +1,14 @@
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ChannelMetadata extends YTNode {
+export default class ChannelMetadata extends YTNode {
   static type = 'ChannelMetadata';
 
   title: string;
   description: string;
   url: string;
-  rss_urls: any; // Array?
+  rss_url: string;
   vanity_channel_url: string;
   external_id: string;
   is_family_safe: boolean;
@@ -18,12 +19,12 @@ class ChannelMetadata extends YTNode {
   android_appindexing_link: string;
   ios_appindexing_link: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = data.title;
     this.description = data.description;
     this.url = data.channelUrl;
-    this.rss_urls = data.rssUrl;
+    this.rss_url = data.rssUrl;
     this.vanity_channel_url = data.vanityChannelUrl;
     this.external_id = data.externalId;
     this.is_family_safe = data.isFamilySafe;
@@ -34,6 +35,4 @@ class ChannelMetadata extends YTNode {
     this.android_appindexing_link = data.androidAppindexingLink;
     this.ios_appindexing_link = data.iosAppindexingLink;
   }
-}
-
-export default ChannelMetadata;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelMobileHeader.ts b/src/parser/classes/ChannelMobileHeader.ts
index 36a7fa56..2d1af3a0 100644
--- a/src/parser/classes/ChannelMobileHeader.ts
+++ b/src/parser/classes/ChannelMobileHeader.ts
@@ -1,15 +1,14 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ChannelMobileHeader extends YTNode {
+export default class ChannelMobileHeader extends YTNode {
   static type = 'ChannelMobileHeader';
 
   title: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default ChannelMobileHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelOptions.ts b/src/parser/classes/ChannelOptions.ts
index 9f7c21f9..3b30f607 100644
--- a/src/parser/classes/ChannelOptions.ts
+++ b/src/parser/classes/ChannelOptions.ts
@@ -1,10 +1,10 @@
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
-
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ChannelOptions extends YTNode {
+export default class ChannelOptions extends YTNode {
   static type = 'ChannelOptions';
 
   avatar: Thumbnail[];
@@ -12,13 +12,11 @@ class ChannelOptions extends YTNode {
   name: string;
   links: Text[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.avatar = Thumbnail.fromResponse(data.avatar);
     this.endpoint = new NavigationEndpoint(data.avatarEndpoint);
     this.name = data.name;
-    this.links = data.links.map((link: any) => new Text(link));
+    this.links = data.links.map((link: RawNode) => new Text(link));
   }
-}
-
-export default ChannelOptions;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelSubMenu.ts b/src/parser/classes/ChannelSubMenu.ts
index 79b90418..d17b5e9b 100644
--- a/src/parser/classes/ChannelSubMenu.ts
+++ b/src/parser/classes/ChannelSubMenu.ts
@@ -1,8 +1,8 @@
-import Parser from '../index.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 
-class ChannelSubMenu extends YTNode {
+export default class ChannelSubMenu extends YTNode {
   static type = 'ChannelSubMenu';
 
   content_type_sub_menu_items: {
@@ -13,15 +13,13 @@ class ChannelSubMenu extends YTNode {
 
   sort_setting;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.content_type_sub_menu_items = data.contentTypeSubMenuItems.map((item: any) => ({
+    this.content_type_sub_menu_items = data.contentTypeSubMenuItems.map((item: RawNode) => ({
       endpoint: new NavigationEndpoint(item.navigationEndpoint || item.endpoint),
       selected: item.selected,
       title: item.title
     }));
     this.sort_setting = Parser.parseItem(data.sortSetting);
   }
-}
-
-export default ChannelSubMenu;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelThumbnailWithLink.ts b/src/parser/classes/ChannelThumbnailWithLink.ts
index d2ec2fd9..ca879ac4 100644
--- a/src/parser/classes/ChannelThumbnailWithLink.ts
+++ b/src/parser/classes/ChannelThumbnailWithLink.ts
@@ -1,20 +1,19 @@
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ChannelThumbnailWithLink extends YTNode {
+export default class ChannelThumbnailWithLink extends YTNode {
   static type = 'ChannelThumbnailWithLink';
 
   thumbnails: Thumbnail[];
   endpoint: NavigationEndpoint;
-  label: string;
+  label?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
-    this.label = data.accessibility.accessibilityData.label;
+    this.label = data.accessibility?.accessibilityData?.label;
   }
-}
-
-export default ChannelThumbnailWithLink;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChannelVideoPlayer.ts b/src/parser/classes/ChannelVideoPlayer.ts
index 0c678742..a93c875e 100644
--- a/src/parser/classes/ChannelVideoPlayer.ts
+++ b/src/parser/classes/ChannelVideoPlayer.ts
@@ -1,23 +1,40 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ChannelVideoPlayer extends YTNode {
+export default class ChannelVideoPlayer extends YTNode {
   static type = 'ChannelVideoPlayer';
 
   id: string;
   title: Text;
   description: Text;
-  views: Text;
-  published: Text;
+  view_count: Text;
+  published_time: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.videoId;
     this.title = new Text(data.title);
     this.description = new Text(data.description);
-    this.views = new Text(data.viewCountText);
-    this.published = new Text(data.publishedTimeText);
+    this.view_count = new Text(data.viewCountText);
+    this.published_time = new Text(data.publishedTimeText);
   }
-}
 
-export default ChannelVideoPlayer;
\ No newline at end of file
+  /**
+   * @deprecated
+   * This will be removed in a future release.
+   * Please use {@link ChannelVideoPlayer.view_count} instead.
+   */
+  get views(): Text {
+    return this.view_count;
+  }
+
+  /**
+   * @deprecated
+   * This will be removed in a future release.
+   * Please use {@link ChannelVideoPlayer.published_time} instead.
+   */
+  get published(): Text {
+    return this.published_time;
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/Chapter.ts b/src/parser/classes/Chapter.ts
index 21f64285..bee53820 100644
--- a/src/parser/classes/Chapter.ts
+++ b/src/parser/classes/Chapter.ts
@@ -1,21 +1,19 @@
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class Chapter extends YTNode {
+export default class Chapter extends YTNode {
   static type = 'Chapter';
 
   title: Text;
   time_range_start_millis: number;
   thumbnail: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.time_range_start_millis = data.timeRangeStartMillis;
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
   }
-}
-
-export default Chapter;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChildVideo.ts b/src/parser/classes/ChildVideo.ts
index 6d1e0f34..b650ed85 100644
--- a/src/parser/classes/ChildVideo.ts
+++ b/src/parser/classes/ChildVideo.ts
@@ -1,10 +1,10 @@
+import { timeToSeconds } from '../../utils/Utils.js';
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 
-import { timeToSeconds } from '../../utils/Utils.js';
-import { YTNode } from '../helpers.js';
-
-class ChildVideo extends YTNode {
+export default class ChildVideo extends YTNode {
   static type = 'ChildVideo';
 
   id: string;
@@ -17,18 +17,14 @@ class ChildVideo extends YTNode {
 
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.videoId;
     this.title = new Text(data.title);
-
     this.duration = {
       text: data.lengthText.simpleText,
       seconds: timeToSeconds(data.lengthText.simpleText)
     };
-
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default ChildVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChipCloud.ts b/src/parser/classes/ChipCloud.ts
index 045a6d9a..dd4e22bd 100644
--- a/src/parser/classes/ChipCloud.ts
+++ b/src/parser/classes/ChipCloud.ts
@@ -1,25 +1,21 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import ChipCloudChip from './ChipCloudChip.js';
 
-import { YTNode } from '../helpers.js';
-
-class ChipCloud extends YTNode {
+export default class ChipCloud extends YTNode {
   static type = 'ChipCloud';
 
-  chips;
-  next_button;
-  previous_button;
-  horizontal_scrollable;
+  chips: ObservedArray<ChipCloudChip>;
+  next_button: Button | null;
+  previous_button: Button | null;
+  horizontal_scrollable: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    // TODO: check this assumption that chipcloudchip is always returned
     this.chips = Parser.parseArray(data.chips, ChipCloudChip);
     this.next_button = Parser.parseItem(data.nextButton, Button);
     this.previous_button = Parser.parseItem(data.previousButton, Button);
     this.horizontal_scrollable = data.horizontalScrollable;
   }
-}
-
-export default ChipCloud;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ChipCloudChip.ts b/src/parser/classes/ChipCloudChip.ts
index 9f23cc53..66d2662a 100644
--- a/src/parser/classes/ChipCloudChip.ts
+++ b/src/parser/classes/ChipCloudChip.ts
@@ -1,21 +1,21 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ChipCloudChip extends YTNode {
+export default class ChipCloudChip extends YTNode {
   static type = 'ChipCloudChip';
 
   is_selected: boolean;
-  endpoint: NavigationEndpoint | undefined;
+  endpoint?: NavigationEndpoint;
   text: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    // TODO: is this isSelected or just selected
     this.is_selected = data.isSelected;
-    this.endpoint = data.navigationEndpoint ? new NavigationEndpoint(data.navigationEndpoint) : undefined;
+    if (Reflect.has(data, 'navigationEndpoint')) {
+      this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
+    }
     this.text = new Text(data.text).toString();
   }
-}
-
-export default ChipCloudChip;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CollaboratorInfoCardContent.ts b/src/parser/classes/CollaboratorInfoCardContent.ts
index 674d3e5d..6dd7449b 100644
--- a/src/parser/classes/CollaboratorInfoCardContent.ts
+++ b/src/parser/classes/CollaboratorInfoCardContent.ts
@@ -1,10 +1,10 @@
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
-
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class CollaboratorInfoCardContent extends YTNode {
+export default class CollaboratorInfoCardContent extends YTNode {
   static type = 'CollaboratorInfoCardContent';
 
   channel_avatar: Thumbnail[];
@@ -13,7 +13,7 @@ class CollaboratorInfoCardContent extends YTNode {
   subscriber_count: Text;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.channel_avatar = Thumbnail.fromResponse(data.channelAvatar);
     this.custom_text = new Text(data.customText);
@@ -21,6 +21,4 @@ class CollaboratorInfoCardContent extends YTNode {
     this.subscriber_count = new Text(data.subscriberCountText);
     this.endpoint = new NavigationEndpoint(data.endpoint);
   }
-}
-
-export default CollaboratorInfoCardContent;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CollageHeroImage.ts b/src/parser/classes/CollageHeroImage.ts
index 5d2fe15f..941357ca 100644
--- a/src/parser/classes/CollageHeroImage.ts
+++ b/src/parser/classes/CollageHeroImage.ts
@@ -1,8 +1,9 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class CollageHeroImage extends YTNode {
+export default class CollageHeroImage extends YTNode {
   static type = 'CollageHeroImage';
 
   left: Thumbnail[];
@@ -10,13 +11,11 @@ class CollageHeroImage extends YTNode {
   bottom_right: Thumbnail[];
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.left = Thumbnail.fromResponse(data.leftThumbnail);
     this.top_right = Thumbnail.fromResponse(data.topRightThumbnail);
     this.bottom_right = Thumbnail.fromResponse(data.bottomRightThumbnail);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default CollageHeroImage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CompactChannel.ts b/src/parser/classes/CompactChannel.ts
index 9e47259e..9f1b3604 100644
--- a/src/parser/classes/CompactChannel.ts
+++ b/src/parser/classes/CompactChannel.ts
@@ -1,11 +1,11 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import Thumbnail from './misc/Thumbnail.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Menu from './menus/Menu.js';
-import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class CompactChannel extends YTNode {
+export default class CompactChannel extends YTNode {
   static type = 'CompactChannel';
 
   title: Text;
@@ -18,7 +18,7 @@ class CompactChannel extends YTNode {
   tv_banner: Thumbnail[];
   menu: Menu | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.channel_id = data.channelId;
@@ -30,6 +30,4 @@ class CompactChannel extends YTNode {
     this.tv_banner = Thumbnail.fromResponse(data.tvBanner);
     this.menu = Parser.parseItem(data.menu, Menu);
   }
-}
-
-export default CompactChannel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CompactLink.ts b/src/parser/classes/CompactLink.ts
index 7a8c008d..e52a91fe 100644
--- a/src/parser/classes/CompactLink.ts
+++ b/src/parser/classes/CompactLink.ts
@@ -1,20 +1,19 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class CompactLink extends YTNode {
+export default class CompactLink extends YTNode {
   static type = 'CompactLink';
 
   title: string;
   endpoint: NavigationEndpoint;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title).toString();
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.style = data.style;
   }
-}
-
-export default CompactLink;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CompactMix.ts b/src/parser/classes/CompactMix.ts
index aadc6d60..e3c4c672 100644
--- a/src/parser/classes/CompactMix.ts
+++ b/src/parser/classes/CompactMix.ts
@@ -1,11 +1,10 @@
+import type { RawNode } from '../index.js';
 import Playlist from './Playlist.js';
 
-class CompactMix extends Playlist {
+export default class CompactMix extends Playlist {
   static type = 'CompactMix';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default CompactMix;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CompactPlaylist.ts b/src/parser/classes/CompactPlaylist.ts
index ec61f94f..f6514057 100644
--- a/src/parser/classes/CompactPlaylist.ts
+++ b/src/parser/classes/CompactPlaylist.ts
@@ -1,9 +1,10 @@
+import type { RawNode } from '../index.js';
 import Playlist from './Playlist.js';
 
 class CompactPlaylist extends Playlist {
   static type = 'CompactPlaylist';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
 }
diff --git a/src/parser/classes/CompactStation.ts b/src/parser/classes/CompactStation.ts
index 1a5af25f..ada41cbd 100644
--- a/src/parser/classes/CompactStation.ts
+++ b/src/parser/classes/CompactStation.ts
@@ -1,10 +1,10 @@
 import { YTNode } from '../helpers.js';
-
+import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class CompactStation extends YTNode {
+export default class CompactStation extends YTNode {
   static type = 'CompactStation';
 
   title: Text;
@@ -13,15 +13,12 @@ class CompactStation extends YTNode {
   endpoint: NavigationEndpoint;
   thumbnail: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.title = new Text(data.title);
     this.description = new Text(data.description);
     this.video_count = new Text(data.videoCountText);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
   }
-}
-
-export default CompactStation;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CompactVideo.ts b/src/parser/classes/CompactVideo.ts
index 4f4292b7..39c16db7 100644
--- a/src/parser/classes/CompactVideo.ts
+++ b/src/parser/classes/CompactVideo.ts
@@ -1,6 +1,6 @@
 import { timeToSeconds } from '../../utils/Utils.js';
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray, type SuperParsedResult } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Menu from './menus/Menu.js';
 import MetadataBadge from './MetadataBadge.js';
 import Author from './misc/Author.js';
@@ -8,12 +8,12 @@ import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class CompactVideo extends YTNode {
+export default class CompactVideo extends YTNode {
   static type = 'CompactVideo';
 
   id: string;
   thumbnails: Thumbnail[];
-  rich_thumbnail;
+  rich_thumbnail?: SuperParsedResult<YTNode>;
   title: Text;
   author: Author;
   view_count: Text;
@@ -26,7 +26,7 @@ class CompactVideo extends YTNode {
     seconds: number;
   };
 
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
   endpoint: NavigationEndpoint;
   menu: Menu | null;
 
@@ -34,7 +34,11 @@ class CompactVideo extends YTNode {
     super();
     this.id = data.videoId;
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail) || null;
-    this.rich_thumbnail = data.richThumbnail && Parser.parse(data.richThumbnail);
+
+    if (Reflect.has(data, 'richThumbnail')) {
+      this.rich_thumbnail = Parser.parse(data.richThumbnail);
+    }
+
     this.title = new Text(data.title);
     this.author = new Author(data.longBylineText, data.ownerBadges, data.channelThumbnail);
     this.view_count = new Text(data.viewCountText);
@@ -74,6 +78,4 @@ class CompactVideo extends YTNode {
   get is_premiere(): boolean {
     return this.badges.some((badge) => badge.style === 'PREMIERE');
   }
-}
-
-export default CompactVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ConfirmDialog.ts b/src/parser/classes/ConfirmDialog.ts
index 58238491..d33265de 100644
--- a/src/parser/classes/ConfirmDialog.ts
+++ b/src/parser/classes/ConfirmDialog.ts
@@ -1,10 +1,9 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Button from './Button.js';
-
 import { YTNode } from '../helpers.js';
 
-class ConfirmDialog extends YTNode {
+export default class ConfirmDialog extends YTNode {
   static type = 'ConfirmDialog';
 
   title: Text;
@@ -12,13 +11,11 @@ class ConfirmDialog extends YTNode {
   cancel_button: Button | null;
   dialog_messages: Text[];
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.confirm_button = Parser.parseItem(data.confirmButton, Button);
     this.cancel_button = Parser.parseItem(data.cancelButton, Button);
-    this.dialog_messages = data.dialogMessages.map((txt: any) => new Text(txt));
+    this.dialog_messages = data.dialogMessages.map((txt: RawNode) => new Text(txt));
   }
-}
-
-export default ConfirmDialog;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ContinuationItem.ts b/src/parser/classes/ContinuationItem.ts
index bbe60a1c..1f6593b8 100644
--- a/src/parser/classes/ContinuationItem.ts
+++ b/src/parser/classes/ContinuationItem.ts
@@ -1,24 +1,23 @@
-import Parser from '../index.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 
-class ContinuationItem extends YTNode {
+export default class ContinuationItem extends YTNode {
   static type = 'ContinuationItem';
 
   trigger: string;
-  button?;
+  button?: Button | null;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.trigger = data.trigger;
 
-    if (data.button) {
-      this.button = Parser.parseItem(data.button);
+    if (Reflect.has(data, 'button')) {
+      this.button = Parser.parseItem(data.button, Button);
     }
 
     this.endpoint = new NavigationEndpoint(data.continuationEndpoint);
   }
-}
-
-export default ContinuationItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ConversationBar.ts b/src/parser/classes/ConversationBar.ts
index 201ef7b1..2ebfff78 100644
--- a/src/parser/classes/ConversationBar.ts
+++ b/src/parser/classes/ConversationBar.ts
@@ -1,8 +1,8 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Message from './Message.js';
 
-class ConversationBar extends YTNode {
+export default class ConversationBar extends YTNode {
   static type = 'ConversationBar';
 
   availability_message: Message | null;
@@ -11,6 +11,4 @@ class ConversationBar extends YTNode {
     super();
     this.availability_message = Parser.parseItem(data.availabilityMessage, Message);
   }
-}
-
-export default ConversationBar;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CopyLink.ts b/src/parser/classes/CopyLink.ts
index 96163fef..89bc8d65 100644
--- a/src/parser/classes/CopyLink.ts
+++ b/src/parser/classes/CopyLink.ts
@@ -1,20 +1,18 @@
-import Parser from '../index.js';
-import Button from './Button.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
 
-class CopyLink extends YTNode {
+export default class CopyLink extends YTNode {
   static type = 'CopyLink';
 
   copy_button: Button | null;
   short_url: string;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.copy_button = Parser.parseItem(data.copyButton, Button);
     this.short_url = data.shortUrl;
     this.style = data.style;
   }
-}
-
-export default CopyLink;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/CreatePlaylistDialog.ts b/src/parser/classes/CreatePlaylistDialog.ts
index a4bf1c20..4332b380 100644
--- a/src/parser/classes/CreatePlaylistDialog.ts
+++ b/src/parser/classes/CreatePlaylistDialog.ts
@@ -1,27 +1,24 @@
-import Parser from '../index.js';
-import { ObservedArray, YTNode } from '../helpers.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import Dropdown from './Dropdown.js';
-import DropdownItem from './DropdownItem.js';
 import Text from './misc/Text.js';
 
-class CreatePlaylistDialog extends YTNode {
+export default class CreatePlaylistDialog extends YTNode {
   static type = 'CreatePlaylistDialog';
 
   title: string;
   title_placeholder: string;
-  privacy_option: ObservedArray<DropdownItem> | null;
+  privacy_option: Dropdown | null;
   cancel_button: Button | null;
   create_button: Button | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.dialogTitle).toString();
     this.title_placeholder = data.titlePlaceholder || '';
-    this.privacy_option = Parser.parseItem(data.privacyOption, Dropdown)?.entries || null;
+    this.privacy_option = Parser.parseItem(data.privacyOption, Dropdown);
     this.create_button = Parser.parseItem(data.cancelButton, Button);
     this.cancel_button = Parser.parseItem(data.cancelButton, Button);
   }
-}
-
-export default CreatePlaylistDialog;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/DecoratedPlayerBar.ts b/src/parser/classes/DecoratedPlayerBar.ts
index 509b2725..5a2781cf 100644
--- a/src/parser/classes/DecoratedPlayerBar.ts
+++ b/src/parser/classes/DecoratedPlayerBar.ts
@@ -1,10 +1,10 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Parser from '../index.js';
 import Button from './Button.js';
 import MultiMarkersPlayerBar from './MultiMarkersPlayerBar.js';
-import type { RawNode } from '../index.js';
 
-class DecoratedPlayerBar extends YTNode {
+export default class DecoratedPlayerBar extends YTNode {
   static type = 'DecoratedPlayerBar';
 
   player_bar: MultiMarkersPlayerBar | null;
@@ -15,6 +15,4 @@ class DecoratedPlayerBar extends YTNode {
     this.player_bar = Parser.parseItem(data.playerBar, MultiMarkersPlayerBar);
     this.player_bar_action_button = Parser.parseItem(data.playerBarActionButton, Button);
   }
-}
-
-export default DecoratedPlayerBar;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/DefaultPromoPanel.ts b/src/parser/classes/DefaultPromoPanel.ts
index 5973f781..db85431c 100644
--- a/src/parser/classes/DefaultPromoPanel.ts
+++ b/src/parser/classes/DefaultPromoPanel.ts
@@ -1,17 +1,16 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
-
-import Text from './misc/Text.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class DefaultPromoPanel extends YTNode {
+export default class DefaultPromoPanel extends YTNode {
   static type = 'DefaultPromoPanel';
 
   title: Text;
   description: Text;
   endpoint: NavigationEndpoint;
-  large_form_factor_background_thumbnail;
-  small_form_factor_background_thumbnail;
+  large_form_factor_background_thumbnail: YTNode;
+  small_form_factor_background_thumbnail: YTNode;
   scrim_color_values: number[];
   min_panel_display_duration_ms: number;
   min_video_play_duration_ms: number;
@@ -19,7 +18,7 @@ class DefaultPromoPanel extends YTNode {
   metadata_order: string;
   panel_layout: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.description = new Text(data.description);
@@ -33,6 +32,4 @@ class DefaultPromoPanel extends YTNode {
     this.metadata_order = data.metadataOrder;
     this.panel_layout = data.panelLayout;
   }
-}
-
-export default DefaultPromoPanel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/DidYouMean.ts b/src/parser/classes/DidYouMean.ts
index 4c02a4dd..85e1b6a1 100644
--- a/src/parser/classes/DidYouMean.ts
+++ b/src/parser/classes/DidYouMean.ts
@@ -1,20 +1,19 @@
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class DidYouMean extends YTNode {
+export default class DidYouMean extends YTNode {
   static type = 'DidYouMean';
 
   text: string;
   corrected_query: Text;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.didYouMean).toString();
     this.corrected_query = new Text(data.correctedQuery);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint || data.correctedQueryEndpoint);
   }
-}
-
-export default DidYouMean;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/DownloadButton.ts b/src/parser/classes/DownloadButton.ts
index 3b6ab0d6..ea868feb 100644
--- a/src/parser/classes/DownloadButton.ts
+++ b/src/parser/classes/DownloadButton.ts
@@ -1,7 +1,8 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class DownloadButton extends YTNode {
+export default class DownloadButton extends YTNode {
   static type = 'DownloadButton';
 
   style: string;
@@ -9,13 +10,11 @@ class DownloadButton extends YTNode {
   endpoint: NavigationEndpoint;
   target_id: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.style = data.style;
     this.size = data.size;
     this.endpoint = new NavigationEndpoint(data.command);
     this.target_id = data.targetId;
   }
-}
-
-export default DownloadButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Dropdown.ts b/src/parser/classes/Dropdown.ts
index d7a22fef..325b6e32 100644
--- a/src/parser/classes/Dropdown.ts
+++ b/src/parser/classes/Dropdown.ts
@@ -1,19 +1,16 @@
-import Parser from '../index.js';
-import { ObservedArray, YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import DropdownItem from './DropdownItem.js';
 
-class Dropdown extends YTNode {
+export default class Dropdown extends YTNode {
   static type = 'Dropdown';
 
   label: string;
   entries: ObservedArray<DropdownItem>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.label = data.label || '';
     this.entries = Parser.parseArray(data.entries, DropdownItem);
   }
-}
-
-export default Dropdown;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/DropdownItem.ts b/src/parser/classes/DropdownItem.ts
index 4a2d0337..8e052dd2 100644
--- a/src/parser/classes/DropdownItem.ts
+++ b/src/parser/classes/DropdownItem.ts
@@ -1,41 +1,39 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class DropdownItem extends YTNode {
+export default class DropdownItem extends YTNode {
   static type = 'DropdownItem';
 
   label: string;
   selected: boolean;
   value?: number | string;
   icon_type?: string;
-  description?: string;
+  description?: Text;
   endpoint?: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.label = new Text(data.label).toString();
     this.selected = !!data.isSelected;
 
-    if (data.int32Value) {
+    if (Reflect.has(data, 'int32Value')) {
       this.value = data.int32Value;
     } else if (data.stringValue) {
       this.value = data.stringValue;
     }
 
-    if (data.onSelectCommand?.browseEndpoint) {
+    if (Reflect.has(data, 'onSelectCommand')) {
       this.endpoint = new NavigationEndpoint(data.onSelectCommand);
     }
 
-    if (data.icon?.iconType) {
+    if (Reflect.has(data, 'icon')) {
       this.icon_type = data.icon?.iconType;
     }
 
-    if (data.descriptionText) {
-      this.description = new Text(data.descriptionText).toString();
+    if (Reflect.has(data, 'descriptionText')) {
+      this.description = new Text(data.descriptionText);
     }
   }
-}
-
-export default DropdownItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Element.ts b/src/parser/classes/Element.ts
index b8dd67e2..16274a00 100644
--- a/src/parser/classes/Element.ts
+++ b/src/parser/classes/Element.ts
@@ -1,15 +1,14 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import ChildElement from './misc/ChildElement.js';
+import { type ObservedArray, YTNode, observe } from '../helpers.js';
 
-import { YTNode } from '../helpers.js';
-
-class Element extends YTNode {
+export default class Element extends YTNode {
   static type = 'Element';
 
-  model;
-  child_elements?: ChildElement[];
+  model?: YTNode;
+  child_elements?: ObservedArray<ChildElement>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     if (Reflect.has(data, 'elementRenderer')) {
@@ -17,12 +16,11 @@ class Element extends YTNode {
     }
 
     const type = data.newElement.type.componentType;
+
     this.model = Parser.parseItem(type?.model);
 
-    if (data.newElement?.childElements) {
-      this.child_elements = data.newElement?.childElements?.map((el: any) => new ChildElement(el)) || null;
+    if (Reflect.has(data, 'newElement') && Reflect.has(data.newElement, 'childElements')) {
+      this.child_elements = observe(data.newElement.childElements?.map((el: RawNode) => new ChildElement(el)) || []);
     }
   }
-}
-
-export default Element;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EmergencyOnebox.ts b/src/parser/classes/EmergencyOnebox.ts
index f08218aa..f9244f9c 100644
--- a/src/parser/classes/EmergencyOnebox.ts
+++ b/src/parser/classes/EmergencyOnebox.ts
@@ -1,20 +1,19 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
+import Menu from './menus/Menu.js';
 import Text from './misc/Text.js';
 
-class EmergencyOnebox extends YTNode {
+export default class EmergencyOnebox extends YTNode {
   static type = 'EmergencyOnebox';
 
   title: Text;
-  first_option;
-  menu;
+  first_option: YTNode;
+  menu: Menu | null;
 
   constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.first_option = Parser.parseItem(data.firstOption);
-    this.menu = Parser.parseItem(data.menu);
+    this.menu = Parser.parseItem(data.menu, Menu);
   }
-}
-
-export default EmergencyOnebox;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EmojiPickerCategory.ts b/src/parser/classes/EmojiPickerCategory.ts
index 78215c8e..2574cb85 100644
--- a/src/parser/classes/EmojiPickerCategory.ts
+++ b/src/parser/classes/EmojiPickerCategory.ts
@@ -1,7 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import { type RawNode } from '../index.js';
 
-class EmojiPickerCategory extends YTNode {
+export default class EmojiPickerCategory extends YTNode {
   static type = 'EmojiPickerCategory';
 
   category_id: string;
@@ -10,7 +11,7 @@ class EmojiPickerCategory extends YTNode {
   image_loading_lazy: boolean;
   category_type: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.category_id = data.categoryId;
     this.title = new Text(data.title);
@@ -18,6 +19,4 @@ class EmojiPickerCategory extends YTNode {
     this.image_loading_lazy = !!data.imageLoadingLazy;
     this.category_type = data.categoryType;
   }
-}
-
-export default EmojiPickerCategory;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EmojiPickerCategoryButton.ts b/src/parser/classes/EmojiPickerCategoryButton.ts
index 7c417bda..6b9150dc 100644
--- a/src/parser/classes/EmojiPickerCategoryButton.ts
+++ b/src/parser/classes/EmojiPickerCategoryButton.ts
@@ -1,18 +1,21 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class EmojiPickerCategoryButton extends YTNode {
+export default class EmojiPickerCategoryButton extends YTNode {
   static type = 'EmojiPickerCategoryButton';
 
   category_id: string;
-  icon_type: string;
+  icon_type?: string;
   tooltip: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.category_id = data.categoryId;
-    this.icon_type = data.icon?.iconType;
+
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon?.iconType;
+    }
+
     this.tooltip = data.tooltip;
   }
-}
-
-export default EmojiPickerCategoryButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EmojiPickerUpsellCategory.ts b/src/parser/classes/EmojiPickerUpsellCategory.ts
index c14a317f..eaa31f62 100644
--- a/src/parser/classes/EmojiPickerUpsellCategory.ts
+++ b/src/parser/classes/EmojiPickerUpsellCategory.ts
@@ -1,8 +1,9 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class EmojiPickerUpsellCategory extends YTNode {
+export default class EmojiPickerUpsellCategory extends YTNode {
   static type = 'EmojiPickerUpsellCategory';
 
   category_id: string;
@@ -12,7 +13,7 @@ class EmojiPickerUpsellCategory extends YTNode {
   endpoint: NavigationEndpoint;
   emoji_ids: string[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.category_id = data.categoryId;
     this.title = new Text(data.title);
@@ -21,6 +22,4 @@ class EmojiPickerUpsellCategory extends YTNode {
     this.endpoint = new NavigationEndpoint(data.command);
     this.emoji_ids = data.emojiIds;
   }
-}
-
-export default EmojiPickerUpsellCategory;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EndScreenPlaylist.ts b/src/parser/classes/EndScreenPlaylist.ts
index e0311cb5..9dd81d46 100644
--- a/src/parser/classes/EndScreenPlaylist.ts
+++ b/src/parser/classes/EndScreenPlaylist.ts
@@ -2,8 +2,9 @@ import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import { type RawNode } from '../index.js';
 
-class EndScreenPlaylist extends YTNode {
+export default class EndScreenPlaylist extends YTNode {
   static type = 'EndScreenPlaylist';
 
   id: string;
@@ -13,7 +14,7 @@ class EndScreenPlaylist extends YTNode {
   thumbnails: Thumbnail[];
   video_count: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.playlistId;
     this.title = new Text(data.title);
@@ -22,6 +23,4 @@ class EndScreenPlaylist extends YTNode {
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.video_count = new Text(data.videoCountText);
   }
-}
-
-export default EndScreenPlaylist;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EndScreenVideo.ts b/src/parser/classes/EndScreenVideo.ts
index 988f739e..bd7da24a 100644
--- a/src/parser/classes/EndScreenVideo.ts
+++ b/src/parser/classes/EndScreenVideo.ts
@@ -1,22 +1,21 @@
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Author from './misc/Author.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class EndScreenVideo extends YTNode {
+export default class EndScreenVideo extends YTNode {
   static type = 'EndScreenVideo';
 
   id: string;
   title: Text;
   thumbnails: Thumbnail[];
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
   author: Author;
   endpoint: NavigationEndpoint;
   short_view_count: Text;
-  badges;
-
+  badges: ObservedArray<YTNode>;
   duration: {
     text: string;
     seconds: number;
@@ -31,12 +30,10 @@ class EndScreenVideo extends YTNode {
     this.author = new Author(data.shortBylineText, data.ownerBadges);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.short_view_count = new Text(data.shortViewCountText);
-    this.badges = Parser.parse(data.badges);
+    this.badges = Parser.parseArray(data.badges);
     this.duration = {
       text: new Text(data.lengthText).toString(),
       seconds: data.lengthInSeconds
     };
   }
-}
-
-export default EndScreenVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Endscreen.ts b/src/parser/classes/Endscreen.ts
index 94d09e5d..03267ece 100644
--- a/src/parser/classes/Endscreen.ts
+++ b/src/parser/classes/Endscreen.ts
@@ -1,17 +1,15 @@
 import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class Endscreen extends YTNode {
+export default class Endscreen extends YTNode {
   static type = 'Endscreen';
 
-  elements;
-  start_ms: string; // Or number?
+  elements: ObservedArray<YTNode>;
+  start_ms: string;
 
   constructor(data: any) {
     super();
     this.elements = Parser.parseArray(data.elements);
     this.start_ms = data.startMs;
   }
-}
-
-export default Endscreen;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/EndscreenElement.ts b/src/parser/classes/EndscreenElement.ts
index 605146f4..3bf96ad7 100644
--- a/src/parser/classes/EndscreenElement.ts
+++ b/src/parser/classes/EndscreenElement.ts
@@ -1,66 +1,69 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class EndscreenElement extends YTNode {
+export default class EndscreenElement extends YTNode {
   static type = 'EndscreenElement';
 
-  style;
-  title;
-  endpoint;
-  image;
-  icon;
-  metadata;
-  call_to_action;
-  hovercard_button;
-  is_subscribe;
-  playlist_length;
-  thumbnail_overlays;
-  left;
-  top;
-  width;
-  aspect_ratio;
-  start_ms;
-  end_ms;
+  style: string;
+  title: Text;
+  endpoint: NavigationEndpoint;
+  image?: Thumbnail[];
+  icon?: Thumbnail[];
+  metadata?: Text;
+  call_to_action?: Text;
+  hovercard_button?: YTNode;
+  is_subscribe?: boolean;
+  playlist_length?: Text;
+  thumbnail_overlays?: ObservedArray<YTNode>;
+  left: number;
+  top: number;
+  width: number;
+  aspect_ratio: number;
+  start_ms: number;
+  end_ms: number;
   id: string;
-  constructor(data: any) {
-    super();
 
-    this.style = `${data.style}`;
+  constructor(data: RawNode) {
+    super();
+    this.style = data.style;
     this.title = new Text(data.title);
     this.endpoint = new NavigationEndpoint(data.endpoint);
 
-    if (data.image) {
+    if (Reflect.has(data, 'image')) {
       this.image = Thumbnail.fromResponse(data.image);
     }
 
-    if (data.icon) {
+    if (Reflect.has(data, 'icon')) {
       this.icon = Thumbnail.fromResponse(data.icon);
     }
 
-    if (data.metadata) {
+    if (Reflect.has(data, 'metadata')) {
       this.metadata = new Text(data.metadata);
     }
 
-    if (data.callToAction) {
+    if (Reflect.has(data, 'callToAction')) {
       this.call_to_action = new Text(data.callToAction);
     }
 
-    if (data.hovercardButton) {
+    if (Reflect.has(data, 'hovercardButton')) {
       this.hovercard_button = Parser.parseItem(data.hovercardButton);
     }
 
-    if (data.isSubscribe) {
+    if (Reflect.has(data, 'isSubscribe')) {
       this.is_subscribe = !!data.isSubscribe;
     }
 
-    if (data.playlistLength) {
+    if (Reflect.has(data, 'playlistLength')) {
       this.playlist_length = new Text(data.playlistLength);
     }
 
-    this.thumbnail_overlays = data.thumbnailOverlays ? Parser.parseArray(data.thumbnailOverlays) : undefined;
+    if (Reflect.has(data, 'thumbnailOverlays')) {
+      this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
+    }
+
     this.left = parseFloat(data.left);
     this.width = parseFloat(data.width);
     this.top = parseFloat(data.top);
@@ -69,6 +72,4 @@ class EndscreenElement extends YTNode {
     this.end_ms = parseFloat(data.endMs);
     this.id = data.id;
   }
-}
-
-export default EndscreenElement;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ExpandableMetadata.ts b/src/parser/classes/ExpandableMetadata.ts
index cad46f5b..ea5442b5 100644
--- a/src/parser/classes/ExpandableMetadata.ts
+++ b/src/parser/classes/ExpandableMetadata.ts
@@ -1,17 +1,14 @@
-import Parser from '../index.js';
-
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import HorizontalCardList from './HorizontalCardList.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-import Button from './Button.js';
-import HorizontalCardList from './HorizontalCardList.js';
-
-import { YTNode } from '../helpers.js';
-
-class ExpandableMetadata extends YTNode {
+export default class ExpandableMetadata extends YTNode {
   static type = 'ExpandableMetadata';
 
-  header: {
+  header?: {
     collapsed_title: Text;
     collapsed_thumbnail: Thumbnail[];
     collapsed_label: Text;
@@ -22,20 +19,20 @@ class ExpandableMetadata extends YTNode {
   expand_button: Button | null;
   collapse_button: Button | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
-    this.header = {
-      collapsed_title: new Text(data.header.collapsedTitle),
-      collapsed_thumbnail: Thumbnail.fromResponse(data.header.collapsedThumbnail),
-      collapsed_label: new Text(data.header.collapsedLabel),
-      expanded_title: new Text(data.header.expandedTitle)
-    };
+    if (Reflect.has(data, 'header')) {
+      this.header = {
+        collapsed_title: new Text(data.header.collapsedTitle),
+        collapsed_thumbnail: Thumbnail.fromResponse(data.header.collapsedThumbnail),
+        collapsed_label: new Text(data.header.collapsedLabel),
+        expanded_title: new Text(data.header.expandedTitle)
+      };
+    }
 
     this.expanded_content = Parser.parseItem(data.expandedContent, HorizontalCardList);
     this.expand_button = Parser.parseItem(data.expandButton, Button);
     this.collapse_button = Parser.parseItem(data.collapseButton, Button);
   }
-}
-
-export default ExpandableMetadata;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ExpandableTab.ts b/src/parser/classes/ExpandableTab.ts
index 7890e586..c20a5a71 100644
--- a/src/parser/classes/ExpandableTab.ts
+++ b/src/parser/classes/ExpandableTab.ts
@@ -1,22 +1,20 @@
-import Parser from '../index.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 
-class ExpandableTab extends YTNode {
+export default class ExpandableTab extends YTNode {
   static type = 'ExpandableTab';
 
   title: string;
   endpoint: NavigationEndpoint;
   selected: boolean;
-  content;
+  content: YTNode;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = data.title;
     this.endpoint = new NavigationEndpoint(data.endpoint);
-    this.selected = data.selected; // If this.selected then we may have content else we do not
-    this.content = data.content ? Parser.parseItem(data.content) : null;
+    this.selected = data.selected;
+    this.content = Parser.parseItem(data.content);
   }
-}
-
-export default ExpandableTab;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ExpandedShelfContents.ts b/src/parser/classes/ExpandedShelfContents.ts
index 9ebe22a9..02ba5548 100644
--- a/src/parser/classes/ExpandedShelfContents.ts
+++ b/src/parser/classes/ExpandedShelfContents.ts
@@ -1,20 +1,18 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class ExpandedShelfContents extends YTNode {
+export default class ExpandedShelfContents extends YTNode {
   static type = 'ExpandedShelfContents';
 
-  items;
+  items: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default ExpandedShelfContents;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/FeedFilterChipBar.ts b/src/parser/classes/FeedFilterChipBar.ts
index dca16bd3..570d8d8b 100644
--- a/src/parser/classes/FeedFilterChipBar.ts
+++ b/src/parser/classes/FeedFilterChipBar.ts
@@ -1,16 +1,14 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import ChipCloudChip from './ChipCloudChip.js';
 
-class FeedFilterChipBar extends YTNode {
+export default class FeedFilterChipBar extends YTNode {
   static type = 'FeedFilterChipBar';
 
-  contents;
+  contents: ObservedArray<ChipCloudChip>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.contents = Parser.parseArray<ChipCloudChip>(data.contents, ChipCloudChip);
+    this.contents = Parser.parseArray(data.contents, ChipCloudChip);
   }
-}
-
-export default FeedFilterChipBar;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/FeedTabbedHeader.ts b/src/parser/classes/FeedTabbedHeader.ts
index c07473a5..f081eba8 100644
--- a/src/parser/classes/FeedTabbedHeader.ts
+++ b/src/parser/classes/FeedTabbedHeader.ts
@@ -1,15 +1,14 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class FeedTabbedHeader extends YTNode {
+export default class FeedTabbedHeader extends YTNode {
   static type = 'FeedTabbedHeader';
 
   title: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default FeedTabbedHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GameCard.ts b/src/parser/classes/GameCard.ts
index 6abf53c5..e35ede27 100644
--- a/src/parser/classes/GameCard.ts
+++ b/src/parser/classes/GameCard.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class GameCard extends YTNode {
+export default class GameCard extends YTNode {
   static type = 'GameCard';
 
-  game;
+  game: YTNode;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.game = Parser.parseItem(data.game);
   }
-}
-
-export default GameCard;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GameDetails.ts b/src/parser/classes/GameDetails.ts
index b3bb80ad..2b185b30 100644
--- a/src/parser/classes/GameDetails.ts
+++ b/src/parser/classes/GameDetails.ts
@@ -1,10 +1,10 @@
 import { YTNode } from '../helpers.js';
-
+import { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class GameDetails extends YTNode {
+export default class GameDetails extends YTNode {
   static type = 'GameDetails';
 
   title: Text;
@@ -13,14 +13,12 @@ class GameDetails extends YTNode {
   endpoint: NavigationEndpoint;
   is_official_box_art: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.box_art = Thumbnail.fromResponse(data.boxArt);
     this.box_art_overlay_text = new Text(data.boxArtOverlayText);
     this.endpoint = new NavigationEndpoint(data.endpoint);
-    this.is_official_box_art = data.isOfficialBoxArt;
+    this.is_official_box_art = !!data.isOfficialBoxArt;
   }
-}
-
-export default GameDetails;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Grid.ts b/src/parser/classes/Grid.ts
index 998f2803..4e440dc8 100644
--- a/src/parser/classes/Grid.ts
+++ b/src/parser/classes/Grid.ts
@@ -1,44 +1,42 @@
-import Parser, { RawNode } from '../index.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class Grid extends YTNode {
+export default class Grid extends YTNode {
   static type = 'Grid';
 
-  items;
+  items: ObservedArray<YTNode>;
   is_collapsible?: boolean;
   visible_row_count?: string;
   target_id?: string;
   continuation: string | null;
-  header?;
+  header?: YTNode;
 
   constructor(data: RawNode) {
     super();
 
     this.items = Parser.parseArray(data.items);
 
-    if (data.header) {
+    if (Reflect.has(data, 'header')) {
       this.header = Parser.parseItem(data.header);
     }
 
-    if (data.isCollapsible) {
+    if (Reflect.has(data, 'isCollapsible')) {
       this.is_collapsible = data.isCollapsible;
     }
 
-    if (data.visibleRowCount) {
+    if (Reflect.has(data, 'visibleRowCount')) {
       this.visible_row_count = data.visibleRowCount;
     }
 
-    if (data.targetId) {
+    if (Reflect.has(data, 'targetId')) {
       this.target_id = data.targetId;
     }
 
     this.continuation = data.continuations?.[0]?.nextContinuationData?.continuation || null;
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default Grid;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GridChannel.ts b/src/parser/classes/GridChannel.ts
index 7c083cc7..f5c6ba45 100644
--- a/src/parser/classes/GridChannel.ts
+++ b/src/parser/classes/GridChannel.ts
@@ -1,10 +1,10 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Author from './misc/Author.js';
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class GridChannel extends YTNode {
+export default class GridChannel extends YTNode {
   static type = 'GridChannel';
 
   id: string;
@@ -12,7 +12,7 @@ class GridChannel extends YTNode {
   subscribers: Text;
   video_count: Text;
   endpoint: NavigationEndpoint;
-  subscribe_button;
+  subscribe_button: YTNode;
 
   constructor(data: RawNode) {
     super();
@@ -28,6 +28,4 @@ class GridChannel extends YTNode {
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.subscribe_button = Parser.parseItem(data.subscribeButton);
   }
-}
-
-export default GridChannel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GridHeader.ts b/src/parser/classes/GridHeader.ts
index 7a128bfc..8da3077e 100644
--- a/src/parser/classes/GridHeader.ts
+++ b/src/parser/classes/GridHeader.ts
@@ -1,15 +1,14 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class GridHeader extends YTNode {
+export default class GridHeader extends YTNode {
   static type = 'GridHeader';
 
   title: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default GridHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GridMix.ts b/src/parser/classes/GridMix.ts
index fdd609e6..f906687c 100644
--- a/src/parser/classes/GridMix.ts
+++ b/src/parser/classes/GridMix.ts
@@ -1,10 +1,10 @@
-import Text from './misc/Text.js';
-import Parser from '../index.js';
-import Thumbnail from './misc/Thumbnail.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
-import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class GridMix extends YTNode {
+export default class GridMix extends YTNode {
   static type = 'GridMix';
 
   id: string;
@@ -15,9 +15,9 @@ class GridMix extends YTNode {
   video_count_short: Text;
   endpoint: NavigationEndpoint;
   secondary_endpoint: NavigationEndpoint;
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.playlistId;
     this.title = new Text(data.title);
@@ -33,6 +33,4 @@ class GridMix extends YTNode {
     this.secondary_endpoint = new NavigationEndpoint(data.secondaryNavigationEndpoint);
     this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
   }
-}
-
-export default GridMix;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GridMovie.ts b/src/parser/classes/GridMovie.ts
index f2b160a6..12881a1f 100644
--- a/src/parser/classes/GridMovie.ts
+++ b/src/parser/classes/GridMovie.ts
@@ -1,11 +1,11 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import MetadataBadge from './MetadataBadge.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import { YTNode } from '../helpers.js';
-import MetadataBadge from './MetadataBadge.js';
 
-class GridMovie extends YTNode {
+export default class GridMovie extends YTNode {
   static type = 'GridMovie';
 
   id: string;
@@ -13,22 +13,20 @@ class GridMovie extends YTNode {
   thumbnails: Thumbnail[];
   duration: Text | null;
   endpoint: NavigationEndpoint;
-  badges: MetadataBadge[];
+  badges: ObservedArray<MetadataBadge>;
   metadata: Text;
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    const length_alt = data.thumbnailOverlays.find((overlay: any) => overlay.hasOwnProperty('thumbnailOverlayTimeStatusRenderer'))?.thumbnailOverlayTimeStatusRenderer;
+    const length_alt = data.thumbnailOverlays.find((overlay: RawNode) => overlay.hasOwnProperty('thumbnailOverlayTimeStatusRenderer'))?.thumbnailOverlayTimeStatusRenderer;
     this.id = data.videoId;
     this.title = new Text(data.title);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.duration = data.lengthText ? new Text(data.lengthText) : length_alt?.text ? new Text(length_alt.text) : null;
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
-    this.badges = Parser.parseArray<MetadataBadge>(data.badges, MetadataBadge);
+    this.badges = Parser.parseArray(data.badges, MetadataBadge);
     this.metadata = new Text(data.metadata);
     this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
   }
-}
-
-export default GridMovie;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GridPlaylist.ts b/src/parser/classes/GridPlaylist.ts
index dceea463..1a7f0bd6 100644
--- a/src/parser/classes/GridPlaylist.ts
+++ b/src/parser/classes/GridPlaylist.ts
@@ -1,17 +1,17 @@
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Author from './misc/Author.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class GridPlaylist extends YTNode {
+export default class GridPlaylist extends YTNode {
   static type = 'GridPlaylist';
 
   id: string;
   title: Text;
   author?: Author;
-  badges;
+  badges: ObservedArray<YTNode>;
   endpoint: NavigationEndpoint;
   view_playlist: Text;
   thumbnails: Thumbnail[];
@@ -25,7 +25,7 @@ class GridPlaylist extends YTNode {
     this.id = data.playlistId;
     this.title = new Text(data.title);
 
-    if (data.shortBylineText) {
+    if (Reflect.has(data, 'shortBylineText')) {
       this.author = new Author(data.shortBylineText, data.ownerBadges);
     }
 
@@ -38,6 +38,4 @@ class GridPlaylist extends YTNode {
     this.video_count = new Text(data.thumbnailText);
     this.video_count_short = new Text(data.videoCountShortText);
   }
-}
-
-export default GridPlaylist;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/GridShow.ts b/src/parser/classes/GridShow.ts
index 0169b1c7..c0288596 100644
--- a/src/parser/classes/GridShow.ts
+++ b/src/parser/classes/GridShow.ts
@@ -1,5 +1,5 @@
-import { ObservedArray, YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Parser from '../parser.js';
 import Author from './misc/Author.js';
 import Text from './misc/Text.js';
diff --git a/src/parser/classes/GridVideo.ts b/src/parser/classes/GridVideo.ts
index 0b21575f..86256201 100644
--- a/src/parser/classes/GridVideo.ts
+++ b/src/parser/classes/GridVideo.ts
@@ -1,12 +1,10 @@
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Menu from './menus/Menu.js';
+import Author from './misc/Author.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import Author from './misc/Author.js';
-
-import Menu from './menus/Menu.js';
-
-import { YTNode } from '../helpers.js';
 
 export default class GridVideo extends YTNode {
   static type = 'GridVideo';
@@ -14,8 +12,8 @@ export default class GridVideo extends YTNode {
   id: string;
   title: Text;
   thumbnails: Thumbnail[];
-  thumbnail_overlays;
-  rich_thumbnail;
+  thumbnail_overlays: ObservedArray<YTNode>;
+  rich_thumbnail: YTNode;
   published: Text;
   duration: Text | null;
   author: Author;
@@ -23,20 +21,20 @@ export default class GridVideo extends YTNode {
   short_view_count: Text;
   endpoint: NavigationEndpoint;
   menu: Menu | null;
-  buttons?;
+  buttons?: ObservedArray<YTNode>;
   upcoming?: Date;
   upcoming_text?: Text;
   is_reminder_set?: boolean;
 
   constructor(data: RawNode) {
     super();
-    const length_alt = data.thumbnailOverlays.find((overlay: any) => overlay.hasOwnProperty('thumbnailOverlayTimeStatusRenderer'))?.thumbnailOverlayTimeStatusRenderer;
+    const length_alt = data.thumbnailOverlays.find((overlay: RawNode) => overlay.hasOwnProperty('thumbnailOverlayTimeStatusRenderer'))?.thumbnailOverlayTimeStatusRenderer;
 
     this.id = data.videoId;
     this.title = new Text(data.title);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
-    this.rich_thumbnail = data.richThumbnail && Parser.parseItem(data.richThumbnail);
+    this.rich_thumbnail = Parser.parseItem(data.richThumbnail);
     this.published = new Text(data.publishedTimeText);
     this.duration = data.lengthText ? new Text(data.lengthText) : length_alt?.text ? new Text(length_alt.text) : null;
     this.author = data.shortBylineText && new Author(data.shortBylineText, data.ownerBadges);
diff --git a/src/parser/classes/GuideCollapsibleEntry.ts b/src/parser/classes/GuideCollapsibleEntry.ts
index 9aeded7d..855fe426 100644
--- a/src/parser/classes/GuideCollapsibleEntry.ts
+++ b/src/parser/classes/GuideCollapsibleEntry.ts
@@ -1,14 +1,14 @@
 import Parser from '../parser.js';
 import GuideEntry from './GuideEntry.js';
 import type { RawNode } from '../index.js';
-import { YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
 export default class GuideCollapsibleEntry extends YTNode {
   static type = 'GuideCollapsibleEntry';
 
   expander_item: GuideEntry | null;
   collapser_item: GuideEntry | null;
-  expandable_items;
+  expandable_items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
diff --git a/src/parser/classes/GuideCollapsibleSectionEntry.ts b/src/parser/classes/GuideCollapsibleSectionEntry.ts
index f92e1594..65f03d07 100644
--- a/src/parser/classes/GuideCollapsibleSectionEntry.ts
+++ b/src/parser/classes/GuideCollapsibleSectionEntry.ts
@@ -1,14 +1,14 @@
 import Parser from '../parser.js';
 import type { RawNode } from '../index.js';
-import { YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
 export default class GuideCollapsibleSectionEntry extends YTNode {
   static type = 'GuideCollapsibleSectionEntry';
 
-  header_entry;
+  header_entry: YTNode;
   expander_icon: string;
   collapser_icon: string;
-  section_items;
+  section_items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
diff --git a/src/parser/classes/GuideEntry.ts b/src/parser/classes/GuideEntry.ts
index a0673583..cc89b653 100644
--- a/src/parser/classes/GuideEntry.ts
+++ b/src/parser/classes/GuideEntry.ts
@@ -1,7 +1,6 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
 
diff --git a/src/parser/classes/GuideSection.ts b/src/parser/classes/GuideSection.ts
index b52985f9..d0591211 100644
--- a/src/parser/classes/GuideSection.ts
+++ b/src/parser/classes/GuideSection.ts
@@ -1,13 +1,13 @@
 import Text from './misc/Text.js';
 import Parser from '../parser.js';
-import { YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
 
 export default class GuideSection extends YTNode {
   static type = 'GuideSection';
 
   title?: Text;
-  items;
+  items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
diff --git a/src/parser/classes/HashtagHeader.ts b/src/parser/classes/HashtagHeader.ts
index 1c805469..d3fe352f 100644
--- a/src/parser/classes/HashtagHeader.ts
+++ b/src/parser/classes/HashtagHeader.ts
@@ -2,7 +2,7 @@ import { YTNode } from '../helpers.js';
 import Text from './misc/Text.js';
 import type { RawNode } from '../index.js';
 
-class HashtagHeader extends YTNode {
+export default class HashtagHeader extends YTNode {
   static type = 'HashtagHeader';
 
   hashtag: Text;
@@ -13,6 +13,4 @@ class HashtagHeader extends YTNode {
     this.hashtag = new Text(data.hashtag);
     this.hashtag_info = new Text(data.hashtagInfoText);
   }
-}
-
-export default HashtagHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HeatMarker.ts b/src/parser/classes/HeatMarker.ts
index 62808b54..7a9fe6e5 100644
--- a/src/parser/classes/HeatMarker.ts
+++ b/src/parser/classes/HeatMarker.ts
@@ -1,18 +1,17 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class HeatMarker extends YTNode {
+export default class HeatMarker extends YTNode {
   static type = 'HeatMarker';
 
   time_range_start_millis: number;
   marker_duration_millis: number;
   heat_marker_intensity_score_normalized: number;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.time_range_start_millis = data.timeRangeStartMillis;
     this.marker_duration_millis = data.markerDurationMillis;
     this.heat_marker_intensity_score_normalized = data.heatMarkerIntensityScoreNormalized;
   }
-}
-
-export default HeatMarker;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Heatmap.ts b/src/parser/classes/Heatmap.ts
index 2f778e86..adb432e0 100644
--- a/src/parser/classes/Heatmap.ts
+++ b/src/parser/classes/Heatmap.ts
@@ -1,18 +1,17 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import HeatMarker from './HeatMarker.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-import { YTNode } from '../helpers.js';
-
-class Heatmap extends YTNode {
+export default class Heatmap extends YTNode {
   static type = 'Heatmap';
 
   max_height_dp: number;
   min_height_dp: number;
   show_hide_animation_duration_millis: number;
-  heat_markers: HeatMarker[];
-  heat_markers_decorations: any;
+  heat_markers: ObservedArray<HeatMarker>;
+  heat_markers_decorations: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.max_height_dp = data.maxHeightDp;
     this.min_height_dp = data.minHeightDp;
@@ -20,6 +19,4 @@ class Heatmap extends YTNode {
     this.heat_markers = Parser.parseArray(data.heatMarkers, HeatMarker);
     this.heat_markers_decorations = Parser.parseArray(data.heatMarkersDecorations);
   }
-}
-
-export default Heatmap;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HeroPlaylistThumbnail.ts b/src/parser/classes/HeroPlaylistThumbnail.ts
index 1d83b2af..63c8704a 100644
--- a/src/parser/classes/HeroPlaylistThumbnail.ts
+++ b/src/parser/classes/HeroPlaylistThumbnail.ts
@@ -1,19 +1,17 @@
 import { YTNode } from '../helpers.js';
+import { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-class HeroPlaylistThumbnail extends YTNode {
+export default class HeroPlaylistThumbnail extends YTNode {
   static type = 'HeroPlaylistThumbnail';
 
   thumbnails: Thumbnail[];
   on_tap_endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.on_tap_endpoint = new NavigationEndpoint(data.onTap);
   }
-}
-
-export default HeroPlaylistThumbnail;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HighlightsCarousel.ts b/src/parser/classes/HighlightsCarousel.ts
index 434fc336..531cbe7c 100644
--- a/src/parser/classes/HighlightsCarousel.ts
+++ b/src/parser/classes/HighlightsCarousel.ts
@@ -1,7 +1,8 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, observe } from '../helpers.js';
+import { type RawNode } from '../index.js';
 
-class Panel {
+export class Panel extends YTNode {
   static type = 'Panel';
 
   thumbnail?: {
@@ -42,7 +43,9 @@ class Panel {
     state: string;
   };
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
+    super();
+
     if (data.thumbnail) {
       this.thumbnail = {
         image: data.thumbnail.image.sources,
@@ -74,15 +77,13 @@ class Panel {
   }
 }
 
-class HighlightsCarousel extends YTNode {
+export default class HighlightsCarousel extends YTNode {
   static type = 'HighlightsCarousel';
 
   panels: Panel[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.panels = data.highlightsCarousel.panels.map((el: any) => new Panel(el));
+    this.panels = observe(data.highlightsCarousel.panels.map((el: RawNode) => new Panel(el)));
   }
-}
-
-export default HighlightsCarousel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HistorySuggestion.ts b/src/parser/classes/HistorySuggestion.ts
index 7ca2f2a0..19bd0e57 100644
--- a/src/parser/classes/HistorySuggestion.ts
+++ b/src/parser/classes/HistorySuggestion.ts
@@ -1,11 +1,10 @@
+import type { RawNode } from '../index.js';
 import SearchSuggestion from './SearchSuggestion.js';
 
-class HistorySuggestion extends SearchSuggestion {
+export default class HistorySuggestion extends SearchSuggestion {
   static type = 'HistorySuggestion';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default HistorySuggestion;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HorizontalCardList.ts b/src/parser/classes/HorizontalCardList.ts
index 8ed790dd..cee9dce0 100644
--- a/src/parser/classes/HorizontalCardList.ts
+++ b/src/parser/classes/HorizontalCardList.ts
@@ -1,26 +1,24 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 import SearchRefinementCard from './SearchRefinementCard.js';
 import Button from './Button.js';
 import MacroMarkersListItem from './MacroMarkersListItem.js';
 import GameCard from './GameCard.js';
 import VideoCard from './VideoCard.js';
 
-class HorizontalCardList extends YTNode {
+export default class HorizontalCardList extends YTNode {
   static type = 'HorizontalCardList';
 
-  cards;
-  header;
-  previous_button;
-  next_button;
+  cards: ObservedArray<SearchRefinementCard | MacroMarkersListItem | GameCard | VideoCard>;
+  header: YTNode;
+  previous_button: Button | null;
+  next_button: Button | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.cards = Parser.parseArray(data.cards, [ SearchRefinementCard, MacroMarkersListItem, GameCard, VideoCard ]);
     this.header = Parser.parseItem(data.header);
     this.previous_button = Parser.parseItem(data.previousButton, Button);
     this.next_button = Parser.parseItem(data.nextButton, Button);
   }
-}
-
-export default HorizontalCardList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HorizontalList.ts b/src/parser/classes/HorizontalList.ts
index 5497bdad..4d2a6a7c 100644
--- a/src/parser/classes/HorizontalList.ts
+++ b/src/parser/classes/HorizontalList.ts
@@ -1,22 +1,20 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class HorizontalList extends YTNode {
+export default class HorizontalList extends YTNode {
   static type = 'HorizontalList';
 
   visible_item_count: string;
-  items;
+  items: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.visible_item_count = data.visibleItemCount;
     this.items = Parser.parseArray(data.items);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default HorizontalList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/HorizontalMovieList.ts b/src/parser/classes/HorizontalMovieList.ts
index 2548a337..eaa6f3be 100644
--- a/src/parser/classes/HorizontalMovieList.ts
+++ b/src/parser/classes/HorizontalMovieList.ts
@@ -1,25 +1,23 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 import Button from './Button.js';
 
-class HorizontalMovieList extends YTNode {
+export default class HorizontalMovieList extends YTNode {
   static type = 'HorizontalMovieList';
 
-  items;
+  items: ObservedArray<YTNode>;
   previous_button: Button | null;
   next_button: Button | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
-    this.previous_button = Parser.parseItem<Button>(data.previousButton, Button);
-    this.next_button = Parser.parseItem<Button>(data.nextButton, Button);
+    this.previous_button = Parser.parseItem(data.previousButton, Button);
+    this.next_button = Parser.parseItem(data.nextButton, Button);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default HorizontalMovieList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/IconLink.ts b/src/parser/classes/IconLink.ts
index c680eb2c..c6bc965b 100644
--- a/src/parser/classes/IconLink.ts
+++ b/src/parser/classes/IconLink.ts
@@ -1,25 +1,24 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class IconLink extends YTNode {
+export default class IconLink extends YTNode {
   static type = 'IconLink';
 
   icon_type: string;
   tooltip?: string;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     this.icon_type = data.icon?.iconType;
 
-    if (data.tooltip) {
+    if (Reflect.has(data, 'tooltip')) {
       this.tooltip = new Text(data.tooltip).toString();
     }
 
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default IconLink;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/InfoPanelContainer.ts b/src/parser/classes/InfoPanelContainer.ts
index f1e0416f..c1a6174f 100644
--- a/src/parser/classes/InfoPanelContainer.ts
+++ b/src/parser/classes/InfoPanelContainer.ts
@@ -1,5 +1,5 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import InfoPanelContent from './InfoPanelContent.js';
 import Menu from './menus/Menu.js';
 import Text from './misc/Text.js';
@@ -7,11 +7,11 @@ import Text from './misc/Text.js';
 export default class InfoPanelContainer extends YTNode {
   static type = 'InfoPanelContainer';
 
-  icon_type?: string;
   title: Text;
   menu: Menu | null;
-  content: YTNode | null;
+  content: InfoPanelContent | null;
   background: string;
+  icon_type?: string;
 
   constructor(data: RawNode) {
     super();
@@ -20,8 +20,8 @@ export default class InfoPanelContainer extends YTNode {
     this.content = Parser.parseItem(data.content, InfoPanelContent);
     this.background = data.background;
 
-    if (data.icon?.iconType) {
-      this.icon_type = data.icon.iconType;
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon?.iconType;
     }
   }
 }
\ No newline at end of file
diff --git a/src/parser/classes/InfoPanelContent.ts b/src/parser/classes/InfoPanelContent.ts
index e7d2e83f..1821a7f6 100644
--- a/src/parser/classes/InfoPanelContent.ts
+++ b/src/parser/classes/InfoPanelContent.ts
@@ -1,5 +1,5 @@
 import { YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
@@ -8,13 +8,13 @@ export default class InfoPanelContent extends YTNode {
   static type = 'InfoPanelContent';
 
   title: Text;
-  inline_link_icon_type?: string;
   source: Text;
   paragraphs: Text[];
   thumbnail: Thumbnail[];
   source_endpoint: NavigationEndpoint;
   truncate_paragraphs: boolean;
   background: string;
+  inline_link_icon_type?: string;
 
   constructor(data: RawNode) {
     super();
@@ -26,7 +26,7 @@ export default class InfoPanelContent extends YTNode {
     this.truncate_paragraphs = !!data.truncateParagraphs;
     this.background = data.background;
 
-    if (data.inlineLinkIcon?.iconType) {
+    if (Reflect.has(data.inlineLinkIcon, 'iconType')) {
       this.inline_link_icon_type = data.inlineLinkIcon.iconType;
     }
   }
diff --git a/src/parser/classes/InteractiveTabbedHeader.ts b/src/parser/classes/InteractiveTabbedHeader.ts
index 48fd651f..d72fa98d 100644
--- a/src/parser/classes/InteractiveTabbedHeader.ts
+++ b/src/parser/classes/InteractiveTabbedHeader.ts
@@ -1,13 +1,13 @@
-import Parser from '../index.js';
-import { ObservedArray, YTNode } from '../helpers.js';
-
+import Button from './Button.js';
+import MetadataBadge from './MetadataBadge.js';
+import SubscribeButton from './SubscribeButton.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import SubscribeButton from './SubscribeButton.js';
-import MetadataBadge from './MetadataBadge.js';
-import Button from './Button.js';
 
-class InteractiveTabbedHeader extends YTNode {
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+
+export default class InteractiveTabbedHeader extends YTNode {
   static type = 'InteractiveTabbedHeader';
 
   header_type: string;
@@ -20,19 +20,16 @@ class InteractiveTabbedHeader extends YTNode {
   buttons: ObservedArray<SubscribeButton | Button>;
   auto_generated: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.header_type = data.type;
     this.title = new Text(data.title);
     this.description = new Text(data.description);
     this.metadata = new Text(data.metadata);
-    this.badges = Parser.parseArray<MetadataBadge>(data.badges, MetadataBadge);
+    this.badges = Parser.parseArray(data.badges, MetadataBadge);
     this.box_art = Thumbnail.fromResponse(data.boxArt);
     this.banner = Thumbnail.fromResponse(data.banner);
     this.buttons = Parser.parseArray(data.buttons, [ SubscribeButton, Button ]);
     this.auto_generated = new Text(data.autoGenerated);
   }
-}
-
-export default InteractiveTabbedHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ItemSection.ts b/src/parser/classes/ItemSection.ts
index 7849588a..855c6284 100644
--- a/src/parser/classes/ItemSection.ts
+++ b/src/parser/classes/ItemSection.ts
@@ -1,31 +1,28 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import ItemSectionHeader from './ItemSectionHeader.js';
-
-import { YTNode } from '../helpers.js';
 import ItemSectionTabbedHeader from './ItemSectionTabbedHeader.js';
 import CommentsHeader from './comments/CommentsHeader.js';
 
-class ItemSection extends YTNode {
+export default class ItemSection extends YTNode {
   static type = 'ItemSection';
 
   header: CommentsHeader | ItemSectionHeader | ItemSectionTabbedHeader | null;
-  contents;
+  contents: ObservedArray<YTNode>;
   target_id?: string;
   continuation?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.header = Parser.parseItem(data.header, [ CommentsHeader, ItemSectionHeader, ItemSectionTabbedHeader ]);
-    this.contents = Parser.parse(data.contents, true);
+    this.contents = Parser.parseArray(data.contents);
 
     if (data.targetId || data.sectionIdentifier) {
-      this.target_id = data?.target_id || data?.sectionIdentifier;
+      this.target_id = data.target_id || data.sectionIdentifier;
     }
 
     if (data.continuations) {
       this.continuation = data.continuations?.at(0)?.nextContinuationData?.continuation;
     }
   }
-}
-
-export default ItemSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ItemSectionHeader.ts b/src/parser/classes/ItemSectionHeader.ts
index d4b87f95..4bf2d56f 100644
--- a/src/parser/classes/ItemSectionHeader.ts
+++ b/src/parser/classes/ItemSectionHeader.ts
@@ -1,15 +1,14 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ItemSectionHeader extends YTNode {
+export default class ItemSectionHeader extends YTNode {
   static type = 'ItemSectionHeader';
 
   title: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default ItemSectionHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ItemSectionTab.ts b/src/parser/classes/ItemSectionTab.ts
index 01d4d80f..bab82e8a 100644
--- a/src/parser/classes/ItemSectionTab.ts
+++ b/src/parser/classes/ItemSectionTab.ts
@@ -1,21 +1,19 @@
-import NavigationEndpoint from './NavigationEndpoint.js';
-
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 
-class ItemSectionTab extends YTNode {
+export default class ItemSectionTab extends YTNode {
   static type = 'Tab';
 
   title: Text;
   selected: boolean;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
-    this.selected = data.selected || false;
+    this.selected = !!data.selected;
     this.endpoint = new NavigationEndpoint(data.endpoint);
   }
-}
-
-export default ItemSectionTab;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ItemSectionTabbedHeader.ts b/src/parser/classes/ItemSectionTabbedHeader.ts
index bf69a707..3cd27d2c 100644
--- a/src/parser/classes/ItemSectionTabbedHeader.ts
+++ b/src/parser/classes/ItemSectionTabbedHeader.ts
@@ -1,23 +1,21 @@
-import Text from './misc/Text.js';
-import { ObservedArray, YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import ItemSectionTab from './ItemSectionTab.js';
-import Parser from '../index.js';
+import Text from './misc/Text.js';
 
-class ItemSectionTabbedHeader extends YTNode {
+export default class ItemSectionTabbedHeader extends YTNode {
   static type = 'ItemSectionTabbedHeader';
 
   title: Text;
-  tabs: Array<ItemSectionTab>;
+  tabs: ObservedArray<ItemSectionTab>;
   end_items?: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.tabs = Parser.parseArray(data.tabs, ItemSectionTab);
-    if (data.endItems) {
+    if (Reflect.has(data, 'endItems')) {
       this.end_items = Parser.parseArray(data.endItems);
     }
   }
-}
-
-export default ItemSectionTabbedHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LikeButton.ts b/src/parser/classes/LikeButton.ts
index 5d157bdb..9dc84d27 100644
--- a/src/parser/classes/LikeButton.ts
+++ b/src/parser/classes/LikeButton.ts
@@ -1,7 +1,8 @@
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 
-class LikeButton extends YTNode {
+export default class LikeButton extends YTNode {
   static type = 'LikeButton';
 
   target: {
@@ -12,7 +13,7 @@ class LikeButton extends YTNode {
   likes_allowed: string;
   endpoints?: NavigationEndpoint[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     this.target = {
@@ -22,10 +23,8 @@ class LikeButton extends YTNode {
     this.like_status = data.likeStatus;
     this.likes_allowed = data.likesAllowed;
 
-    if (data.serviceEndpoints) {
-      this.endpoints = data.serviceEndpoints?.map((endpoint: any) => new NavigationEndpoint(endpoint));
+    if (Reflect.has(data, 'serviceEndpoints')) {
+      this.endpoints = data.serviceEndpoints.map((endpoint: RawNode) => new NavigationEndpoint(endpoint));
     }
   }
-}
-
-export default LikeButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChat.ts b/src/parser/classes/LiveChat.ts
index a6dcfb52..83eb35c0 100644
--- a/src/parser/classes/LiveChat.ts
+++ b/src/parser/classes/LiveChat.ts
@@ -1,11 +1,11 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 
-class LiveChat extends YTNode {
+export default class LiveChat extends YTNode {
   static type = 'LiveChat';
 
-  header;
+  header: YTNode;
   initial_display_state: string;
   continuation: string;
 
@@ -33,8 +33,6 @@ class LiveChat extends YTNode {
       generic_error: new Text(data.clientMessages.genericError)
     };
 
-    this.is_replay = data.isReplay || false;
+    this.is_replay = !!data.isReplay;
   }
-}
-
-export default LiveChat;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatAuthorBadge.ts b/src/parser/classes/LiveChatAuthorBadge.ts
index bf6b9288..459e974d 100644
--- a/src/parser/classes/LiveChatAuthorBadge.ts
+++ b/src/parser/classes/LiveChatAuthorBadge.ts
@@ -1,15 +1,14 @@
+import type { RawNode } from '../index.js';
 import MetadataBadge from './MetadataBadge.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-class LiveChatAuthorBadge extends MetadataBadge {
+export default class LiveChatAuthorBadge extends MetadataBadge {
   static type = 'LiveChatAuthorBadge';
 
-  custom_thumbnail: Thumbnail[] | null;
+  custom_thumbnail: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
-    this.custom_thumbnail = data.customThumbnail ? Thumbnail.fromResponse(data.customThumbnail) : null;
+    this.custom_thumbnail = Thumbnail.fromResponse(data.customThumbnail);
   }
-}
-
-export default LiveChatAuthorBadge;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatDialog.ts b/src/parser/classes/LiveChatDialog.ts
index 2c12343e..ee374b5a 100644
--- a/src/parser/classes/LiveChatDialog.ts
+++ b/src/parser/classes/LiveChatDialog.ts
@@ -1,19 +1,17 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import Button from './Button.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import Text from './misc/Text.js';
 
-class LiveChatDialog extends YTNode {
+export default class LiveChatDialog extends YTNode {
   static type = 'LiveChatDialog';
 
   confirm_button: Button | null;
   dialog_messages: Text[];
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
-    this.confirm_button = Parser.parseItem<Button>(data.confirmButton, Button);
-    this.dialog_messages = data.dialogMessages.map((el: any) => new Text(el));
+    this.confirm_button = Parser.parseItem(data.confirmButton, Button);
+    this.dialog_messages = data.dialogMessages.map((el: RawNode) => new Text(el));
   }
-}
-
-export default LiveChatDialog;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatHeader.ts b/src/parser/classes/LiveChatHeader.ts
index ab5d21c5..19f0e96e 100644
--- a/src/parser/classes/LiveChatHeader.ts
+++ b/src/parser/classes/LiveChatHeader.ts
@@ -1,22 +1,20 @@
-import Parser from '../index.js';
-import Menu from './menus/Menu.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import SortFilterSubMenu from './SortFilterSubMenu.js';
-import { YTNode } from '../helpers.js';
+import Menu from './menus/Menu.js';
 
-class LiveChatHeader extends YTNode {
+export default class LiveChatHeader extends YTNode {
   static type = 'LiveChatHeader';
 
   overflow_menu: Menu | null;
   collapse_button: Button | null;
   view_selector: SortFilterSubMenu | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.overflow_menu = Parser.parseItem(data.overflowMenu, Menu);
     this.collapse_button = Parser.parseItem(data.collapseButton, Button);
     this.view_selector = Parser.parseItem(data.viewSelector, SortFilterSubMenu);
   }
-}
-
-export default LiveChatHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatItemList.ts b/src/parser/classes/LiveChatItemList.ts
index c1ea7606..a38bebee 100644
--- a/src/parser/classes/LiveChatItemList.ts
+++ b/src/parser/classes/LiveChatItemList.ts
@@ -1,18 +1,16 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 
-class LiveChatItemList extends YTNode {
+export default class LiveChatItemList extends YTNode {
   static type = 'LiveChatItemList';
 
   max_items_to_display: string;
   more_comments_below_button: Button | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.max_items_to_display = data.maxItemsToDisplay;
     this.more_comments_below_button = Parser.parseItem(data.moreCommentsBelowButton, Button);
   }
-}
-
-export default LiveChatItemList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatMessageInput.ts b/src/parser/classes/LiveChatMessageInput.ts
index db1e66d6..bf7bfef9 100644
--- a/src/parser/classes/LiveChatMessageInput.ts
+++ b/src/parser/classes/LiveChatMessageInput.ts
@@ -1,10 +1,10 @@
-import Text from './misc/Text.js';
-import Parser from '../index.js';
-import Thumbnail from './misc/Thumbnail.js';
-import Button from './Button.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class LiveChatMessageInput extends YTNode {
+export default class LiveChatMessageInput extends YTNode {
   static type = 'LiveChatMessageInput';
 
   author_name: Text;
@@ -12,13 +12,11 @@ class LiveChatMessageInput extends YTNode {
   send_button: Button | null;
   target_id: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.author_name = new Text(data.authorName);
     this.author_photo = Thumbnail.fromResponse(data.authorPhoto);
     this.send_button = Parser.parseItem(data.sendButton, Button);
     this.target_id = data.targetId;
   }
-}
-
-export default LiveChatMessageInput;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatParticipant.ts b/src/parser/classes/LiveChatParticipant.ts
index 264e801d..93cf7170 100644
--- a/src/parser/classes/LiveChatParticipant.ts
+++ b/src/parser/classes/LiveChatParticipant.ts
@@ -1,21 +1,19 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import { YTNode } from '../helpers.js';
 
-class LiveChatParticipant extends YTNode {
+export default class LiveChatParticipant extends YTNode {
   static type = 'LiveChatParticipant';
 
   name: Text;
   photo: Thumbnail[];
-  badges;
+  badges: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.name = new Text(data.authorName);
     this.photo = Thumbnail.fromResponse(data.authorPhoto);
-    this.badges = Parser.parse(data.authorBadges);
+    this.badges = Parser.parseArray(data.authorBadges);
   }
-}
-
-export default LiveChatParticipant;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/LiveChatParticipantsList.ts b/src/parser/classes/LiveChatParticipantsList.ts
index f87cf8ed..f82289b7 100644
--- a/src/parser/classes/LiveChatParticipantsList.ts
+++ b/src/parser/classes/LiveChatParticipantsList.ts
@@ -1,19 +1,17 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import { ObservedArray, YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import LiveChatParticipant from './LiveChatParticipant.js';
+import Text from './misc/Text.js';
 
-class LiveChatParticipantsList extends YTNode {
+export default class LiveChatParticipantsList extends YTNode {
   static type = 'LiveChatParticipantsList';
 
   title: Text;
   participants: ObservedArray<LiveChatParticipant>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.participants = Parser.parseArray(data.participants, LiveChatParticipant);
   }
-}
-
-export default LiveChatParticipantsList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MacroMarkersListItem.ts b/src/parser/classes/MacroMarkersListItem.ts
index d3518a63..acbe18a1 100644
--- a/src/parser/classes/MacroMarkersListItem.ts
+++ b/src/parser/classes/MacroMarkersListItem.ts
@@ -3,8 +3,9 @@ import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MacroMarkersListItem extends YTNode {
+export default class MacroMarkersListItem extends YTNode {
   static type = 'MacroMarkersListItem';
 
   title: Text;
@@ -14,16 +15,13 @@ class MacroMarkersListItem extends YTNode {
   layout: string;
   is_highlighted: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.title = new Text(data.title);
     this.time_description = new Text(data.timeDescription);
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
     this.on_tap_endpoint = new NavigationEndpoint(data.onTap);
     this.layout = data.layout;
-    this.is_highlighted = data.isHighlighted;
+    this.is_highlighted = !!data.isHighlighted;
   }
-}
-
-export default MacroMarkersListItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MerchandiseItem.ts b/src/parser/classes/MerchandiseItem.ts
index f351a5e7..830ec579 100644
--- a/src/parser/classes/MerchandiseItem.ts
+++ b/src/parser/classes/MerchandiseItem.ts
@@ -1,8 +1,9 @@
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MerchandiseItem extends YTNode {
+export default class MerchandiseItem extends YTNode {
   static type = 'MerchandiseItem';
 
   title: string;
@@ -17,7 +18,7 @@ class MerchandiseItem extends YTNode {
   region_format: string;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = data.title;
     this.description = data.description;
@@ -31,6 +32,4 @@ class MerchandiseItem extends YTNode {
     this.region_format = data.regionFormat;
     this.endpoint = new NavigationEndpoint(data.buttonCommand);
   }
-}
-
-export default MerchandiseItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MerchandiseShelf.ts b/src/parser/classes/MerchandiseShelf.ts
index e53b52ed..bc371d3c 100644
--- a/src/parser/classes/MerchandiseShelf.ts
+++ b/src/parser/classes/MerchandiseShelf.ts
@@ -1,12 +1,12 @@
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class MerchandiseShelf extends YTNode {
+export default class MerchandiseShelf extends YTNode {
   static type = 'MerchandiseShelf';
 
   title: string;
-  menu;
-  items;
+  menu: YTNode;
+  items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
@@ -15,10 +15,8 @@ class MerchandiseShelf extends YTNode {
     this.items = Parser.parseArray(data.items);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default MerchandiseShelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Message.ts b/src/parser/classes/Message.ts
index 49927a1d..cf3ae909 100644
--- a/src/parser/classes/Message.ts
+++ b/src/parser/classes/Message.ts
@@ -1,15 +1,14 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class Message extends YTNode {
+export default class Message extends YTNode {
   static type = 'Message';
 
-  text: string;
+  text: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.text = new Text(data.text).toString();
+    this.text = new Text(data.text);
   }
-}
-
-export default Message;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MetadataBadge.ts b/src/parser/classes/MetadataBadge.ts
index 27036daa..4ae60be9 100644
--- a/src/parser/classes/MetadataBadge.ts
+++ b/src/parser/classes/MetadataBadge.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MetadataBadge extends YTNode {
+export default class MetadataBadge extends YTNode {
   static type = 'MetadataBadge';
 
   icon_type?: string;
@@ -8,25 +9,22 @@ class MetadataBadge extends YTNode {
   label?: string;
   tooltip?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
-    if (data?.icon) {
+    if (Reflect.has(data, 'icon')) {
       this.icon_type = data.icon.iconType;
     }
 
-    if (data?.style) {
+    if (Reflect.has(data, 'style')) {
       this.style = data.style;
     }
 
-    if (data?.label) {
+    if (Reflect.has(data, 'label')) {
       this.label = data.label;
     }
 
-    if (data?.tooltip || data?.iconTooltip) {
+    if (Reflect.has(data, 'tooltip') || Reflect.has(data, 'iconTooltip')) {
       this.tooltip = data.tooltip || data.iconTooltip;
     }
   }
-}
-
-export default MetadataBadge;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MetadataRow.ts b/src/parser/classes/MetadataRow.ts
index 18c8ed86..d79c730b 100644
--- a/src/parser/classes/MetadataRow.ts
+++ b/src/parser/classes/MetadataRow.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MetadataRow extends YTNode {
+export default class MetadataRow extends YTNode {
   static type = 'MetadataRow';
 
-  title;
-  contents;
+  title: Text;
+  contents: Text[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
-    this.contents = (data.contents as any[]).map((content) => new Text(content));
+    this.contents = data.contents.map((content: RawNode) => new Text(content));
   }
-}
-
-export default MetadataRow;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MetadataRowContainer.ts b/src/parser/classes/MetadataRowContainer.ts
index d8845a85..e22a6848 100644
--- a/src/parser/classes/MetadataRowContainer.ts
+++ b/src/parser/classes/MetadataRowContainer.ts
@@ -1,16 +1,15 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class MetadataRowContainer extends YTNode {
+export default class MetadataRowContainer extends YTNode {
   static type = 'MetadataRowContainer';
-  rows;
-  collapsed_item_count: number; // TODO: validate this assumption
 
-  constructor(data: any) {
+  rows: ObservedArray<YTNode>;
+  collapsed_item_count: number;
+
+  constructor(data: RawNode) {
     super();
     this.rows = Parser.parseArray(data.rows);
     this.collapsed_item_count = data.collapsedItemCount;
   }
-}
-
-export default MetadataRowContainer;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MetadataRowHeader.ts b/src/parser/classes/MetadataRowHeader.ts
index 5e86c832..bdf74923 100644
--- a/src/parser/classes/MetadataRowHeader.ts
+++ b/src/parser/classes/MetadataRowHeader.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MetadataRowHeader extends YTNode {
+export default class MetadataRowHeader extends YTNode {
   static type = 'MetadataRowHeader';
 
   content: Text;
   has_divider_line: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.content = new Text(data.content);
     this.has_divider_line = data.hasDividerLine;
   }
-}
-
-export default MetadataRowHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MetadataScreen.ts b/src/parser/classes/MetadataScreen.ts
index 89fb61cd..79ddb6cb 100644
--- a/src/parser/classes/MetadataScreen.ts
+++ b/src/parser/classes/MetadataScreen.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class MetadataScreen extends YTNode {
+export default class MetadataScreen extends YTNode {
   static type = 'MetadataScreen';
 
-  section_list;
+  section_list: YTNode;
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
     this.section_list = Parser.parseItem(data);
   }
-}
-
-export default MetadataScreen;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MicroformatData.ts b/src/parser/classes/MicroformatData.ts
index f486d77f..879e5f66 100644
--- a/src/parser/classes/MicroformatData.ts
+++ b/src/parser/classes/MicroformatData.ts
@@ -1,13 +1,14 @@
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MicroformatData extends YTNode {
+export default class MicroformatData extends YTNode {
   static type = 'MicroformatData';
 
   url_canonical: string;
   title: string;
   description: string;
-  thumbnail: Thumbnail[] | null;
+  thumbnail: Thumbnail[];
   site_name: string;
   app_name: string;
   android_package: string;
@@ -25,15 +26,15 @@ class MicroformatData extends YTNode {
   noindex: string;
   is_unlisted: boolean;
   is_family_safe: boolean;
-  tags: any; // TODO: string array?
+  tags: string[];
   available_countries: string[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.url_canonical = data.urlCanonical;
     this.title = data.title;
     this.description = data.description;
-    this.thumbnail = data.thumbnail ? Thumbnail.fromResponse(data.thumbnail) : null;
+    this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
     this.site_name = data.siteName;
     this.app_name = data.appName;
     this.android_package = data.androidPackage;
@@ -55,6 +56,4 @@ class MicroformatData extends YTNode {
     this.available_countries = data.availableCountries;
     // XXX: linkAlternatives?
   }
-}
-
-export default MicroformatData;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Mix.ts b/src/parser/classes/Mix.ts
index 25e28c2a..42cc3e9e 100644
--- a/src/parser/classes/Mix.ts
+++ b/src/parser/classes/Mix.ts
@@ -1,11 +1,10 @@
+import type { RawNode } from '../index.js';
 import Playlist from './Playlist.js';
 
-class Mix extends Playlist {
+export default class Mix extends Playlist {
   static type = 'Mix';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default Mix;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Movie.ts b/src/parser/classes/Movie.ts
index 5c9e9adf..35754474 100644
--- a/src/parser/classes/Movie.ts
+++ b/src/parser/classes/Movie.ts
@@ -1,20 +1,21 @@
-import Parser, { RawNode } from '../index.js';
-import Author from './misc/Author.js';
-import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { timeToSeconds } from '../../utils/Utils.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Menu from './menus/Menu.js';
+import Author from './misc/Author.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class Movie extends YTNode {
+export default class Movie extends YTNode {
   static type = 'Movie';
 
   id: string;
   title: Text;
-  description_snippet: Text | null;
+  description_snippet?: Text;
   top_metadata_items: Text;
   thumbnails: Thumbnail[];
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
   author: Author;
 
   duration: {
@@ -23,20 +24,24 @@ class Movie extends YTNode {
   };
 
   endpoint: NavigationEndpoint;
-  badges;
+  badges: ObservedArray<YTNode>;
   use_vertical_poster: boolean;
   show_action_menu: boolean;
-  menu;
+  menu: Menu | null;
 
   constructor(data: RawNode) {
     super();
     const overlay_time_status = data.thumbnailOverlays
-      .find((overlay: any) => overlay.thumbnailOverlayTimeStatusRenderer)
+      .find((overlay: RawNode) => overlay.thumbnailOverlayTimeStatusRenderer)
       ?.thumbnailOverlayTimeStatusRenderer.text || 'N/A';
 
     this.id = data.videoId;
     this.title = new Text(data.title);
-    this.description_snippet = data.descriptionSnippet ? new Text(data.descriptionSnippet) : null;
+
+    if (Reflect.has(data, 'descriptionSnippet')) {
+      this.description_snippet = new Text(data.descriptionSnippet);
+    }
+
     this.top_metadata_items = new Text(data.topMetadataItems);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
@@ -48,11 +53,9 @@ class Movie extends YTNode {
     };
 
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
-    this.badges = Parser.parse(data.badges);
+    this.badges = Parser.parseArray(data.badges);
     this.use_vertical_poster = data.useVerticalPoster;
     this.show_action_menu = data.showActionMenu;
-    this.menu = Parser.parseItem(data.menu);
+    this.menu = Parser.parseItem(data.menu, Menu);
   }
-}
-
-export default Movie;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MovingThumbnail.ts b/src/parser/classes/MovingThumbnail.ts
index a5679864..32c08376 100644
--- a/src/parser/classes/MovingThumbnail.ts
+++ b/src/parser/classes/MovingThumbnail.ts
@@ -1,13 +1,12 @@
-import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class MovingThumbnail extends YTNode {
+export default class MovingThumbnail extends YTNode {
   static type = 'MovingThumbnail';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    return data.movingThumbnailDetails?.thumbnails.map((thumbnail: any) => new Thumbnail(thumbnail)).sort((a: any, b: any) => b.width - a.width);
+    return data.movingThumbnailDetails?.thumbnails.map((thumbnail: RawNode) => new Thumbnail(thumbnail)).sort((a: any, b: any) => b.width - a.width);
   }
-}
-
-export default MovingThumbnail;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MultiMarkersPlayerBar.ts b/src/parser/classes/MultiMarkersPlayerBar.ts
index fa5f845a..37685035 100644
--- a/src/parser/classes/MultiMarkersPlayerBar.ts
+++ b/src/parser/classes/MultiMarkersPlayerBar.ts
@@ -1,11 +1,10 @@
+import { YTNode, observe, type ObservedArray } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Parser from '../index.js';
 import Chapter from './Chapter.js';
 import Heatmap from './Heatmap.js';
-import type { RawNode } from '../index.js';
 
-import { observe, ObservedArray, YTNode } from '../helpers.js';
-
-class Marker extends YTNode {
+export class Marker extends YTNode {
   static type = 'Marker';
 
   marker_key: string;
@@ -14,23 +13,23 @@ class Marker extends YTNode {
     chapters?: Chapter[];
   };
 
-  constructor (data: RawNode) {
+  constructor(data: RawNode) {
     super();
     this.marker_key = data.key;
 
     this.value = {};
 
-    if (data.value.heatmap) {
+    if (Reflect.has(data.value, 'heatmap')) {
       this.value.heatmap = Parser.parseItem(data.value.heatmap, Heatmap);
     }
 
-    if (data.value.chapters) {
+    if (Reflect.has(data.value, 'chapters')) {
       this.value.chapters = Parser.parseArray(data.value.chapters, Chapter);
     }
   }
 }
 
-class MultiMarkersPlayerBar extends YTNode {
+export default class MultiMarkersPlayerBar extends YTNode {
   static type = 'MultiMarkersPlayerBar';
 
   markers_map: ObservedArray<Marker>;
@@ -39,10 +38,9 @@ class MultiMarkersPlayerBar extends YTNode {
     super();
     this.markers_map = observe(data.markersMap?.map((marker: {
       key: string;
-      value: { [key: string ]: any
-    }}) => new Marker(marker)) || []);
+      value: {
+        [key: string]: RawNode
+      }
+    }) => new Marker(marker)) || []);
   }
-}
-
-export { Marker };
-export default MultiMarkersPlayerBar;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicCardShelf.ts b/src/parser/classes/MusicCardShelf.ts
index 2cb0c95e..eeaf33f2 100644
--- a/src/parser/classes/MusicCardShelf.ts
+++ b/src/parser/classes/MusicCardShelf.ts
@@ -1,5 +1,5 @@
-import { ObservedArray, YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import Menu from './menus/Menu.js';
 import Text from './misc/Text.js';
@@ -15,14 +15,14 @@ export default class MusicCardShelf extends YTNode {
   thumbnail: MusicThumbnail | null;
   title: Text;
   subtitle: Text;
-  buttons: ObservedArray<Button> | null;
+  buttons: ObservedArray<Button>;
   menu: Menu | null;
   on_tap: NavigationEndpoint;
   header: MusicCardShelfHeaderBasic | null;
   end_icon_type?: string;
   subtitle_badges: ObservedArray<MusicInlineBadge>;
   thumbnail_overlay: MusicItemThumbnailOverlay | null;
-  contents?: ObservedArray<YTNode> | null;
+  contents?: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
diff --git a/src/parser/classes/MusicCardShelfHeaderBasic.ts b/src/parser/classes/MusicCardShelfHeaderBasic.ts
index b8c9f8dd..893d92c4 100644
--- a/src/parser/classes/MusicCardShelfHeaderBasic.ts
+++ b/src/parser/classes/MusicCardShelfHeaderBasic.ts
@@ -1,5 +1,5 @@
 import { YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 
 export default class MusicCardShelfHeaderBasic extends YTNode {
diff --git a/src/parser/classes/MusicCarouselShelf.ts b/src/parser/classes/MusicCarouselShelf.ts
index de8e54d9..cdca2355 100644
--- a/src/parser/classes/MusicCarouselShelf.ts
+++ b/src/parser/classes/MusicCarouselShelf.ts
@@ -1,25 +1,25 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-import MusicTwoRowItem from './MusicTwoRowItem.js';
-import MusicResponsiveListItem from './MusicResponsiveListItem.js';
 import MusicCarouselShelfBasicHeader from './MusicCarouselShelfBasicHeader.js';
 import MusicNavigationButton from './MusicNavigationButton.js';
+import MusicResponsiveListItem from './MusicResponsiveListItem.js';
+import MusicTwoRowItem from './MusicTwoRowItem.js';
 
-import { ObservedArray, YTNode } from '../helpers.js';
-
-class MusicCarouselShelf extends YTNode {
+export default class MusicCarouselShelf extends YTNode {
   static type = 'MusicCarouselShelf';
 
   header: MusicCarouselShelfBasicHeader | null;
   contents: ObservedArray<MusicTwoRowItem | MusicResponsiveListItem | MusicNavigationButton>;
-  num_items_per_column: number | null;
+  num_items_per_column?: number;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.header = Parser.parseItem<MusicCarouselShelfBasicHeader>(data.header, MusicCarouselShelfBasicHeader);
+    this.header = Parser.parseItem(data.header, MusicCarouselShelfBasicHeader);
     this.contents = Parser.parseArray(data.contents, [ MusicTwoRowItem, MusicResponsiveListItem, MusicNavigationButton ]);
-    this.num_items_per_column = Reflect.has(data, 'numItemsPerColumn') ? parseInt(data.numItemsPerColumn) : null;
-  }
-}
 
-export default MusicCarouselShelf;
\ No newline at end of file
+    if (Reflect.has(data, 'numItemsPerColumn')) {
+      this.num_items_per_column = parseInt(data.numItemsPerColumn);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicCarouselShelfBasicHeader.ts b/src/parser/classes/MusicCarouselShelfBasicHeader.ts
index 94f26a48..03de9222 100644
--- a/src/parser/classes/MusicCarouselShelfBasicHeader.ts
+++ b/src/parser/classes/MusicCarouselShelfBasicHeader.ts
@@ -1,41 +1,37 @@
-import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
-import MusicThumbnail from './MusicThumbnail.js';
-import Parser from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import IconLink from './IconLink.js';
+import MusicThumbnail from './MusicThumbnail.js';
+import Text from './misc/Text.js';
 
-class MusicCarouselShelfBasicHeader extends YTNode {
+export default class MusicCarouselShelfBasicHeader extends YTNode {
   static type = 'MusicCarouselShelfBasicHeader';
 
-  strapline?: Text;
   title: Text;
+  strapline?: Text;
   thumbnail?: MusicThumbnail | null;
   more_content?: Button | null;
-  end_icons?: Array<IconLink>;
+  end_icons?: ObservedArray<IconLink>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
+    this.title = new Text(data.title);
 
-    if (data.strapline) {
+    if (Reflect.has(data, 'strapline')) {
       this.strapline = new Text(data.strapline);
     }
 
-    this.title = new Text(data.title);
-    // This.label = data.accessibilityData.accessibilityData.label;
-    // ^^ redundant?
-    if (data.thumbnail) {
-      this.thumbnail = Parser.parseItem<MusicThumbnail>(data.thumbnail, MusicThumbnail);
+    if (Reflect.has(data, 'thumbnail')) {
+      this.thumbnail = Parser.parseItem(data.thumbnail, MusicThumbnail);
     }
 
-    if (data.moreContentButton) {
-      this.more_content = Parser.parseItem<Button>(data.moreContentButton, Button);
+    if (Reflect.has(data, 'moreContentButton')) {
+      this.more_content = Parser.parseItem(data.moreContentButton, Button);
     }
 
-    if (data.endIcons) {
-      this.end_icons = Parser.parseArray<IconLink>(data.endIcons, IconLink);
+    if (Reflect.has(data, 'endIcons')) {
+      this.end_icons = Parser.parseArray(data.endIcons, IconLink);
     }
   }
-}
-
-export default MusicCarouselShelfBasicHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicDescriptionShelf.ts b/src/parser/classes/MusicDescriptionShelf.ts
index eb4663da..b3a8c614 100644
--- a/src/parser/classes/MusicDescriptionShelf.ts
+++ b/src/parser/classes/MusicDescriptionShelf.ts
@@ -1,7 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicDescriptionShelf extends YTNode {
+export default class MusicDescriptionShelf extends YTNode {
   static type = 'MusicDescriptionShelf';
 
   description: Text;
@@ -9,20 +10,18 @@ class MusicDescriptionShelf extends YTNode {
   max_expanded_lines?: string;
   footer: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.description = new Text(data.description);
 
-    if (this.max_collapsed_lines) {
+    if (Reflect.has(data, 'maxCollapsedLines')) {
       this.max_collapsed_lines = data.maxCollapsedLines;
     }
 
-    if (this.max_expanded_lines) {
+    if (Reflect.has(data, 'maxExpandedLines')) {
       this.max_expanded_lines = data.maxExpandedLines;
     }
 
     this.footer = new Text(data.footer);
   }
-}
-
-export default MusicDescriptionShelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicDetailHeader.ts b/src/parser/classes/MusicDetailHeader.ts
index 82f5d810..8124d4bf 100644
--- a/src/parser/classes/MusicDetailHeader.ts
+++ b/src/parser/classes/MusicDetailHeader.ts
@@ -1,11 +1,11 @@
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import TextRun from './misc/TextRun.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 
-class MusicDetailHeader extends YTNode {
+export default class MusicDetailHeader extends YTNode {
   static type = 'MusicDetailHeader';
 
   title: Text;
@@ -16,13 +16,13 @@ class MusicDetailHeader extends YTNode {
   song_count: string;
   total_duration: string;
   thumbnails: Thumbnail[];
-  badges;
+  badges: ObservedArray<YTNode>;
   author?: {
     name: string;
     channel_id: string | undefined;
     endpoint: NavigationEndpoint | undefined;
   };
-  menu;
+  menu: YTNode;
 
   constructor(data: RawNode) {
     super();
@@ -34,7 +34,7 @@ class MusicDetailHeader extends YTNode {
     this.song_count = this.second_subtitle.runs?.[0]?.text || '';
     this.total_duration = this.second_subtitle.runs?.[2]?.text || '';
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail.croppedSquareThumbnailRenderer.thumbnail);
-    this.badges = Parser.parse(data.subtitleBadges);
+    this.badges = Parser.parseArray(data.subtitleBadges);
 
     const author = this.subtitle.runs?.find((run) => (run as TextRun)?.endpoint?.payload?.browseId.startsWith('UC'));
 
@@ -48,6 +48,4 @@ class MusicDetailHeader extends YTNode {
 
     this.menu = Parser.parseItem(data.menu);
   }
-}
-
-export default MusicDetailHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicDownloadStateBadge.ts b/src/parser/classes/MusicDownloadStateBadge.ts
index dcd02caa..1ca000f4 100644
--- a/src/parser/classes/MusicDownloadStateBadge.ts
+++ b/src/parser/classes/MusicDownloadStateBadge.ts
@@ -1,16 +1,15 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicDownloadStateBadge extends YTNode {
+export default class MusicDownloadStateBadge extends YTNode {
   static type = 'MusicDownloadStateBadge';
 
   playlist_id: string;
   supported_download_states: string[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.playlist_id = data.playlistId;
     this.supported_download_states = data.supportedDownloadStates;
   }
-}
-
-export default MusicDownloadStateBadge;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicEditablePlaylistDetailHeader.ts b/src/parser/classes/MusicEditablePlaylistDetailHeader.ts
index febec930..a7071ecf 100644
--- a/src/parser/classes/MusicEditablePlaylistDetailHeader.ts
+++ b/src/parser/classes/MusicEditablePlaylistDetailHeader.ts
@@ -1,18 +1,15 @@
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class MusicEditablePlaylistDetailHeader extends YTNode {
+export default class MusicEditablePlaylistDetailHeader extends YTNode {
   static type = 'MusicEditablePlaylistDetailHeader';
 
-  header;
+  header: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.header = Parser.parseItem(data.header);
 
-    // TODO: Should we also parse data.editHeader.musicPlaylistEditHeaderRenderer?
-    // It doesn't seem practical to do so...
+    // TODO: Parse data.editHeader.musicPlaylistEditHeaderRenderer.
   }
-}
-
-export default MusicEditablePlaylistDetailHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicElementHeader.ts b/src/parser/classes/MusicElementHeader.ts
index 5b6495ed..19e9e158 100644
--- a/src/parser/classes/MusicElementHeader.ts
+++ b/src/parser/classes/MusicElementHeader.ts
@@ -1,17 +1,14 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Element from './Element.js';
-
 import { YTNode } from '../helpers.js';
 
-class MusicElementHeader extends YTNode {
+export default class MusicElementHeader extends YTNode {
   static type = 'MusicElementHeader';
 
   element: Element | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.element = Reflect.has(data, 'elementRenderer') ? Parser.parseItem<Element>(data, Element) : null;
+    this.element = Reflect.has(data, 'elementRenderer') ? Parser.parseItem(data, Element) : null;
   }
-}
-
-export default MusicElementHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicHeader.ts b/src/parser/classes/MusicHeader.ts
index 0e9beda7..4b75d255 100644
--- a/src/parser/classes/MusicHeader.ts
+++ b/src/parser/classes/MusicHeader.ts
@@ -1,24 +1,22 @@
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 import Text from './misc/Text.js';
 
-class MusicHeader extends YTNode {
+export default class MusicHeader extends YTNode {
   static type = 'MusicHeader';
 
-  header?;
+  header?: YTNode;
   title?: Text;
 
   constructor(data: RawNode) {
     super();
 
-    if (data.header) {
+    if (Reflect.has(data, 'header')) {
       this.header = Parser.parseItem(data.header);
     }
 
-    if (data.title) {
+    if (Reflect.has(data, 'title')) {
       this.title = new Text(data.title);
     }
   }
-}
-
-export default MusicHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicImmersiveHeader.ts b/src/parser/classes/MusicImmersiveHeader.ts
index 8c2001cb..e0213eee 100644
--- a/src/parser/classes/MusicImmersiveHeader.ts
+++ b/src/parser/classes/MusicImmersiveHeader.ts
@@ -1,21 +1,20 @@
-import Text from './misc/Text.js';
-import Parser from '../index.js';
-import MusicThumbnail from './MusicThumbnail.js';
-
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import MusicThumbnail from './MusicThumbnail.js';
+import Text from './misc/Text.js';
 
-class MusicImmersiveHeader extends YTNode {
+export default class MusicImmersiveHeader extends YTNode {
   static type = 'MusicImmersiveHeader';
 
   title: Text;
   description: Text;
   thumbnail: MusicThumbnail | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.description = new Text(data.description);
-    this.thumbnail = Parser.parseItem<MusicThumbnail>(data.thumbnail, MusicThumbnail);
+    this.thumbnail = Parser.parseItem(data.thumbnail, MusicThumbnail);
     /**
          Not useful for now.
          this.menu = Parser.parse(data.menu);
@@ -23,6 +22,4 @@ class MusicImmersiveHeader extends YTNode {
          this.start_radio_button = Parser.parse(data.startRadioButton);
      */
   }
-}
-
-export default MusicImmersiveHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicInlineBadge.ts b/src/parser/classes/MusicInlineBadge.ts
index b3aec0eb..9b53e0f0 100644
--- a/src/parser/classes/MusicInlineBadge.ts
+++ b/src/parser/classes/MusicInlineBadge.ts
@@ -1,16 +1,15 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicInlineBadge extends YTNode {
+export default class MusicInlineBadge extends YTNode {
   static type = 'MusicInlineBadge';
 
   icon_type: string;
   label: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.icon_type = data.icon.iconType;
     this.label = data.accessibilityData.accessibilityData.label;
   }
-}
-
-export default MusicInlineBadge;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicItemThumbnailOverlay.ts b/src/parser/classes/MusicItemThumbnailOverlay.ts
index ba8dfd59..097e8de1 100644
--- a/src/parser/classes/MusicItemThumbnailOverlay.ts
+++ b/src/parser/classes/MusicItemThumbnailOverlay.ts
@@ -1,20 +1,18 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import MusicPlayButton from './MusicPlayButton.js';
 import { YTNode } from '../helpers.js';
 
-class MusicItemThumbnailOverlay extends YTNode {
+export default class MusicItemThumbnailOverlay extends YTNode {
   static type = 'MusicItemThumbnailOverlay';
 
-  content;
-  content_position;
+  content: MusicPlayButton | null;
+  content_position: string;
   display_style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.content = Parser.parseItem<MusicPlayButton>(data.content, MusicPlayButton);
+    this.content = Parser.parseItem(data.content, MusicPlayButton);
     this.content_position = data.contentPosition;
     this.display_style = data.displayStyle;
   }
-}
-
-export default MusicItemThumbnailOverlay;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicLargeCardItemCarousel.ts b/src/parser/classes/MusicLargeCardItemCarousel.ts
index 023c4090..7669401a 100644
--- a/src/parser/classes/MusicLargeCardItemCarousel.ts
+++ b/src/parser/classes/MusicLargeCardItemCarousel.ts
@@ -1,5 +1,6 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
 class ActionButton {
   static type = 'ActionButton';
@@ -9,7 +10,7 @@ class ActionButton {
   a11y_text: string;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     this.icon_name = data.iconName;
     this.endpoint = new NavigationEndpoint(data.onTap);
     this.a11y_text = data.a11yText;
@@ -32,28 +33,26 @@ class Panel {
   caption: string;
   action_buttons: ActionButton[];
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     this.image = data.image.image.sources;
     this.content_mode = data.image.contentMode;
     this.crop_options = data.image.cropOptions;
     this.image_aspect_ratio = data.imageAspectRatio;
     this.caption = data.caption;
-    this.action_buttons = data.actionButtons.map((el: any) => new ActionButton(el));
+    this.action_buttons = data.actionButtons.map((el: RawNode) => new ActionButton(el));
   }
 }
 
-class MusicLargeCardItemCarousel extends YTNode {
+export default class MusicLargeCardItemCarousel extends YTNode {
   static type = 'MusicLargeCardItemCarousel';
 
   panels: Panel[];
   header;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     // TODO: check this
     this.header = data.shelf.header;
-    this.panels = data.shelf.panels.map((el: any) => new Panel(el));
+    this.panels = data.shelf.panels.map((el: RawNode) => new Panel(el));
   }
-}
-
-export default MusicLargeCardItemCarousel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicNavigationButton.ts b/src/parser/classes/MusicNavigationButton.ts
index 2f7cf882..5dc2b2f2 100644
--- a/src/parser/classes/MusicNavigationButton.ts
+++ b/src/parser/classes/MusicNavigationButton.ts
@@ -1,18 +1,17 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicNavigationButton extends YTNode {
+export default class MusicNavigationButton extends YTNode {
   static type = 'MusicNavigationButton';
 
   button_text: string;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.button_text = new Text(data.buttonText).toString();
     this.endpoint = new NavigationEndpoint(data.clickCommand);
   }
-}
-
-export default MusicNavigationButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicPlayButton.ts b/src/parser/classes/MusicPlayButton.ts
index 726d84b1..c2caaef3 100644
--- a/src/parser/classes/MusicPlayButton.ts
+++ b/src/parser/classes/MusicPlayButton.ts
@@ -1,32 +1,31 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicPlayButton extends YTNode {
+export default class MusicPlayButton extends YTNode {
   static type = 'MusicPlayButton';
 
   endpoint: NavigationEndpoint;
   play_icon_type: string;
   pause_icon_type: string;
-  play_label;
-  pause_label;
+  play_label?: string;
+  pause_label?: string;
   icon_color: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.endpoint = new NavigationEndpoint(data.playNavigationEndpoint);
     this.play_icon_type = data.playIcon.iconType;
     this.pause_icon_type = data.pauseIcon.iconType;
 
-    if (data.accessibilityPlayData) {
-      this.play_label = data.accessibilityPlayData.accessibilityData.label;
+    if (Reflect.has(data, 'accessibilityPlayData')) {
+      this.play_label = data.accessibilityPlayData.accessibilityData?.label;
     }
 
-    if (data.accessibilityPlayData) {
-      this.pause_label = data.accessibilityPauseData?.accessibilityData.label;
+    if (Reflect.has(data, 'accessibilityPauseData')) {
+      this.pause_label = data.accessibilityPauseData.accessibilityData?.label;
     }
 
     this.icon_color = data.iconColor;
   }
-}
-
-export default MusicPlayButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicPlaylistShelf.ts b/src/parser/classes/MusicPlaylistShelf.ts
index a4da4ea1..84fb5cff 100644
--- a/src/parser/classes/MusicPlaylistShelf.ts
+++ b/src/parser/classes/MusicPlaylistShelf.ts
@@ -1,24 +1,20 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import MusicResponsiveListItem from './MusicResponsiveListItem.js';
 
-import { YTNode } from '../helpers.js';
-
-class MusicPlaylistShelf extends YTNode {
+export default class MusicPlaylistShelf extends YTNode {
   static type = 'MusicPlaylistShelf';
 
   playlist_id: string;
-  contents;
+  contents: ObservedArray<MusicResponsiveListItem>;
   collapsed_item_count: number;
   continuation: string | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.playlist_id = data.playlistId;
-    this.contents = Parser.parseArray<MusicResponsiveListItem>(data.contents, MusicResponsiveListItem);
+    this.contents = Parser.parseArray(data.contents, MusicResponsiveListItem);
     this.collapsed_item_count = data.collapsedItemCount;
     this.continuation = data.continuations?.[0]?.nextContinuationData?.continuation || null;
   }
-}
-
-export default MusicPlaylistShelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicQueue.ts b/src/parser/classes/MusicQueue.ts
index c0c40f1d..55ef8321 100644
--- a/src/parser/classes/MusicQueue.ts
+++ b/src/parser/classes/MusicQueue.ts
@@ -1,16 +1,14 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import PlaylistPanel from './PlaylistPanel.js';
 import { YTNode } from '../helpers.js';
 
-class MusicQueue extends YTNode {
+export default class MusicQueue extends YTNode {
   static type = 'MusicQueue';
 
   content: PlaylistPanel | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.content = Parser.parseItem<PlaylistPanel>(data.content, PlaylistPanel);
+    this.content = Parser.parseItem(data.content, PlaylistPanel);
   }
-}
-
-export default MusicQueue;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicResponsiveListItem.ts b/src/parser/classes/MusicResponsiveListItem.ts
index 7d1f4e66..56900545 100644
--- a/src/parser/classes/MusicResponsiveListItem.ts
+++ b/src/parser/classes/MusicResponsiveListItem.ts
@@ -19,7 +19,10 @@ export default class MusicResponsiveListItem extends YTNode {
 
   flex_columns: ObservedArray<MusicResponsiveListItemFlexColumn>;
   fixed_columns: ObservedArray<MusicResponsiveListItemFixedColumn>;
-  #playlist_item_data;
+  #playlist_item_data: {
+    video_id: string;
+    playlist_set_video_id: string;
+  };
 
   endpoint: NavigationEndpoint | null;
   item_type: 'album' | 'playlist' | 'artist' | 'library_artist' | 'video' | 'song' | 'endpoint' | 'unknown' | undefined;
diff --git a/src/parser/classes/MusicResponsiveListItemFixedColumn.ts b/src/parser/classes/MusicResponsiveListItemFixedColumn.ts
index 69d3a563..868f4855 100644
--- a/src/parser/classes/MusicResponsiveListItemFixedColumn.ts
+++ b/src/parser/classes/MusicResponsiveListItemFixedColumn.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicResponsiveListItemFixedColumn extends YTNode {
+export default class MusicResponsiveListItemFixedColumn extends YTNode {
   static type = 'musicResponsiveListItemFlexColumnRenderer';
 
   title: Text;
   display_priority: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.text);
     this.display_priority = data.displayPriority;
   }
-}
-
-export default MusicResponsiveListItemFixedColumn;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicResponsiveListItemFlexColumn.ts b/src/parser/classes/MusicResponsiveListItemFlexColumn.ts
index 6375d92b..4e17987f 100644
--- a/src/parser/classes/MusicResponsiveListItemFlexColumn.ts
+++ b/src/parser/classes/MusicResponsiveListItemFlexColumn.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicResponsiveListItemFlexColumn extends YTNode {
-  static type = 'musicResponsiveListItemFlexColumnRenderer';
+export default class MusicResponsiveListItemFlexColumn extends YTNode {
+  static type = 'MusicResponsiveListItemFlexColumn';
 
   title: Text;
   display_priority: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.text);
     this.display_priority = data.displayPriority;
   }
-}
-
-export default MusicResponsiveListItemFlexColumn;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicShelf.ts b/src/parser/classes/MusicShelf.ts
index f954bdab..81ce69a3 100644
--- a/src/parser/classes/MusicShelf.ts
+++ b/src/parser/classes/MusicShelf.ts
@@ -1,49 +1,46 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import MusicResponsiveListItem from './MusicResponsiveListItem.js';
-
-import { YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
+import MusicResponsiveListItem from './MusicResponsiveListItem.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class MusicShelf extends YTNode {
+export default class MusicShelf extends YTNode {
   static type = 'MusicShelf';
 
   title: Text;
-  contents;
+  contents: ObservedArray<MusicResponsiveListItem>;
   endpoint?: NavigationEndpoint;
   continuation?: string;
   bottom_text?: Text;
   bottom_button?: Button | null;
-  subheaders?: Array<any>;
+  subheaders?: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
-    this.contents = Parser.parseArray<MusicResponsiveListItem>(data.contents, MusicResponsiveListItem);
+    this.contents = Parser.parseArray(data.contents, MusicResponsiveListItem);
 
-    if (data.bottomEndpoint) {
+    if (Reflect.has(data, 'bottomEndpoint')) {
       this.endpoint = new NavigationEndpoint(data.bottomEndpoint);
     }
 
-    if (data.continuations) {
+    if (Reflect.has(data, 'continuations')) {
       this.continuation =
         data.continuations?.[0].nextContinuationData?.continuation ||
         data.continuations?.[0].reloadContinuationData?.continuation;
     }
 
-    if (data.bottomText) {
+    if (Reflect.has(data, 'bottomText')) {
       this.bottom_text = new Text(data.bottomText);
     }
 
-    if (data.bottomButton) {
+    if (Reflect.has(data, 'bottomButton')) {
       this.bottom_button = Parser.parseItem(data.bottomButton, Button);
     }
 
-    if (data.subheaders) {
+    if (Reflect.has(data, 'subheaders')) {
       this.subheaders = Parser.parseArray(data.subheaders);
     }
   }
-}
-
-export default MusicShelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicSideAlignedItem.ts b/src/parser/classes/MusicSideAlignedItem.ts
index e5cddae4..319b7a61 100644
--- a/src/parser/classes/MusicSideAlignedItem.ts
+++ b/src/parser/classes/MusicSideAlignedItem.ts
@@ -1,24 +1,20 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-import { YTNode } from '../helpers.js';
-
-class MusicSideAlignedItem extends YTNode {
+export default class MusicSideAlignedItem extends YTNode {
   static type = 'MusicSideAlignedItem';
 
-  start_items?;
-  end_items?;
+  start_items?: ObservedArray<YTNode>;
+  end_items?: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
-    if (data.startItems) {
+    if (Reflect.has(data, 'startItems')) {
       this.start_items = Parser.parseArray(data.startItems);
     }
 
-    if (data.endItems) {
+    if (Reflect.has(data, 'endItems')) {
       this.end_items = Parser.parseArray(data.endItems);
     }
   }
-}
-
-export default MusicSideAlignedItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicSortFilterButton.ts b/src/parser/classes/MusicSortFilterButton.ts
index ec16e01f..a75ba662 100644
--- a/src/parser/classes/MusicSortFilterButton.ts
+++ b/src/parser/classes/MusicSortFilterButton.ts
@@ -1,23 +1,24 @@
-import Parser from '../index.js';
-
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import MusicMultiSelectMenu from './menus/MusicMultiSelectMenu.js';
 import Text from './misc/Text.js';
 
-class MusicSortFilterButton extends YTNode {
+export default class MusicSortFilterButton extends YTNode {
   static type = 'MusicSortFilterButton';
 
   title: string;
-  icon_type: string;
+  icon_type?: string;
   menu: MusicMultiSelectMenu | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     this.title = new Text(data.title).toString();
-    this.icon_type = data.icon?.icon_type || null;
+
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon.iconType;
+    }
+
     this.menu = Parser.parseItem(data.menu, MusicMultiSelectMenu);
   }
-}
-
-export default MusicSortFilterButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicThumbnail.ts b/src/parser/classes/MusicThumbnail.ts
index 588305a0..9b33786e 100644
--- a/src/parser/classes/MusicThumbnail.ts
+++ b/src/parser/classes/MusicThumbnail.ts
@@ -1,15 +1,14 @@
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class MusicThumbnail extends YTNode {
+export default class MusicThumbnail extends YTNode {
   static type = 'MusicThumbnail';
 
-  contents;
+  contents: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.contents = Thumbnail.fromResponse(data.thumbnail);
   }
-}
-
-export default MusicThumbnail;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicTwoRowItem.ts b/src/parser/classes/MusicTwoRowItem.ts
index fff93691..efdb1385 100644
--- a/src/parser/classes/MusicTwoRowItem.ts
+++ b/src/parser/classes/MusicTwoRowItem.ts
@@ -1,26 +1,23 @@
-// TODO: refactor this
+// TODO: Refactor this.
 
-import Parser from '../index.js';
+import { YTNode, type SuperParsedResult } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import MusicItemThumbnailOverlay from './MusicItemThumbnailOverlay.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Menu from './menus/Menu.js';
 import Text from './misc/Text.js';
 import TextRun from './misc/TextRun.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import MusicItemThumbnailOverlay from './MusicItemThumbnailOverlay.js';
-import Menu from './menus/Menu.js';
 
-import { YTNode } from '../helpers.js';
-
-class MusicTwoRowItem extends YTNode {
+export default class MusicTwoRowItem extends YTNode {
   static type = 'MusicTwoRowItem';
 
   title: Text;
   endpoint: NavigationEndpoint;
   id: string | undefined;
   subtitle: Text;
-  badges;
-
+  badges: SuperParsedResult<YTNode> | null;
   item_type: string;
-
   subscribers?: string;
   item_count?: string | null;
   year?: string;
@@ -39,10 +36,10 @@ class MusicTwoRowItem extends YTNode {
   };
 
   thumbnail: Thumbnail[];
-  thumbnail_overlay;
-  menu;
+  thumbnail_overlay: MusicItemThumbnailOverlay | null;
+  menu: Menu | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
@@ -123,9 +120,7 @@ class MusicTwoRowItem extends YTNode {
     }
 
     this.thumbnail = Thumbnail.fromResponse(data.thumbnailRenderer.musicThumbnailRenderer.thumbnail);
-    this.thumbnail_overlay = Parser.parseItem<MusicItemThumbnailOverlay>(data.thumbnailOverlay, MusicItemThumbnailOverlay);
-    this.menu = Parser.parseItem<Menu>(data.menu, Menu);
+    this.thumbnail_overlay = Parser.parseItem(data.thumbnailOverlay, MusicItemThumbnailOverlay);
+    this.menu = Parser.parseItem(data.menu, Menu);
   }
-}
-
-export default MusicTwoRowItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/MusicVisualHeader.ts b/src/parser/classes/MusicVisualHeader.ts
index bdb7a4b0..b9f4b19d 100644
--- a/src/parser/classes/MusicVisualHeader.ts
+++ b/src/parser/classes/MusicVisualHeader.ts
@@ -1,25 +1,22 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Menu from './menus/Menu.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import Menu from './menus/Menu.js';
 
-class MusicVisualHeader extends YTNode {
+export default class MusicVisualHeader extends YTNode {
   static type = 'MusicVisualHeader';
 
-  title;
-  thumbnails;
-  menu;
-  foreground_thumbnails;
+  title: Text;
+  thumbnail: Thumbnail[];
+  menu: Menu | null;
+  foreground_thumbnail: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.title = new Text(data.title);
-    this.thumbnails = data.thumbnail ? Thumbnail.fromResponse(data.thumbnail.musicThumbnailRenderer?.thumbnail) : [];
+    this.thumbnail = data.thumbnail ? Thumbnail.fromResponse(data.thumbnail.musicThumbnailRenderer?.thumbnail) : [];
     this.menu = Parser.parseItem(data.menu, Menu);
-    this.foreground_thumbnails = data.foregroundThumbnail ? Thumbnail.fromResponse(data.foregroundThumbnail.musicThumbnailRenderer?.thumbnail) : [];
+    this.foreground_thumbnail = data.foregroundThumbnail ? Thumbnail.fromResponse(data.foregroundThumbnail.musicThumbnailRenderer?.thumbnail) : [];
   }
-}
-
-export default MusicVisualHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/NavigationEndpoint.ts b/src/parser/classes/NavigationEndpoint.ts
index 0f28216e..cf51c3e7 100644
--- a/src/parser/classes/NavigationEndpoint.ts
+++ b/src/parser/classes/NavigationEndpoint.ts
@@ -1,15 +1,15 @@
-import Parser from '../index.js';
 import type Actions from '../../core/Actions.js';
 import type { ApiResponse } from '../../core/Actions.js';
+import { type SuperParsedResult, YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import type { IParsedResponse } from '../types/ParsedResponse.js';
-import { YTNode } from '../helpers.js';
 import CreatePlaylistDialog from './CreatePlaylistDialog.js';
 
-class NavigationEndpoint extends YTNode {
+export default class NavigationEndpoint extends YTNode {
   static type = 'NavigationEndpoint';
 
   payload;
-  dialog?;
+  dialog?: CreatePlaylistDialog | SuperParsedResult<YTNode> | null;
 
   metadata: {
     url?: string;
@@ -18,7 +18,7 @@ class NavigationEndpoint extends YTNode {
     send_post?: boolean;
   };
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     if (Reflect.has(data || {}, 'innertubeCommand'))
@@ -105,6 +105,4 @@ class NavigationEndpoint extends YTNode {
         this.metadata.url : `https://www.youtube.com${this.metadata.url}`
     );
   }
-}
-
-export default NavigationEndpoint;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Notification.ts b/src/parser/classes/Notification.ts
index 05f0fb97..d9426975 100644
--- a/src/parser/classes/Notification.ts
+++ b/src/parser/classes/Notification.ts
@@ -1,10 +1,10 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class Notification extends YTNode {
+export default class Notification extends YTNode {
   static type = 'Notification';
 
   thumbnails: Thumbnail[];
@@ -14,7 +14,7 @@ class Notification extends YTNode {
   notification_id: string;
   endpoint: NavigationEndpoint;
   record_click_endpoint: NavigationEndpoint;
-  menu;
+  menu: YTNode;
   read: boolean;
 
   constructor(data: RawNode) {
@@ -29,6 +29,4 @@ class Notification extends YTNode {
     this.menu = Parser.parseItem(data.contextualMenu);
     this.read = data.read;
   }
-}
-
-export default Notification;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PageIntroduction.ts b/src/parser/classes/PageIntroduction.ts
index f5ff02bf..f73ee3e2 100644
--- a/src/parser/classes/PageIntroduction.ts
+++ b/src/parser/classes/PageIntroduction.ts
@@ -1,7 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class PageIntroduction extends YTNode {
+export default class PageIntroduction extends YTNode {
   static type = 'PageIntroduction';
 
   header_text: string;
@@ -9,13 +10,11 @@ class PageIntroduction extends YTNode {
   page_title: string;
   header_icon_type: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.header_text = new Text(data.headerText).toString();
     this.body_text = new Text(data.bodyText).toString();
     this.page_title = new Text(data.pageTitle).toString();
     this.header_icon_type = data.headerIcon.iconType;
   }
-}
-
-export default PageIntroduction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerAnnotationsExpanded.ts b/src/parser/classes/PlayerAnnotationsExpanded.ts
index 37b63774..fc5d909f 100644
--- a/src/parser/classes/PlayerAnnotationsExpanded.ts
+++ b/src/parser/classes/PlayerAnnotationsExpanded.ts
@@ -1,9 +1,9 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class PlayerAnnotationsExpanded extends YTNode {
+export default class PlayerAnnotationsExpanded extends YTNode {
   static type = 'PlayerAnnotationsExpanded';
 
   featured_channel?: {
@@ -35,6 +35,4 @@ class PlayerAnnotationsExpanded extends YTNode {
     this.allow_swipe_dismiss = data.allowSwipeDismiss;
     this.annotation_id = data.annotationId;
   }
-}
-
-export default PlayerAnnotationsExpanded;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerCaptionsTracklist.ts b/src/parser/classes/PlayerCaptionsTracklist.ts
index 0aedcaa7..48311612 100644
--- a/src/parser/classes/PlayerCaptionsTracklist.ts
+++ b/src/parser/classes/PlayerCaptionsTracklist.ts
@@ -1,8 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import type { RawNode } from '../index.js';
 
-class PlayerCaptionsTracklist extends YTNode {
+export default class PlayerCaptionsTracklist extends YTNode {
   static type = 'PlayerCaptionsTracklist';
 
   caption_tracks?: {
@@ -32,7 +32,6 @@ class PlayerCaptionsTracklist extends YTNode {
 
   constructor(data: RawNode) {
     super();
-
     if (Reflect.has(data, 'captionTracks')) {
       this.caption_tracks = data.captionTracks.map((ct: any) => ({
         base_url: ct.baseUrl,
@@ -66,6 +65,4 @@ class PlayerCaptionsTracklist extends YTNode {
       }));
     }
   }
-}
-
-export default PlayerCaptionsTracklist;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerErrorMessage.ts b/src/parser/classes/PlayerErrorMessage.ts
index f21d636b..8cecb16f 100644
--- a/src/parser/classes/PlayerErrorMessage.ts
+++ b/src/parser/classes/PlayerErrorMessage.ts
@@ -1,27 +1,27 @@
-import Parser from '../index.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import Button from './Button.js';
 
-import { YTNode } from '../helpers.js';
-
-class PlayerErrorMessage extends YTNode {
+export default class PlayerErrorMessage extends YTNode {
   static type = 'PlayerErrorMessage';
 
   subreason: Text;
   reason: Text;
   proceed_button: Button | null;
   thumbnails: Thumbnail[];
-  icon_type: string | null;
+  icon_type?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.subreason = new Text(data.subreason);
     this.reason = new Text(data.reason);
-    this.proceed_button = Parser.parseItem<Button>(data.proceedButton, Button);
+    this.proceed_button = Parser.parseItem(data.proceedButton, Button);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
-    this.icon_type = data.icon?.iconType || null;
-  }
-}
 
-export default PlayerErrorMessage;
\ No newline at end of file
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon.iconType;
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerLegacyDesktopYpcOffer.ts b/src/parser/classes/PlayerLegacyDesktopYpcOffer.ts
index dc847300..7463aee2 100644
--- a/src/parser/classes/PlayerLegacyDesktopYpcOffer.ts
+++ b/src/parser/classes/PlayerLegacyDesktopYpcOffer.ts
@@ -1,7 +1,7 @@
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
 
-class PlayerLegacyDesktopYpcOffer extends YTNode {
+export default class PlayerLegacyDesktopYpcOffer extends YTNode {
   static type = 'PlayerLegacyDesktopYpcOffer';
 
   title: string;
@@ -16,6 +16,4 @@ class PlayerLegacyDesktopYpcOffer extends YTNode {
     this.offer_description = data.offerDescription;
     this.offer_id = data.offerId;
   }
-}
-
-export default PlayerLegacyDesktopYpcOffer;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerLegacyDesktopYpcTrailer.ts b/src/parser/classes/PlayerLegacyDesktopYpcTrailer.ts
index 277499a0..779912f9 100644
--- a/src/parser/classes/PlayerLegacyDesktopYpcTrailer.ts
+++ b/src/parser/classes/PlayerLegacyDesktopYpcTrailer.ts
@@ -1,8 +1,8 @@
 import { YTNode } from '../helpers.js';
-import { Parser, RawNode } from '../index.js';
+import { Parser, type RawNode } from '../index.js';
 import YpcTrailer from './YpcTrailer.js';
 
-class PlayerLegacyDesktopYpcTrailer extends YTNode {
+export default class PlayerLegacyDesktopYpcTrailer extends YTNode {
   static type = 'PlayerLegacyDesktopYpcTrailer';
 
   video_id: string;
@@ -25,8 +25,6 @@ class PlayerLegacyDesktopYpcTrailer extends YTNode {
     this.offer_id = data.offerId;
     this.offer_button_text = data.offerButtonText;
     this.video_message = data.fullVideoMessage;
-    this.trailer = Parser.parseItem<YpcTrailer>(data.ypcTrailer, YpcTrailer);
+    this.trailer = Parser.parseItem(data.ypcTrailer, YpcTrailer);
   }
-}
-
-export default PlayerLegacyDesktopYpcTrailer;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerLiveStoryboardSpec.ts b/src/parser/classes/PlayerLiveStoryboardSpec.ts
index 78ed155f..a714cb82 100644
--- a/src/parser/classes/PlayerLiveStoryboardSpec.ts
+++ b/src/parser/classes/PlayerLiveStoryboardSpec.ts
@@ -1,6 +1,6 @@
 import { YTNode } from '../helpers.js';
 
-class PlayerLiveStoryboardSpec extends YTNode {
+export default class PlayerLiveStoryboardSpec extends YTNode {
   static type = 'PlayerLiveStoryboardSpec';
 
   constructor() {
@@ -8,6 +8,4 @@ class PlayerLiveStoryboardSpec extends YTNode {
     // TODO: A little bit different from PlayerLiveStoryboardSpec
     // https://i.ytimg.com/sb/5qap5aO4i9A/storyboard_live_90_2x2_b2/M$M.jpg?rs=AOn4CLC9s6IeOsw_gKvEbsbU9y-e2FVRTw#159#90#2#2
   }
-}
-
-export default PlayerLiveStoryboardSpec;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerMicroformat.ts b/src/parser/classes/PlayerMicroformat.ts
index 814509cc..9d6681f2 100644
--- a/src/parser/classes/PlayerMicroformat.ts
+++ b/src/parser/classes/PlayerMicroformat.ts
@@ -1,22 +1,23 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import { YTNode } from '../helpers.js';
 
-class PlayerMicroformat extends YTNode {
+export default class PlayerMicroformat extends YTNode {
   static type = 'PlayerMicroformat';
 
   title: Text;
   description: Text;
   thumbnails;
 
-  embed: {
+  embed?: {
     iframe_url: string;
     flash_url: string;
     flash_secure_url: string;
     // TODO: check these
     width: any;
     height: any;
-  } | null;
+  };
 
   length_seconds: number;
 
@@ -36,13 +37,13 @@ class PlayerMicroformat extends YTNode {
   available_countries: string[];
   start_timestamp: Date | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.description = new Text(data.description);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
 
-    if (data.embed) {
+    if (Reflect.has(data, 'embed')) {
       this.embed = {
         iframe_url: data.embed.iframeUrl,
         flash_url: data.embed.flashUrl,
@@ -50,8 +51,6 @@ class PlayerMicroformat extends YTNode {
         width: data.embed.width,
         height: data.embed.height
       };
-    } else {
-      this.embed = null;
     }
 
     this.length_seconds = parseInt(data.lengthSeconds);
@@ -72,6 +71,4 @@ class PlayerMicroformat extends YTNode {
     this.available_countries = data.availableCountries;
     this.start_timestamp = data.liveBroadcastDetails?.startTimestamp ? new Date(data.liveBroadcastDetails.startTimestamp) : null;
   }
-}
-
-export default PlayerMicroformat;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerOverlay.ts b/src/parser/classes/PlayerOverlay.ts
index bfe73123..7a91224c 100644
--- a/src/parser/classes/PlayerOverlay.ts
+++ b/src/parser/classes/PlayerOverlay.ts
@@ -1,22 +1,21 @@
-import Parser, { RawNode } from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import DecoratedPlayerBar from './DecoratedPlayerBar.js';
-import Menu from './menus/Menu.js';
 import PlayerOverlayAutoplay from './PlayerOverlayAutoplay.js';
 import WatchNextEndScreen from './WatchNextEndScreen.js';
+import Menu from './menus/Menu.js';
 
-import { YTNode } from '../helpers.js';
-
-class PlayerOverlay extends YTNode {
+export default class PlayerOverlay extends YTNode {
   static type = 'PlayerOverlay';
 
   end_screen: WatchNextEndScreen | null;
   autoplay: PlayerOverlayAutoplay | null;
   share_button: Button | null;
   add_to_menu: Menu | null;
-  fullscreen_engagement;
-  actions;
-  browser_media_session;
+  fullscreen_engagement: YTNode | null;
+  actions: ObservedArray<YTNode>;
+  browser_media_session: YTNode | null;
   decorated_player_bar: DecoratedPlayerBar | null;
 
   constructor(data: RawNode) {
@@ -30,6 +29,4 @@ class PlayerOverlay extends YTNode {
     this.browser_media_session = Parser.parseItem(data.browserMediaSession);
     this.decorated_player_bar = Parser.parseItem(data.decoratedPlayerBarRenderer, DecoratedPlayerBar);
   }
-}
-
-export default PlayerOverlay;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerOverlayAutoplay.ts b/src/parser/classes/PlayerOverlayAutoplay.ts
index a9ce2009..4b5fc97a 100644
--- a/src/parser/classes/PlayerOverlayAutoplay.ts
+++ b/src/parser/classes/PlayerOverlayAutoplay.ts
@@ -1,22 +1,25 @@
-import Parser, { RawNode } from '../index.js';
-import Text from './misc/Text.js';
-import Author from './misc/Author.js';
-import Thumbnail from './misc/Thumbnail.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
-import { YTNode } from '../helpers.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class PlayerOverlayAutoplay extends YTNode {
+export default class PlayerOverlayAutoplay extends YTNode {
   static type = 'PlayerOverlayAutoplay';
 
   title: Text;
   video_id: string;
   video_title: Text;
   short_view_count: Text;
-  prefer_immediate_redirect: any;
-  count_down_secs_for_fullscreen: any;
+
+  // @TODO: Find out what these are.
+  prefer_immediate_redirect;
+  count_down_secs_for_fullscreen;
+
   published: Text;
   background: Thumbnail[];
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
   author: Author;
   cancel_button: Button | null;
   next_button: Button | null;
@@ -38,6 +41,4 @@ class PlayerOverlayAutoplay extends YTNode {
     this.next_button = Parser.parseItem(data.nextButton, Button);
     this.close_button = Parser.parseItem(data.closeButton, Button);
   }
-}
-
-export default PlayerOverlayAutoplay;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlayerStoryboardSpec.ts b/src/parser/classes/PlayerStoryboardSpec.ts
index 1f6d655c..9a5d1143 100644
--- a/src/parser/classes/PlayerStoryboardSpec.ts
+++ b/src/parser/classes/PlayerStoryboardSpec.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class PlayerStoryboardSpec extends YTNode {
+export default class PlayerStoryboardSpec extends YTNode {
   static type = 'PlayerStoryboardSpec';
 
   boards: {
@@ -14,7 +15,7 @@ class PlayerStoryboardSpec extends YTNode {
     storyboard_count: number;
   };
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     const parts = data.spec.split('|');
@@ -39,6 +40,4 @@ class PlayerStoryboardSpec extends YTNode {
       };
     });
   }
-}
-
-export default PlayerStoryboardSpec;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Playlist.ts b/src/parser/classes/Playlist.ts
index 1d70b32c..9f215180 100644
--- a/src/parser/classes/Playlist.ts
+++ b/src/parser/classes/Playlist.ts
@@ -1,11 +1,11 @@
-import Text from './misc/Text.js';
-import Parser from '../index.js';
-import Thumbnail from './misc/Thumbnail.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Author from './misc/Author.js';
-import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class Playlist extends YTNode {
+export default class Playlist extends YTNode {
   static type = 'Playlist';
 
   id: string;
@@ -14,15 +14,15 @@ class Playlist extends YTNode {
   thumbnails: Thumbnail[];
   video_count: Text;
   video_count_short: Text;
-  first_videos;
+  first_videos: ObservedArray<YTNode>;
   share_url: string | null;
-  menu;
-  badges;
+  menu: YTNode;
+  badges: ObservedArray<YTNode>;
   endpoint: NavigationEndpoint;
   thumbnail_overlays;
   view_playlist?: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.playlistId;
     this.title = new Text(data.title);
@@ -41,10 +41,8 @@ class Playlist extends YTNode {
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
 
-    if (data.viewPlaylistText) {
+    if (Reflect.has(data, 'viewPlaylistText')) {
       this.view_playlist = new Text(data.viewPlaylistText);
     }
   }
-}
-
-export default Playlist;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistCustomThumbnail.ts b/src/parser/classes/PlaylistCustomThumbnail.ts
index d385f78e..65676ec8 100644
--- a/src/parser/classes/PlaylistCustomThumbnail.ts
+++ b/src/parser/classes/PlaylistCustomThumbnail.ts
@@ -1,15 +1,14 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-class PlaylistCustomThumbnail extends YTNode {
+export default class PlaylistCustomThumbnail extends YTNode {
   static type = 'PlaylistCustomThumbnail';
 
   thumbnail: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
   }
-}
-
-export default PlaylistCustomThumbnail;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistHeader.ts b/src/parser/classes/PlaylistHeader.ts
index 26cb9148..9c8a0711 100644
--- a/src/parser/classes/PlaylistHeader.ts
+++ b/src/parser/classes/PlaylistHeader.ts
@@ -1,9 +1,9 @@
 import Text from './misc/Text.js';
 import Author from './misc/Author.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class PlaylistHeader extends YTNode {
+export default class PlaylistHeader extends YTNode {
   static type = 'PlaylistHeader';
 
   id: string;
@@ -18,17 +18,17 @@ class PlaylistHeader extends YTNode {
   can_delete: boolean;
   is_editable: boolean;
   privacy: string;
-  save_button;
-  shuffle_play_button;
-  menu;
-  banner;
+  save_button: YTNode;
+  shuffle_play_button: YTNode;
+  menu: YTNode;
+  banner: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.id = data.playlistId;
     this.title = new Text(data.title);
-    this.stats = data.stats.map((stat: any) => new Text(stat));
-    this.brief_stats = data.briefStats.map((stat: any) => new Text(stat));
+    this.stats = data.stats.map((stat: RawNode) => new Text(stat));
+    this.brief_stats = data.briefStats.map((stat: RawNode) => new Text(stat));
     this.author = new Author({ ...data.ownerText, navigationEndpoint: data.ownerEndpoint }, data.ownerBadges, null);
     this.description = new Text(data.descriptionText);
     this.num_videos = new Text(data.numVideosText);
@@ -42,6 +42,4 @@ class PlaylistHeader extends YTNode {
     this.menu = Parser.parseItem(data.moreActionsMenu);
     this.banner = Parser.parseItem(data.playlistHeaderBanner);
   }
-}
-
-export default PlaylistHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistInfoCardContent.ts b/src/parser/classes/PlaylistInfoCardContent.ts
index 688d2054..aa3b81bb 100644
--- a/src/parser/classes/PlaylistInfoCardContent.ts
+++ b/src/parser/classes/PlaylistInfoCardContent.ts
@@ -2,8 +2,9 @@ import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class PlaylistInfoCardContent extends YTNode {
+export default class PlaylistInfoCardContent extends YTNode {
   static type = 'PlaylistInfoCardContent';
 
   title: Text;
@@ -12,7 +13,7 @@ class PlaylistInfoCardContent extends YTNode {
   channel_name: Text;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.playlistTitle);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
@@ -20,6 +21,4 @@ class PlaylistInfoCardContent extends YTNode {
     this.channel_name = new Text(data.channelName);
     this.endpoint = new NavigationEndpoint(data.action);
   }
-}
-
-export default PlaylistInfoCardContent;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistMetadata.ts b/src/parser/classes/PlaylistMetadata.ts
index 2252e1f7..dd526490 100644
--- a/src/parser/classes/PlaylistMetadata.ts
+++ b/src/parser/classes/PlaylistMetadata.ts
@@ -1,17 +1,16 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class PlaylistMetadata extends YTNode {
+export default class PlaylistMetadata extends YTNode {
   static type = 'PlaylistMetadata';
 
   title: string;
   description: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = data.title;
     this.description = data.description || null;
-    // XXX: Appindexing should be in microformat
+    // XXX: Appindexing should be in microformat.
   }
-}
-
-export default PlaylistMetadata;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistPanel.ts b/src/parser/classes/PlaylistPanel.ts
index 12beb1a8..5868b0a7 100644
--- a/src/parser/classes/PlaylistPanel.ts
+++ b/src/parser/classes/PlaylistPanel.ts
@@ -1,17 +1,16 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import PlaylistPanelVideo from './PlaylistPanelVideo.js';
-
-import { YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import AutomixPreviewVideo from './AutomixPreviewVideo.js';
+import PlaylistPanelVideo from './PlaylistPanelVideo.js';
 import PlaylistPanelVideoWrapper from './PlaylistPanelVideoWrapper.js';
+import Text from './misc/Text.js';
 
-class PlaylistPanel extends YTNode {
+export default class PlaylistPanel extends YTNode {
   static type = 'PlaylistPanel';
 
   title: string;
   title_text: Text;
-  contents;
+  contents: ObservedArray<PlaylistPanelVideoWrapper | PlaylistPanelVideo | AutomixPreviewVideo>;
   playlist_id: string;
   is_infinite: boolean;
   continuation: string;
@@ -19,7 +18,7 @@ class PlaylistPanel extends YTNode {
   preview_description: string;
   num_items_to_show: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = data.title;
     this.title_text = new Text(data.titleText);
@@ -31,6 +30,4 @@ class PlaylistPanel extends YTNode {
     this.preview_description = data.previewDescription;
     this.num_items_to_show = data.numItemsToShow;
   }
-}
-
-export default PlaylistPanel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistPanelVideo.ts b/src/parser/classes/PlaylistPanelVideo.ts
index ab0999cc..b0d30bcc 100644
--- a/src/parser/classes/PlaylistPanelVideo.ts
+++ b/src/parser/classes/PlaylistPanelVideo.ts
@@ -1,13 +1,12 @@
-import Parser from '../index.js';
+import { timeToSeconds } from '../../utils/Utils.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import TextRun from './misc/TextRun.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import { timeToSeconds } from '../../utils/Utils.js';
 
-import { YTNode } from '../helpers.js';
-
-class PlaylistPanelVideo extends YTNode {
+export default class PlaylistPanelVideo extends YTNode {
   static type = 'PlaylistPanelVideo';
 
   title: Text;
@@ -24,23 +23,23 @@ class PlaylistPanelVideo extends YTNode {
   author: string;
 
   album?: {
-    id: string | undefined;
+    id?: string;
     name: string;
-    year: string | undefined;
-    endpoint: NavigationEndpoint | undefined;
+    year?: string;
+    endpoint?: NavigationEndpoint;
   };
 
   artists?: {
     name: string;
-    channel_id: string | undefined;
-    endpoint: NavigationEndpoint | undefined;
+    channel_id?: string;
+    endpoint?: NavigationEndpoint;
   }[];
 
-  badges;
-  menu;
-  set_video_id: string | undefined;
+  badges: ObservedArray<YTNode>;
+  menu: YTNode;
+  set_video_id?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
     this.title = new Text(data.title);
@@ -80,6 +79,4 @@ class PlaylistPanelVideo extends YTNode {
     this.menu = Parser.parseItem(data.menu);
     this.set_video_id = data.playlistSetVideoId;
   }
-}
-
-export default PlaylistPanelVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistPanelVideoWrapper.ts b/src/parser/classes/PlaylistPanelVideoWrapper.ts
index ff2b31cc..739da034 100644
--- a/src/parser/classes/PlaylistPanelVideoWrapper.ts
+++ b/src/parser/classes/PlaylistPanelVideoWrapper.ts
@@ -1,18 +1,19 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode, observe } from '../helpers.js';
 import PlaylistPanelVideo from './PlaylistPanelVideo.js';
 
-class PlaylistPanelVideoWrapper extends YTNode {
+export default class PlaylistPanelVideoWrapper extends YTNode {
   static type = 'PlaylistPanelVideoWrapper';
 
   primary: PlaylistPanelVideo | null;
-  counterpart: Array<PlaylistPanelVideo | null>;
+  counterpart?: ObservedArray<PlaylistPanelVideo>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.primary = Parser.parseItem(data.primaryRenderer, PlaylistPanelVideo);
-    this.counterpart = data.counterpart?.map((item: any) => Parser.parseItem(item.counterpartRenderer, PlaylistPanelVideo)) || [];
-  }
-}
 
-export default PlaylistPanelVideoWrapper;
\ No newline at end of file
+    if (Reflect.has(data, 'counterpart')) {
+      this.counterpart = observe(data.counterpart.map((item: RawNode) => Parser.parseItem(item.counterpartRenderer, PlaylistPanelVideo)) || []);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistSidebar.ts b/src/parser/classes/PlaylistSidebar.ts
index ae5f02ea..72054702 100644
--- a/src/parser/classes/PlaylistSidebar.ts
+++ b/src/parser/classes/PlaylistSidebar.ts
@@ -1,10 +1,10 @@
-import Parser, { RawNode } from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class PlaylistSidebar extends YTNode {
+export default class PlaylistSidebar extends YTNode {
   static type = 'PlaylistSidebar';
 
-  items;
+  items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
@@ -15,6 +15,4 @@ class PlaylistSidebar extends YTNode {
   get contents() {
     return this.items;
   }
-}
-
-export default PlaylistSidebar;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistSidebarPrimaryInfo.ts b/src/parser/classes/PlaylistSidebarPrimaryInfo.ts
index 4915a8d2..38653404 100644
--- a/src/parser/classes/PlaylistSidebarPrimaryInfo.ts
+++ b/src/parser/classes/PlaylistSidebarPrimaryInfo.ts
@@ -1,28 +1,25 @@
-import Parser, { RawNode } from '../index.js';
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class PlaylistSidebarPrimaryInfo extends YTNode {
+export default class PlaylistSidebarPrimaryInfo extends YTNode {
   static type = 'PlaylistSidebarPrimaryInfo';
 
   stats: Text[];
-  thumbnail_renderer;
+  thumbnail_renderer: YTNode;
   title: Text;
-  menu;
+  menu: YTNode;
   endpoint: NavigationEndpoint;
   description: Text;
 
   constructor(data: RawNode) {
     super();
-    this.stats = data.stats.map((stat: any) => new Text(stat));
+    this.stats = data.stats.map((stat: RawNode) => new Text(stat));
     this.thumbnail_renderer = Parser.parseItem(data.thumbnailRenderer);
     this.title = new Text(data.title);
     this.menu = Parser.parseItem(data.menu);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.description = new Text(data.description);
   }
-}
-
-export default PlaylistSidebarPrimaryInfo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistSidebarSecondaryInfo.ts b/src/parser/classes/PlaylistSidebarSecondaryInfo.ts
index 30b1cdd8..a0997a85 100644
--- a/src/parser/classes/PlaylistSidebarSecondaryInfo.ts
+++ b/src/parser/classes/PlaylistSidebarSecondaryInfo.ts
@@ -1,17 +1,15 @@
 import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 
-class PlaylistSidebarSecondaryInfo extends YTNode {
+export default class PlaylistSidebarSecondaryInfo extends YTNode {
   static type = 'PlaylistSidebarSecondaryInfo';
 
-  owner;
-  button;
+  owner: YTNode;
+  button: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.owner = Parser.parseItem(data.videoOwner);
     this.button = Parser.parseItem(data.button);
   }
-}
-
-export default PlaylistSidebarSecondaryInfo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistVideo.ts b/src/parser/classes/PlaylistVideo.ts
index f86f6886..7919f1b2 100644
--- a/src/parser/classes/PlaylistVideo.ts
+++ b/src/parser/classes/PlaylistVideo.ts
@@ -1,14 +1,13 @@
-import Text from './misc/Text.js';
-import Parser from '../index.js';
-import Thumbnail from './misc/Thumbnail.js';
-import Author from './misc/Author.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import ThumbnailOverlayTimeStatus from './ThumbnailOverlayTimeStatus.js';
 import Menu from './menus/Menu.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-import { YTNode } from '../helpers.js';
-
-class PlaylistVideo extends YTNode {
+export default class PlaylistVideo extends YTNode {
   static type = 'PlaylistVideo';
 
   id: string;
@@ -16,12 +15,12 @@ class PlaylistVideo extends YTNode {
   title: Text;
   author: Author;
   thumbnails: Thumbnail[];
-  thumbnail_overlays;
+  thumbnail_overlays: ObservedArray<YTNode>;
   set_video_id: string | undefined;
   endpoint: NavigationEndpoint;
   is_playable: boolean;
   menu: Menu | null;
-  upcoming;
+  upcoming?: Date;
   video_info: Text;
   accessibility_label?: string;
 
@@ -30,7 +29,7 @@ class PlaylistVideo extends YTNode {
     seconds: number;
   };
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.videoId;
     this.index = new Text(data.index);
@@ -63,6 +62,4 @@ class PlaylistVideo extends YTNode {
   get is_upcoming(): boolean {
     return this.thumbnail_overlays.firstOfType(ThumbnailOverlayTimeStatus)?.style === 'UPCOMING';
   }
-}
-
-export default PlaylistVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistVideoList.ts b/src/parser/classes/PlaylistVideoList.ts
index cf6c739f..d6790563 100644
--- a/src/parser/classes/PlaylistVideoList.ts
+++ b/src/parser/classes/PlaylistVideoList.ts
@@ -1,21 +1,19 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class PlaylistVideoList extends YTNode {
+export default class PlaylistVideoList extends YTNode {
   static type = 'PlaylistVideoList';
 
   id: string;
   is_editable: boolean;
   can_reorder: boolean;
-  videos;
+  videos: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.playlistId;
     this.is_editable = data.isEditable;
     this.can_reorder = data.canReorder;
-    this.videos = Parser.parse(data.contents);
+    this.videos = Parser.parseArray(data.contents);
   }
-}
-
-export default PlaylistVideoList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PlaylistVideoThumbnail.ts b/src/parser/classes/PlaylistVideoThumbnail.ts
index fca8b389..74648b50 100644
--- a/src/parser/classes/PlaylistVideoThumbnail.ts
+++ b/src/parser/classes/PlaylistVideoThumbnail.ts
@@ -1,15 +1,14 @@
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class PlaylistVideoThumbnail extends YTNode {
+export default class PlaylistVideoThumbnail extends YTNode {
   static type = 'PlaylistVideoThumbnail';
 
   thumbnail: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
   }
-}
-
-export default PlaylistVideoThumbnail;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Poll.ts b/src/parser/classes/Poll.ts
index f8417340..e3609aba 100644
--- a/src/parser/classes/Poll.ts
+++ b/src/parser/classes/Poll.ts
@@ -1,9 +1,10 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import { YTNode } from '../helpers.js';
 
-class Poll extends YTNode {
+export default class Poll extends YTNode {
   static type = 'Poll';
 
   choices: {
@@ -21,10 +22,10 @@ class Poll extends YTNode {
   total_votes?: Text;
   live_chat_poll_id?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
 
-    this.choices = data.choices.map((choice: any) => ({
+    this.choices = data.choices.map((choice: RawNode) => ({
       text: new Text(choice.text),
       select_endpoint: choice.selectServiceEndpoint ? new NavigationEndpoint(choice.selectServiceEndpoint) : null,
       deselect_endpoint: choice.deselectServiceEndpoint ? new NavigationEndpoint(choice.deselectServiceEndpoint) : null,
@@ -35,15 +36,13 @@ class Poll extends YTNode {
       image: choice.image ? Thumbnail.fromResponse(choice.image) : null
     }));
 
-    if (data.type)
+    if (Reflect.has(data, 'type'))
       this.poll_type = data.type;
 
-    if (data.totalVotes)
+    if (Reflect.has(data, 'totalVotes'))
       this.total_votes = new Text(data.totalVotes);
 
-    if (data.liveChatPollId)
+    if (Reflect.has(data, 'liveChatPollId'))
       this.live_chat_poll_id = data.liveChatPollId;
   }
-}
-
-export default Poll;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Post.ts b/src/parser/classes/Post.ts
index acf9dc19..d2b4c66b 100644
--- a/src/parser/classes/Post.ts
+++ b/src/parser/classes/Post.ts
@@ -1,11 +1,10 @@
+import type { RawNode } from '../index.js';
 import BackstagePost from './BackstagePost.js';
 
-class Post extends BackstagePost {
+export default class Post extends BackstagePost {
   static type = 'Post';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default Post;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/PostMultiImage.ts b/src/parser/classes/PostMultiImage.ts
index 12605bb7..6c1d29e4 100644
--- a/src/parser/classes/PostMultiImage.ts
+++ b/src/parser/classes/PostMultiImage.ts
@@ -1,17 +1,14 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import BackstageImage from './BackstageImage.js';
-
 import { YTNode } from '../helpers.js';
 
-class PostMultiImage extends YTNode {
+export default class PostMultiImage extends YTNode {
   static type = 'PostMultiImage';
 
   images : BackstageImage[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.images = Parser.parseArray(data.images, BackstageImage);
   }
-}
-
-export default PostMultiImage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ProfileColumn.ts b/src/parser/classes/ProfileColumn.ts
index 54e7dea8..b76b9428 100644
--- a/src/parser/classes/ProfileColumn.ts
+++ b/src/parser/classes/ProfileColumn.ts
@@ -1,20 +1,18 @@
-import Parser, { RawNode } from '../index.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class ProfileColumn extends YTNode {
+export default class ProfileColumn extends YTNode {
   static type = 'ProfileColumn';
 
-  items;
+  items: ObservedArray<YTNode>;
 
   constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default ProfileColumn;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ProfileColumnStats.ts b/src/parser/classes/ProfileColumnStats.ts
index 79a2cb8b..fb45fb87 100644
--- a/src/parser/classes/ProfileColumnStats.ts
+++ b/src/parser/classes/ProfileColumnStats.ts
@@ -1,20 +1,18 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class ProfileColumnStats extends YTNode {
+export default class ProfileColumnStats extends YTNode {
   static type = 'ProfileColumnStats';
 
-  items;
+  items: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default ProfileColumnStats;
+}
\ No newline at end of file
diff --git a/src/parser/classes/ProfileColumnStatsEntry.ts b/src/parser/classes/ProfileColumnStatsEntry.ts
index 2827bdab..4cd6ce1b 100644
--- a/src/parser/classes/ProfileColumnStatsEntry.ts
+++ b/src/parser/classes/ProfileColumnStatsEntry.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ProfileColumnStatsEntry extends YTNode {
+export default class ProfileColumnStatsEntry extends YTNode {
   static type = 'ProfileColumnStatsEntry';
 
   label: Text;
   value: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.label = new Text(data.label);
     this.value = new Text(data.value);
   }
-}
-
-export default ProfileColumnStatsEntry;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ProfileColumnUserInfo.ts b/src/parser/classes/ProfileColumnUserInfo.ts
index ec118064..0b86d33e 100644
--- a/src/parser/classes/ProfileColumnUserInfo.ts
+++ b/src/parser/classes/ProfileColumnUserInfo.ts
@@ -1,18 +1,17 @@
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ProfileColumnUserInfo extends YTNode {
+export default class ProfileColumnUserInfo extends YTNode {
   static type = 'ProfileColumnUserInfo';
 
   title: Text;
   thumbnails: Thumbnail[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
   }
-}
-
-export default ProfileColumnUserInfo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RecognitionShelf.ts b/src/parser/classes/RecognitionShelf.ts
index 5c27938d..f70fda66 100644
--- a/src/parser/classes/RecognitionShelf.ts
+++ b/src/parser/classes/RecognitionShelf.ts
@@ -1,11 +1,10 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
-
 import Button from './Button.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-class RecognitionShelf extends YTNode {
+export default class RecognitionShelf extends YTNode {
   static type = 'RecognitionShelf';
 
   title: Text;
@@ -14,15 +13,12 @@ class RecognitionShelf extends YTNode {
   button: Button | null;
   surface: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.title = new Text(data.title);
     this.subtitle = new Text(data.subtitle);
-    this.avatars = data.avatars.map((avatar: any) => new Thumbnail(avatar));
-    this.button = Parser.parseItem<Button>(data.button, Button);
+    this.avatars = data.avatars.map((avatar: RawNode) => new Thumbnail(avatar));
+    this.button = Parser.parseItem(data.button, Button);
     this.surface = data.surface;
   }
-}
-
-export default RecognitionShelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ReelItem.ts b/src/parser/classes/ReelItem.ts
index cf1c39b1..08ca23b1 100644
--- a/src/parser/classes/ReelItem.ts
+++ b/src/parser/classes/ReelItem.ts
@@ -1,9 +1,10 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import { YTNode } from '../helpers.js';
 
-class ReelItem extends YTNode {
+export default class ReelItem extends YTNode {
   static type = 'ReelItem';
 
   id: string;
@@ -12,7 +13,7 @@ class ReelItem extends YTNode {
   views: Text;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.id = data.videoId;
     this.title = new Text(data.headline);
@@ -20,6 +21,4 @@ class ReelItem extends YTNode {
     this.views = new Text(data.viewCountText);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default ReelItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ReelShelf.ts b/src/parser/classes/ReelShelf.ts
index aa56ea7e..7567c9e4 100644
--- a/src/parser/classes/ReelShelf.ts
+++ b/src/parser/classes/ReelShelf.ts
@@ -1,26 +1,27 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
 
-class ReelShelf extends YTNode {
+export default class ReelShelf extends YTNode {
   static type = 'ReelShelf';
 
   title: Text;
-  items;
-  endpoint: NavigationEndpoint | null;
+  items: ObservedArray<YTNode>;
+  endpoint?: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.items = Parser.parseArray(data.items);
-    this.endpoint = data.endpoint ? new NavigationEndpoint(data.endpoint) : null;
+
+    if (Reflect.has(data, 'endpoint')) {
+      this.endpoint = new NavigationEndpoint(data.endpoint);
+    }
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default ReelShelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RelatedChipCloud.ts b/src/parser/classes/RelatedChipCloud.ts
index bc987b27..af158983 100644
--- a/src/parser/classes/RelatedChipCloud.ts
+++ b/src/parser/classes/RelatedChipCloud.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class RelatedChipCloud extends YTNode {
+export default class RelatedChipCloud extends YTNode {
   static type = 'RelatedChipCloud';
 
-  content;
+  content: YTNode;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.content = Parser.parse(data.content);
+    this.content = Parser.parseItem(data.content);
   }
-}
-
-export default RelatedChipCloud;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichGrid.ts b/src/parser/classes/RichGrid.ts
index a7c3bdc5..82637f53 100644
--- a/src/parser/classes/RichGrid.ts
+++ b/src/parser/classes/RichGrid.ts
@@ -1,20 +1,17 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-import { YTNode } from '../helpers.js';
-
-class RichGrid extends YTNode {
+export default class RichGrid extends YTNode {
   static type = 'RichGrid';
 
-  header;
-  contents;
+  header: YTNode;
+  contents: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    // XXX: we don't parse the masthead since it is usually an advertisement
-    // XXX: reflowOptions aren't parsed, I think its only used internally for layout
+    // (Daniel Wykerd) XXX: we don't parse the masthead since it is usually an advertisement
+    // (Daniel Wykerd) XXX: reflowOptions aren't parsed, I think its only used internally for layout
     this.header = Parser.parseItem(data.header);
     this.contents = Parser.parseArray(data.contents);
   }
-}
-
-export default RichGrid;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichItem.ts b/src/parser/classes/RichItem.ts
index c7b3d98a..8bbad98e 100644
--- a/src/parser/classes/RichItem.ts
+++ b/src/parser/classes/RichItem.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import { YTNode } from '../helpers.js';
 
-class RichItem extends YTNode {
+export default class RichItem extends YTNode {
   static type = 'RichItem';
 
-  content;
+  content: YTNode;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.content = Parser.parseItem(data.content);
   }
-}
-
-export default RichItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichListHeader.ts b/src/parser/classes/RichListHeader.ts
index dba218be..ed044a47 100644
--- a/src/parser/classes/RichListHeader.ts
+++ b/src/parser/classes/RichListHeader.ts
@@ -1,21 +1,26 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class RichListHeader extends YTNode {
+export default class RichListHeader extends YTNode {
   static type = 'RichListHeader';
 
   title: Text;
   subtitle: Text;
-  title_style: string | undefined;
-  icon_type: string;
+  title_style?: string;
+  icon_type?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.subtitle = new Text(data.subtitle);
-    this.title_style = data?.titleStyle?.style;
-    this.icon_type = data?.icon?.iconType;
-  }
-}
 
-export default RichListHeader;
\ No newline at end of file
+    if (Reflect.has(data, 'titleStyle')) {
+      this.title_style = data.titleStyle.style;
+    }
+
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon.iconType;
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichMetadata.ts b/src/parser/classes/RichMetadata.ts
index 76dc7b1e..8280ec85 100644
--- a/src/parser/classes/RichMetadata.ts
+++ b/src/parser/classes/RichMetadata.ts
@@ -2,31 +2,29 @@ import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class RichMetadata extends YTNode {
+export default class RichMetadata extends YTNode {
   static type = 'RichMetadata';
 
   thumbnail: Thumbnail[];
   title: Text;
-  subtitle?: Text;
+  subtitle: Text;
   call_to_action: Text;
   icon_type?: string;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
     this.title = new Text(data.title);
     this.subtitle = new Text(data.subtitle);
     this.call_to_action = new Text(data.callToAction);
 
-    if (data.callToActionIcon?.iconType) {
-      this.icon_type = data.callToActionIcon?.iconType;
+    if (Reflect.has(data, 'callToActionIcon')) {
+      this.icon_type = data.callToActionIcon.iconType;
     }
 
     this.endpoint = new NavigationEndpoint(data.endpoint);
   }
-}
-
-export default RichMetadata;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichMetadataRow.ts b/src/parser/classes/RichMetadataRow.ts
index 189b8f4c..2f0ca4c8 100644
--- a/src/parser/classes/RichMetadataRow.ts
+++ b/src/parser/classes/RichMetadataRow.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class RichMetadataRow extends YTNode {
+export default class RichMetadataRow extends YTNode {
   static type = 'RichMetadataRow';
 
-  contents;
+  contents: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.contents = Parser.parseArray(data.contents);
   }
-}
-
-export default RichMetadataRow;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichSection.ts b/src/parser/classes/RichSection.ts
index ad69a479..f1b57e76 100644
--- a/src/parser/classes/RichSection.ts
+++ b/src/parser/classes/RichSection.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class RichSection extends YTNode {
+export default class RichSection extends YTNode {
   static type = 'RichSection';
 
-  content;
+  content: YTNode;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.content = Parser.parseItem(data.content);
   }
-}
-
-export default RichSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/RichShelf.ts b/src/parser/classes/RichShelf.ts
index d060a52f..e48a7a4b 100644
--- a/src/parser/classes/RichShelf.ts
+++ b/src/parser/classes/RichShelf.ts
@@ -1,21 +1,22 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
 
-class RichShelf extends YTNode {
+export default class RichShelf extends YTNode {
   static type = 'RichShelf';
 
   title: Text;
-  contents;
-  endpoint: NavigationEndpoint | null;
+  contents: ObservedArray<YTNode>;
+  endpoint?: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.contents = Parser.parseArray(data.contents);
-    this.endpoint = data.endpoint ? new NavigationEndpoint(data.endpoint) : null;
-  }
-}
 
-export default RichShelf;
\ No newline at end of file
+    if (Reflect.has(data, 'endpoint')) {
+      this.endpoint = new NavigationEndpoint(data.endpoint);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchBox.ts b/src/parser/classes/SearchBox.ts
index 4770b865..b24a0c8e 100644
--- a/src/parser/classes/SearchBox.ts
+++ b/src/parser/classes/SearchBox.ts
@@ -1,23 +1,22 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Button from './Button.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class SearchBox extends YTNode {
+export default class SearchBox extends YTNode {
   static type = 'SearchBox';
 
   endpoint: NavigationEndpoint;
-  search_button;
-  clear_button;
+  search_button: Button | null;
+  clear_button: Button | null;
   placeholder_text: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.endpoint = new NavigationEndpoint(data.endpoint);
-    this.search_button = Parser.parseItem(data.searchButton);
-    this.clear_button = Parser.parseItem(data.clearButton);
+    this.search_button = Parser.parseItem(data.searchButton, Button);
+    this.clear_button = Parser.parseItem(data.clearButton, Button);
     this.placeholder_text = new Text(data.placeholderText);
   }
-}
-
-export default SearchBox;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchFilter.ts b/src/parser/classes/SearchFilter.ts
index c95def06..1fad3f53 100644
--- a/src/parser/classes/SearchFilter.ts
+++ b/src/parser/classes/SearchFilter.ts
@@ -3,7 +3,7 @@ import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class SearchFilter extends YTNode {
+export default class SearchFilter extends YTNode {
   static type = 'SearchFilter';
 
   label: Text;
@@ -13,12 +13,11 @@ class SearchFilter extends YTNode {
 
   constructor(data: RawNode) {
     super();
-
     this.label = new Text(data.label);
     this.endpoint = new NavigationEndpoint(data.endpoint || data.navigationEndpoint);
     this.tooltip = data.tooltip;
 
-    if (data.status) {
+    if (Reflect.has(data, 'status')) {
       this.status = data.status;
     }
   }
@@ -30,6 +29,4 @@ class SearchFilter extends YTNode {
   get selected(): boolean {
     return this.status === 'FILTER_STATUS_SELECTED';
   }
-}
-
-export default SearchFilter;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchFilterGroup.ts b/src/parser/classes/SearchFilterGroup.ts
index 5e7c6aa1..a92c907b 100644
--- a/src/parser/classes/SearchFilterGroup.ts
+++ b/src/parser/classes/SearchFilterGroup.ts
@@ -1,21 +1,18 @@
-import { ObservedArray, YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
 import type { RawNode } from '../index.js';
 import { Parser } from '../index.js';
 import Text from './misc/Text.js';
 import SearchFilter from './SearchFilter.js';
 
-class SearchFilterGroup extends YTNode {
+export default class SearchFilterGroup extends YTNode {
   static type = 'SearchFilterGroup';
 
   title: Text;
-  filters: ObservedArray<SearchFilter> | null;
+  filters: ObservedArray<SearchFilter>;
 
   constructor(data: RawNode) {
     super();
-
     this.title = new Text(data.title);
     this.filters = Parser.parseArray(data.filters, SearchFilter);
   }
-}
-
-export default SearchFilterGroup;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchRefinementCard.ts b/src/parser/classes/SearchRefinementCard.ts
index 3a749bc8..fe364453 100644
--- a/src/parser/classes/SearchRefinementCard.ts
+++ b/src/parser/classes/SearchRefinementCard.ts
@@ -2,20 +2,19 @@ import NavigationEndpoint from './NavigationEndpoint.js';
 import Thumbnail from './misc/Thumbnail.js';
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class SearchRefinementCard extends YTNode {
+export default class SearchRefinementCard extends YTNode {
   static type = 'SearchRefinementCard';
 
   thumbnails: Thumbnail[];
   endpoint: NavigationEndpoint;
   query: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.endpoint = new NavigationEndpoint(data.searchEndpoint);
     this.query = new Text(data.query).toString();
   }
-}
-
-export default SearchRefinementCard;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchSubMenu.ts b/src/parser/classes/SearchSubMenu.ts
index 48ae81fd..67b2882c 100644
--- a/src/parser/classes/SearchSubMenu.ts
+++ b/src/parser/classes/SearchSubMenu.ts
@@ -1,15 +1,15 @@
-import { ObservedArray, YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
 import Parser from '../index.js';
 import Text from './misc/Text.js';
 import SearchFilterGroup from './SearchFilterGroup.js';
 import ToggleButton from './ToggleButton.js';
 
-class SearchSubMenu extends YTNode {
+export default class SearchSubMenu extends YTNode {
   static type = 'SearchSubMenu';
 
   title: Text;
-  groups: ObservedArray<SearchFilterGroup> | null;
+  groups: ObservedArray<SearchFilterGroup>;
   button: ToggleButton | null;
 
   constructor(data: RawNode) {
@@ -18,6 +18,4 @@ class SearchSubMenu extends YTNode {
     this.groups = Parser.parseArray(data.groups, SearchFilterGroup);
     this.button = Parser.parseItem(data.button, ToggleButton);
   }
-}
-
-export default SearchSubMenu;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchSuggestion.ts b/src/parser/classes/SearchSuggestion.ts
index dde78b75..bf1a995f 100644
--- a/src/parser/classes/SearchSuggestion.ts
+++ b/src/parser/classes/SearchSuggestion.ts
@@ -1,25 +1,27 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class SearchSuggestion extends YTNode {
+export default class SearchSuggestion extends YTNode {
   static type = 'SearchSuggestion';
 
   suggestion: Text;
   endpoint: NavigationEndpoint;
-  icon_type: string;
-  service_endpoint;
+  icon_type?: string;
+  service_endpoint?: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.suggestion = new Text(data.suggestion);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
-    this.icon_type = data.icon.iconType;
 
-    if (data.serviceEndpoint) {
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon.iconType;
+    }
+
+    if (Reflect.has(data, 'serviceEndpoint')) {
       this.service_endpoint = new NavigationEndpoint(data.serviceEndpoint);
     }
   }
-}
-
-export default SearchSuggestion;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SearchSuggestionsSection.ts b/src/parser/classes/SearchSuggestionsSection.ts
index 7969771f..1b7bb245 100644
--- a/src/parser/classes/SearchSuggestionsSection.ts
+++ b/src/parser/classes/SearchSuggestionsSection.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class SearchSuggestionsSection extends YTNode {
+export default class SearchSuggestionsSection extends YTNode {
   static type = 'SearchSuggestionsSection';
 
-  contents;
+  contents: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.contents = Parser.parse(data.contents);
+    this.contents = Parser.parseArray(data.contents);
   }
-}
-
-export default SearchSuggestionsSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SecondarySearchContainer.ts b/src/parser/classes/SecondarySearchContainer.ts
index aa0af991..b6f3eab5 100644
--- a/src/parser/classes/SecondarySearchContainer.ts
+++ b/src/parser/classes/SecondarySearchContainer.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 
-class SecondarySearchContainer extends YTNode {
+export default class SecondarySearchContainer extends YTNode {
   static type = 'SecondarySearchContainer';
 
-  contents;
+  contents: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.contents = Parser.parse(data.contents);
+    this.contents = Parser.parseArray(data.contents);
   }
-}
-
-export default SecondarySearchContainer;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SectionList.ts b/src/parser/classes/SectionList.ts
index f0da66fd..10f318fe 100644
--- a/src/parser/classes/SectionList.ts
+++ b/src/parser/classes/SectionList.ts
@@ -1,39 +1,37 @@
-import { YTNode } from '../helpers.js';
-import Parser, { RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class SectionList extends YTNode {
+export default class SectionList extends YTNode {
   static type = 'SectionList';
 
+  contents: ObservedArray<YTNode>;
   target_id?: string;
-  contents;
   continuation?: string;
-  header?;
-  sub_menu?;
+  header?: YTNode;
+  sub_menu?: YTNode;
 
   constructor(data: RawNode) {
     super();
-    if (data.targetId) {
+    this.contents = Parser.parseArray(data.contents);
+
+    if (Reflect.has(data, 'targetId')) {
       this.target_id = data.targetId;
     }
 
-    this.contents = Parser.parseArray(data.contents);
-
-    if (data.continuations) {
-      if (data.continuations[0].nextContinuationData) {
+    if (Reflect.has(data, 'continuations')) {
+      if (Reflect.has(data.continuations[0], 'nextContinuationData')) {
         this.continuation = data.continuations[0].nextContinuationData.continuation;
-      } else if (data.continuations[0].reloadContinuationData) {
+      } else if (Reflect.has(data.continuations[0], 'reloadContinuationData')) {
         this.continuation = data.continuations[0].reloadContinuationData.continuation;
       }
     }
 
-    if (data.header) {
+    if (Reflect.has(data, 'header')) {
       this.header = Parser.parseItem(data.header);
     }
 
-    if (data.subMenu) {
+    if (Reflect.has(data, 'subMenu')) {
       this.sub_menu = Parser.parseItem(data.subMenu);
     }
   }
-}
-
-export default SectionList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SegmentedLikeDislikeButton.ts b/src/parser/classes/SegmentedLikeDislikeButton.ts
index 5a802629..3c4bbf1b 100644
--- a/src/parser/classes/SegmentedLikeDislikeButton.ts
+++ b/src/parser/classes/SegmentedLikeDislikeButton.ts
@@ -4,7 +4,7 @@ import Parser from '../index.js';
 import Button from './Button.js';
 import ToggleButton from './ToggleButton.js';
 
-class SegmentedLikeDislikeButton extends YTNode {
+export default class SegmentedLikeDislikeButton extends YTNode {
   static type = 'SegmentedLikeDislikeButton';
 
   like_button: ToggleButton | Button | null;
@@ -15,6 +15,4 @@ class SegmentedLikeDislikeButton extends YTNode {
     this.like_button = Parser.parseItem(data.likeButton, [ ToggleButton, Button ]);
     this.dislike_button = Parser.parseItem(data.dislikeButton, [ ToggleButton, Button ]);
   }
-}
-
-export default SegmentedLikeDislikeButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SettingBoolean.ts b/src/parser/classes/SettingBoolean.ts
index 193d8893..6d2b7dc3 100644
--- a/src/parser/classes/SettingBoolean.ts
+++ b/src/parser/classes/SettingBoolean.ts
@@ -1,9 +1,9 @@
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class SettingBoolean extends YTNode {
+export default class SettingBoolean extends YTNode {
   static type = 'SettingBoolean';
 
   title?: Text;
@@ -12,27 +12,24 @@ class SettingBoolean extends YTNode {
   disable_endpoint?: NavigationEndpoint;
   item_id: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
-    if (data.title) {
+    if (Reflect.has(data, 'title')) {
       this.title = new Text(data.title);
     }
 
-    if (data.summary) {
+    if (Reflect.has(data, 'summary')) {
       this.summary = new Text(data.summary);
     }
 
-    if (data.enableServiceEndpoint) {
+    if (Reflect.has(data, 'enableServiceEndpoint')) {
       this.enable_endpoint = new NavigationEndpoint(data.enableServiceEndpoint);
     }
 
-    if (data.disableServiceEndpoint) {
+    if (Reflect.has(data, 'disableServiceEndpoint')) {
       this.disable_endpoint = new NavigationEndpoint(data.disableServiceEndpoint);
     }
 
     this.item_id = data.itemId;
   }
-}
-
-export default SettingBoolean;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SettingsCheckbox.ts b/src/parser/classes/SettingsCheckbox.ts
index 1d59e318..0143e765 100644
--- a/src/parser/classes/SettingsCheckbox.ts
+++ b/src/parser/classes/SettingsCheckbox.ts
@@ -1,7 +1,8 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class SettingsCheckbox extends YTNode {
+export default class SettingsCheckbox extends YTNode {
   static type = 'SettingsCheckbox';
 
   title: Text;
@@ -10,7 +11,7 @@ class SettingsCheckbox extends YTNode {
   disabled: boolean;
   id: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.help_text = new Text(data.helpText);
@@ -18,6 +19,4 @@ class SettingsCheckbox extends YTNode {
     this.disabled = data.disabled;
     this.id = data.id;
   }
-}
-
-export default SettingsCheckbox;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SettingsOptions.ts b/src/parser/classes/SettingsOptions.ts
index bf894078..48c1f1a5 100644
--- a/src/parser/classes/SettingsOptions.ts
+++ b/src/parser/classes/SettingsOptions.ts
@@ -1,22 +1,20 @@
-import Parser from '../index.js';
-
-import Text from './misc/Text.js';
-import Dropdown from './Dropdown.js';
-import SettingsSwitch from './SettingsSwitch.js';
-import SettingsCheckbox from './SettingsCheckbox.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import ChannelOptions from './ChannelOptions.js';
 import CopyLink from './CopyLink.js';
+import Dropdown from './Dropdown.js';
+import SettingsCheckbox from './SettingsCheckbox.js';
+import SettingsSwitch from './SettingsSwitch.js';
+import Text from './misc/Text.js';
 
-import { YTNode } from '../helpers.js';
-
-class SettingsOptions extends YTNode {
+export default class SettingsOptions extends YTNode {
   static type = 'SettingsOptions';
 
   title: Text;
   text?: string;
-  options?;
+  options?: ObservedArray<SettingsSwitch | Dropdown | CopyLink | SettingsCheckbox | ChannelOptions>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
 
@@ -31,6 +29,4 @@ class SettingsOptions extends YTNode {
       ]);
     }
   }
-}
-
-export default SettingsOptions;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SettingsSidebar.ts b/src/parser/classes/SettingsSidebar.ts
index 8289d003..608bdef7 100644
--- a/src/parser/classes/SettingsSidebar.ts
+++ b/src/parser/classes/SettingsSidebar.ts
@@ -1,23 +1,22 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import CompactLink from './CompactLink.js';
-import { ObservedArray, YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
 
-class SettingsSidebar extends YTNode {
+export default class SettingsSidebar extends YTNode {
   static type = 'SettingsSidebar';
 
   title: Text;
   items: ObservedArray<CompactLink>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
-    this.items = Parser.parseArray<CompactLink>(data.items, CompactLink);
+    this.items = Parser.parseArray(data.items, CompactLink);
   }
 
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default SettingsSidebar;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SettingsSwitch.ts b/src/parser/classes/SettingsSwitch.ts
index 1c398bc4..22ec2385 100644
--- a/src/parser/classes/SettingsSwitch.ts
+++ b/src/parser/classes/SettingsSwitch.ts
@@ -1,8 +1,9 @@
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class SettingsSwitch extends YTNode {
+export default class SettingsSwitch extends YTNode {
   static type = 'SettingsSwitch';
 
   title: Text;
@@ -11,7 +12,7 @@ class SettingsSwitch extends YTNode {
   enable_endpoint: NavigationEndpoint;
   disable_endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.subtitle = new Text(data.subtitle);
@@ -19,6 +20,4 @@ class SettingsSwitch extends YTNode {
     this.enable_endpoint = new NavigationEndpoint(data.enableServiceEndpoint);
     this.disable_endpoint = new NavigationEndpoint(data.disableServiceEndpoint);
   }
-}
-
-export default SettingsSwitch;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SharedPost.ts b/src/parser/classes/SharedPost.ts
index d661eade..cb957fcb 100644
--- a/src/parser/classes/SharedPost.ts
+++ b/src/parser/classes/SharedPost.ts
@@ -1,4 +1,5 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Parser from '../parser.js';
 import BackstagePost from './BackstagePost.js';
 import Button from './Button.js';
@@ -8,7 +9,7 @@ import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class SharedPost extends YTNode {
+export default class SharedPost extends YTNode {
   static type = 'SharedPost';
 
   thumbnail: Thumbnail[];
@@ -21,7 +22,7 @@ class SharedPost extends YTNode {
   expand_button: Button | null;
   author: Author;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
     this.content = new Text(data.content);
@@ -33,6 +34,4 @@ class SharedPost extends YTNode {
     this.expand_button = Parser.parseItem(data.expandButton, Button);
     this.author = new Author(data.displayName, undefined);
   }
-}
-
-export default SharedPost;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Shelf.ts b/src/parser/classes/Shelf.ts
index 1c3206ab..383837b1 100644
--- a/src/parser/classes/Shelf.ts
+++ b/src/parser/classes/Shelf.ts
@@ -1,10 +1,10 @@
 import Text from './misc/Text.js';
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
 import Button from './Button.js';
 
-class Shelf extends YTNode {
+export default class Shelf extends YTNode {
   static type = 'Shelf';
 
   title: Text;
@@ -14,28 +14,26 @@ class Shelf extends YTNode {
   menu?: YTNode | null;
   play_all_button?: Button | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
 
-    if (data.endpoint) {
+    if (Reflect.has(data, 'endpoint')) {
       this.endpoint = new NavigationEndpoint(data.endpoint);
     }
 
-    this.content = Parser.parseItem(data.content) || null;
+    this.content = Parser.parseItem(data.content);
 
-    if (data.icon?.iconType) {
-      this.icon_type = data.icon?.iconType;
+    if (Reflect.has(data, 'icon')) {
+      this.icon_type = data.icon.iconType;
     }
 
-    if (data.menu) {
+    if (Reflect.has(data, 'menu')) {
       this.menu = Parser.parseItem(data.menu);
     }
 
-    if (data.playAllButton) {
+    if (Reflect.has(data, 'playAllButton')) {
       this.play_all_button = Parser.parseItem(data.playAllButton, Button);
     }
   }
-}
-
-export default Shelf;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ShowCustomThumbnail.ts b/src/parser/classes/ShowCustomThumbnail.ts
index 0ed946a7..537d8555 100644
--- a/src/parser/classes/ShowCustomThumbnail.ts
+++ b/src/parser/classes/ShowCustomThumbnail.ts
@@ -1,5 +1,5 @@
 import { YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import type { RawNode } from '../index.js';
 import Thumbnail from './misc/Thumbnail.js';
 
 export default class ShowCustomThumbnail extends YTNode {
diff --git a/src/parser/classes/SimpleCardContent.ts b/src/parser/classes/SimpleCardContent.ts
index 02624cc0..a1be4716 100644
--- a/src/parser/classes/SimpleCardContent.ts
+++ b/src/parser/classes/SimpleCardContent.ts
@@ -1,10 +1,10 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 
-import { YTNode } from '../helpers.js';
-
-class SimpleCardContent extends YTNode {
+export default class SimpleCardContent extends YTNode {
   static type = 'SimpleCardContent';
 
   image: Thumbnail[];
@@ -14,16 +14,13 @@ class SimpleCardContent extends YTNode {
   call_to_action: Text;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.image = Thumbnail.fromResponse(data.image);
     this.title = new Text(data.title);
     this.display_domain = new Text(data.displayDomain);
     this.show_link_icon = data.showLinkIcon;
-    this.call_to_action = data.callToAction;
+    this.call_to_action = new Text(data.callToAction);
     this.endpoint = new NavigationEndpoint(data.command);
   }
-}
-
-export default SimpleCardContent;
+}
\ No newline at end of file
diff --git a/src/parser/classes/SimpleCardTeaser.ts b/src/parser/classes/SimpleCardTeaser.ts
index 3362770f..98307fd0 100644
--- a/src/parser/classes/SimpleCardTeaser.ts
+++ b/src/parser/classes/SimpleCardTeaser.ts
@@ -1,17 +1,16 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class SimpleCardTeaser extends YTNode {
+export default class SimpleCardTeaser extends YTNode {
   static type = 'SimpleCardTeaser';
 
   message: Text;
-  prominent: boolean; // TODO: or string?
+  prominent: boolean; // @TODO: or string?
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.message = new Text(data.message);
     this.prominent = data.prominent;
   }
-}
-
-export default SimpleCardTeaser;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SimpleTextSection.ts b/src/parser/classes/SimpleTextSection.ts
index a5fa0e43..7e7c111c 100644
--- a/src/parser/classes/SimpleTextSection.ts
+++ b/src/parser/classes/SimpleTextSection.ts
@@ -1,18 +1,16 @@
 import Text from './misc/Text.js';
-
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class SimpleTextSection extends YTNode {
+export default class SimpleTextSection extends YTNode {
   static type = 'SimpleTextSection';
 
   lines: Text[];
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.lines = data.lines.map((line: any) => new Text(line));
+    this.lines = data.lines.map((line: RawNode) => new Text(line));
     this.style = data.layoutStyle;
   }
-}
-
-export default SimpleTextSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SingleActionEmergencySupport.ts b/src/parser/classes/SingleActionEmergencySupport.ts
index ff6e2eb2..7221445b 100644
--- a/src/parser/classes/SingleActionEmergencySupport.ts
+++ b/src/parser/classes/SingleActionEmergencySupport.ts
@@ -1,8 +1,9 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class SingleActionEmergencySupport extends YTNode {
+export default class SingleActionEmergencySupport extends YTNode {
   static type = 'SingleActionEmergencySupport';
 
   action_text: Text;
@@ -11,7 +12,7 @@ class SingleActionEmergencySupport extends YTNode {
   icon_type: string;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.action_text = new Text(data.actionText);
     this.nav_text = new Text(data.navigationText);
@@ -19,6 +20,4 @@ class SingleActionEmergencySupport extends YTNode {
     this.icon_type = data.icon.iconType;
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default SingleActionEmergencySupport;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SingleColumnBrowseResults.ts b/src/parser/classes/SingleColumnBrowseResults.ts
index bbbb7434..68bb0cd6 100644
--- a/src/parser/classes/SingleColumnBrowseResults.ts
+++ b/src/parser/classes/SingleColumnBrowseResults.ts
@@ -1,17 +1,14 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Tab from './Tab.js';
 
-import { YTNode } from '../helpers.js';
-
-class SingleColumnBrowseResults extends YTNode {
+export default class SingleColumnBrowseResults extends YTNode {
   static type = 'SingleColumnBrowseResults';
 
-  tabs;
+  tabs: ObservedArray<Tab>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.tabs = Parser.parseArray<Tab>(data.tabs, Tab);
+    this.tabs = Parser.parseArray(data.tabs, Tab);
   }
-}
-
-export default SingleColumnBrowseResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SingleColumnMusicWatchNextResults.ts b/src/parser/classes/SingleColumnMusicWatchNextResults.ts
index 351c7b08..78ed5096 100644
--- a/src/parser/classes/SingleColumnMusicWatchNextResults.ts
+++ b/src/parser/classes/SingleColumnMusicWatchNextResults.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class SingleColumnMusicWatchNextResults extends YTNode {
+export default class SingleColumnMusicWatchNextResults extends YTNode {
   static type = 'SingleColumnMusicWatchNextResults';
 
   contents;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.contents = Parser.parse(data);
   }
-}
-
-export default SingleColumnMusicWatchNextResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SingleHeroImage.ts b/src/parser/classes/SingleHeroImage.ts
index 89105606..9c729019 100644
--- a/src/parser/classes/SingleHeroImage.ts
+++ b/src/parser/classes/SingleHeroImage.ts
@@ -1,17 +1,16 @@
 import Thumbnail from './misc/Thumbnail.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class SingleHeroImage extends YTNode {
+export default class SingleHeroImage extends YTNode {
   static type = 'SingleHeroImage';
 
   thumbnails: Thumbnail[];
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.style = data.style;
   }
-}
-
-export default SingleHeroImage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SlimOwner.ts b/src/parser/classes/SlimOwner.ts
index 4db9be37..51ba2a57 100644
--- a/src/parser/classes/SlimOwner.ts
+++ b/src/parser/classes/SlimOwner.ts
@@ -1,11 +1,11 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import Thumbnail from './misc/Thumbnail.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import SubscribeButton from './SubscribeButton.js';
-import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class SlimOwner extends YTNode {
+export default class SlimOwner extends YTNode {
   static type = 'SlimOwner';
 
   thumbnail: Thumbnail[];
@@ -13,13 +13,11 @@ class SlimOwner extends YTNode {
   endpoint: NavigationEndpoint;
   subscribe_button: SubscribeButton | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
     this.title = new Text(data.title);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
-    this.subscribe_button = Parser.parseItem<SubscribeButton>(data.subscribeButton, SubscribeButton);
+    this.subscribe_button = Parser.parseItem(data.subscribeButton, SubscribeButton);
   }
-}
-
-export default SlimOwner;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SlimVideoMetadata.ts b/src/parser/classes/SlimVideoMetadata.ts
index 24df3776..3d1b9840 100644
--- a/src/parser/classes/SlimVideoMetadata.ts
+++ b/src/parser/classes/SlimVideoMetadata.ts
@@ -1,19 +1,19 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class SlimVideoMetadata extends YTNode {
+export default class SlimVideoMetadata extends YTNode {
   static type = 'SlimVideoMetadata';
 
   title: Text;
   collapsed_subtitle: Text;
   expanded_subtitle: Text;
-  owner: any;
+  owner: YTNode;
   description: Text;
   video_id: string;
   date: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.collapsed_subtitle = new Text(data.collapsedSubtitle);
@@ -23,6 +23,4 @@ class SlimVideoMetadata extends YTNode {
     this.video_id = data.videoId;
     this.date = new Text(data.dateText);
   }
-}
-
-export default SlimVideoMetadata;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SortFilterSubMenu.ts b/src/parser/classes/SortFilterSubMenu.ts
index b78c8c5a..06a70c59 100644
--- a/src/parser/classes/SortFilterSubMenu.ts
+++ b/src/parser/classes/SortFilterSubMenu.ts
@@ -1,7 +1,8 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 
-class SortFilterSubMenu extends YTNode {
+export default class SortFilterSubMenu extends YTNode {
   static type = 'SortFilterSubMenu';
 
   title?: string;
@@ -17,27 +18,26 @@ class SortFilterSubMenu extends YTNode {
     subtitle: string | null;
   }[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
-    if (data.title) {
+    if (Reflect.has(data, 'title')) {
       this.title = data.title;
     }
 
-    if (data.icon?.iconType) {
+    if (Reflect.has(data, 'icon')) {
       this.icon_type = data.icon.iconType;
     }
 
-    if (data.accessibility?.accessibilityData?.label) {
+    if (Reflect.has(data, 'accessibility')) {
       this.label = data.accessibility.accessibilityData.label;
     }
 
-    if (data.tooltip) {
+    if (Reflect.has(data, 'tooltip')) {
       this.tooltip = data.tooltip;
     }
 
-    if (data.subMenuItems) {
-      this.sub_menu_items = data.subMenuItems.map((item: any) => ({
+    if (Reflect.has(data, 'subMenuItems')) {
+      this.sub_menu_items = data.subMenuItems.map((item: RawNode) => ({
         title: item.title,
         selected: item.selected,
         continuation: item.continuation?.reloadContinuationData?.continuation,
@@ -46,6 +46,4 @@ class SortFilterSubMenu extends YTNode {
       }));
     }
   }
-}
-
-export default SortFilterSubMenu;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SubFeedOption.ts b/src/parser/classes/SubFeedOption.ts
index 0ae39164..d9d7c526 100644
--- a/src/parser/classes/SubFeedOption.ts
+++ b/src/parser/classes/SubFeedOption.ts
@@ -1,20 +1,19 @@
-import Text from './misc/Text.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Text from './misc/Text.js';
 
-class SubFeedOption extends YTNode {
+export default class SubFeedOption extends YTNode {
   static type = 'SubFeedOption';
 
   name: Text;
   is_selected: boolean;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.name = new Text(data.name);
     this.is_selected = data.isSelected;
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default SubFeedOption;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SubFeedSelector.ts b/src/parser/classes/SubFeedSelector.ts
index 89e99d42..d349f717 100644
--- a/src/parser/classes/SubFeedSelector.ts
+++ b/src/parser/classes/SubFeedSelector.ts
@@ -1,18 +1,17 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
+import SubFeedOption from './SubFeedOption.js';
 
-class SubFeedSelector extends YTNode {
+export default class SubFeedSelector extends YTNode {
   static type = 'SubFeedSelector';
 
   title: Text;
-  options;
+  options: ObservedArray<SubFeedOption>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
-    this.options = Parser.parse(data.options);
+    this.options = Parser.parseArray(data.options, SubFeedOption);
   }
-}
-
-export default SubFeedSelector;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SubscribeButton.ts b/src/parser/classes/SubscribeButton.ts
index 957cf8ff..cc515b69 100644
--- a/src/parser/classes/SubscribeButton.ts
+++ b/src/parser/classes/SubscribeButton.ts
@@ -1,10 +1,10 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
+import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import SubscriptionNotificationToggleButton from './SubscriptionNotificationToggleButton.js';
-import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
 
-class SubscribeButton extends YTNode {
+export default class SubscribeButton extends YTNode {
   static type = 'SubscribeButton';
 
   title: Text;
@@ -18,7 +18,7 @@ class SubscribeButton extends YTNode {
   notification_preference_button: SubscriptionNotificationToggleButton | null;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.buttonText);
     this.subscribed = data.subscribed;
@@ -28,9 +28,7 @@ class SubscribeButton extends YTNode {
     this.show_preferences = data.showPreferences;
     this.subscribed_text = new Text(data.subscribedButtonText);
     this.unsubscribed_text = new Text(data.unsubscribedButtonText);
-    this.notification_preference_button = Parser.parseItem<SubscriptionNotificationToggleButton>(data.notificationPreferenceButton, SubscriptionNotificationToggleButton);
+    this.notification_preference_button = Parser.parseItem(data.notificationPreferenceButton, SubscriptionNotificationToggleButton);
     this.endpoint = new NavigationEndpoint(data.serviceEndpoints?.[0] || data.onSubscribeEndpoints?.[0]);
   }
-}
-
-export default SubscribeButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/SubscriptionNotificationToggleButton.ts b/src/parser/classes/SubscriptionNotificationToggleButton.ts
index b185a98c..47bb4db3 100644
--- a/src/parser/classes/SubscriptionNotificationToggleButton.ts
+++ b/src/parser/classes/SubscriptionNotificationToggleButton.ts
@@ -1,13 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type SuperParsedResult, YTNode } from '../helpers.js';
 
-class SubscriptionNotificationToggleButton extends YTNode {
+export default class SubscriptionNotificationToggleButton extends YTNode {
   static type = 'SubscriptionNotificationToggleButton';
 
   states: {
     id: string;
     next_id: string;
-    state: any;
+    state: SuperParsedResult<YTNode>;
   };
 
   current_state_id: string;
@@ -15,7 +15,7 @@ class SubscriptionNotificationToggleButton extends YTNode {
 
   constructor(data: any) {
     super();
-    this.states = data.states.map((data: any) => ({
+    this.states = data.states.map((data: RawNode) => ({
       id: data.stateId,
       next_id: data.nextStateId,
       state: Parser.parse(data.state)
@@ -24,6 +24,4 @@ class SubscriptionNotificationToggleButton extends YTNode {
     this.current_state_id = data.currentStateId;
     this.target_id = data.targetId;
   }
-}
-
-export default SubscriptionNotificationToggleButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Tab.ts b/src/parser/classes/Tab.ts
index 50ea5927..c06d219c 100644
--- a/src/parser/classes/Tab.ts
+++ b/src/parser/classes/Tab.ts
@@ -1,26 +1,23 @@
-import Parser from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import SectionList from './SectionList.js';
 import MusicQueue from './MusicQueue.js';
 import RichGrid from './RichGrid.js';
-
 import { YTNode } from '../helpers.js';
 
-class Tab extends YTNode {
+export default class Tab extends YTNode {
   static type = 'Tab';
 
   title: string;
   selected: boolean;
-  endpoint;
-  content;
+  endpoint: NavigationEndpoint;
+  content: SectionList | MusicQueue | RichGrid | null;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = data.title || 'N/A';
-    this.selected = data.selected || false;
+    this.selected = !!data.selected;
     this.endpoint = new NavigationEndpoint(data.endpoint);
     this.content = Parser.parseItem(data.content, [ SectionList, MusicQueue, RichGrid ]);
   }
-}
-
-export default Tab;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/Tabbed.ts b/src/parser/classes/Tabbed.ts
index 1e6bb9e3..cd2d0b0d 100644
--- a/src/parser/classes/Tabbed.ts
+++ b/src/parser/classes/Tabbed.ts
@@ -1,16 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type SuperParsedResult } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class Tabbed extends YTNode {
+export default class Tabbed extends YTNode {
   static type = 'Tabbed';
 
-  contents;
+  contents: SuperParsedResult<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    // TODO: use parseArray instead
     this.contents = Parser.parse(data);
   }
-}
-
-export default Tabbed;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TabbedSearchResults.ts b/src/parser/classes/TabbedSearchResults.ts
index 4111179e..7f540d2b 100644
--- a/src/parser/classes/TabbedSearchResults.ts
+++ b/src/parser/classes/TabbedSearchResults.ts
@@ -1,16 +1,14 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import { type ObservedArray, YTNode } from '../helpers.js';
 import Tab from './Tab.js';
 
-class TabbedSearchResults extends YTNode {
+export default class TabbedSearchResults extends YTNode {
   static type = 'TabbedSearchResults';
 
-  tabs;
+  tabs: ObservedArray<Tab>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.tabs = Parser.parseArray<Tab>(data.tabs, Tab);
+    this.tabs = Parser.parseArray(data.tabs, Tab);
   }
-}
-
-export default TabbedSearchResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TextHeader.ts b/src/parser/classes/TextHeader.ts
index fbdef83a..f9dcd19e 100644
--- a/src/parser/classes/TextHeader.ts
+++ b/src/parser/classes/TextHeader.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class TextHeader extends YTNode {
+export default class TextHeader extends YTNode {
   static type = 'TextHeader';
 
   title: Text;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.style = data.style;
   }
-}
-
-export default TextHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailLandscapePortrait.ts b/src/parser/classes/ThumbnailLandscapePortrait.ts
index a70f8e33..ef84e0bc 100644
--- a/src/parser/classes/ThumbnailLandscapePortrait.ts
+++ b/src/parser/classes/ThumbnailLandscapePortrait.ts
@@ -1,17 +1,16 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 import Thumbnail from './misc/Thumbnail.js';
 
-class ThumbnailLandscapePortrait extends YTNode {
+export default class ThumbnailLandscapePortrait extends YTNode {
   static type = 'ThumbnailLandscapePortrait';
 
   landscape: Thumbnail[];
   portrait: Thumbnail[];
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
     this.landscape = Thumbnail.fromResponse(data.landscape);
     this.portrait = Thumbnail.fromResponse(data.portrait);
   }
-}
-
-export default ThumbnailLandscapePortrait;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayBottomPanel.ts b/src/parser/classes/ThumbnailOverlayBottomPanel.ts
index 41ea727f..da0c2269 100644
--- a/src/parser/classes/ThumbnailOverlayBottomPanel.ts
+++ b/src/parser/classes/ThumbnailOverlayBottomPanel.ts
@@ -1,8 +1,8 @@
 import { YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import type { RawNode } from '../index.js';
 import Text from './misc/Text.js';
 
-class ThumbnailOverlayBottomPanel extends YTNode {
+export default class ThumbnailOverlayBottomPanel extends YTNode {
   static type = 'ThumbnailOverlayBottomPanel';
 
   text?: Text;
@@ -18,6 +18,4 @@ class ThumbnailOverlayBottomPanel extends YTNode {
       this.icon_type = data.icon.iconType;
     }
   }
-}
-
-export default ThumbnailOverlayBottomPanel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayEndorsement.ts b/src/parser/classes/ThumbnailOverlayEndorsement.ts
index e88025b7..92b0e3eb 100644
--- a/src/parser/classes/ThumbnailOverlayEndorsement.ts
+++ b/src/parser/classes/ThumbnailOverlayEndorsement.ts
@@ -1,15 +1,14 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class ThumbnailOverlayEndorsement extends YTNode {
+export default class ThumbnailOverlayEndorsement extends YTNode {
   static type = 'ThumbnailOverlayEndorsement';
 
   text: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text).toString();
   }
-}
-
-export default ThumbnailOverlayEndorsement;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayHoverText.ts b/src/parser/classes/ThumbnailOverlayHoverText.ts
index 112b79e9..bb56c893 100644
--- a/src/parser/classes/ThumbnailOverlayHoverText.ts
+++ b/src/parser/classes/ThumbnailOverlayHoverText.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ThumbnailOverlayHoverText extends YTNode {
+export default class ThumbnailOverlayHoverText extends YTNode {
   static type = 'ThumbnailOverlayHoverText';
 
   text: Text;
   icon_type: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text);
     this.icon_type = data.icon.iconType;
   }
-}
-
-export default ThumbnailOverlayHoverText;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayInlineUnplayable.ts b/src/parser/classes/ThumbnailOverlayInlineUnplayable.ts
index d7133f48..85203c16 100644
--- a/src/parser/classes/ThumbnailOverlayInlineUnplayable.ts
+++ b/src/parser/classes/ThumbnailOverlayInlineUnplayable.ts
@@ -1,17 +1,16 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class ThumbnailOverlayInlineUnplayable extends YTNode {
+export default class ThumbnailOverlayInlineUnplayable extends YTNode {
   static type = 'ThumbnailOverlayInlineUnplayable';
 
   text: string;
   icon_type: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text).toString();
     this.icon_type = data.icon.iconType;
   }
-}
-
-export default ThumbnailOverlayInlineUnplayable;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayLoadingPreview.ts b/src/parser/classes/ThumbnailOverlayLoadingPreview.ts
index 09f5519b..df189ca0 100644
--- a/src/parser/classes/ThumbnailOverlayLoadingPreview.ts
+++ b/src/parser/classes/ThumbnailOverlayLoadingPreview.ts
@@ -1,15 +1,14 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class ThumbnailOverlayLoadingPreview extends YTNode {
+export default class ThumbnailOverlayLoadingPreview extends YTNode {
   static type = 'ThumbnailOverlayLoadingPreview';
 
   text: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text);
   }
-}
-
-export default ThumbnailOverlayLoadingPreview;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayNowPlaying.ts b/src/parser/classes/ThumbnailOverlayNowPlaying.ts
index ec6382d1..12b5fa4f 100644
--- a/src/parser/classes/ThumbnailOverlayNowPlaying.ts
+++ b/src/parser/classes/ThumbnailOverlayNowPlaying.ts
@@ -1,15 +1,14 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class ThumbnailOverlayNowPlaying extends YTNode {
+export default class ThumbnailOverlayNowPlaying extends YTNode {
   static type = 'ThumbnailOverlayNowPlaying';
 
   text: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text).toString();
   }
-}
-
-export default ThumbnailOverlayNowPlaying;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayPinking.ts b/src/parser/classes/ThumbnailOverlayPinking.ts
index 345f2147..6d4d60b8 100644
--- a/src/parser/classes/ThumbnailOverlayPinking.ts
+++ b/src/parser/classes/ThumbnailOverlayPinking.ts
@@ -1,14 +1,13 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ThumbnailOverlayPinking extends YTNode {
+export default class ThumbnailOverlayPinking extends YTNode {
   static type = 'ThumbnailOverlayPinking';
 
   hack: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.hack = data.hack;
   }
-}
-
-export default ThumbnailOverlayPinking;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayPlaybackStatus.ts b/src/parser/classes/ThumbnailOverlayPlaybackStatus.ts
index 3db53792..6ff23348 100644
--- a/src/parser/classes/ThumbnailOverlayPlaybackStatus.ts
+++ b/src/parser/classes/ThumbnailOverlayPlaybackStatus.ts
@@ -1,15 +1,14 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import { type RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class ThumbnailOverlayPlaybackStatus extends YTNode {
+export default class ThumbnailOverlayPlaybackStatus extends YTNode {
   static type = 'ThumbnailOverlayPlaybackStatus';
 
-  text: string;
+  texts: Text[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.text = data.texts.map((text: any) => new Text(text))[0].toString();
+    this.texts = data.texts.map((text: RawNode) => new Text(text));
   }
-}
-
-export default ThumbnailOverlayPlaybackStatus;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayResumePlayback.ts b/src/parser/classes/ThumbnailOverlayResumePlayback.ts
index cc628d46..0ab3fdfd 100644
--- a/src/parser/classes/ThumbnailOverlayResumePlayback.ts
+++ b/src/parser/classes/ThumbnailOverlayResumePlayback.ts
@@ -1,14 +1,13 @@
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ThumbnailOverlayResumePlayback extends YTNode {
+export default class ThumbnailOverlayResumePlayback extends YTNode {
   static type = 'ThumbnailOverlayResumePlayback';
 
   percent_duration_watched: string; // TODO: is this a number?
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.percent_duration_watched = data.percentDurationWatched;
   }
-}
-
-export default ThumbnailOverlayResumePlayback;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlaySidePanel.ts b/src/parser/classes/ThumbnailOverlaySidePanel.ts
index 9bc8c48e..a2fcc326 100644
--- a/src/parser/classes/ThumbnailOverlaySidePanel.ts
+++ b/src/parser/classes/ThumbnailOverlaySidePanel.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ThumbnailOverlaySidePanel extends YTNode {
+export default class ThumbnailOverlaySidePanel extends YTNode {
   static type = 'ThumbnailOverlaySidePanel';
 
   text: Text;
   icon_type: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text);
     this.icon_type = data.icon.iconType;
   }
-}
-
-export default ThumbnailOverlaySidePanel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayTimeStatus.ts b/src/parser/classes/ThumbnailOverlayTimeStatus.ts
index aa05a936..391644e5 100644
--- a/src/parser/classes/ThumbnailOverlayTimeStatus.ts
+++ b/src/parser/classes/ThumbnailOverlayTimeStatus.ts
@@ -1,17 +1,16 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ThumbnailOverlayTimeStatus extends YTNode {
+export default class ThumbnailOverlayTimeStatus extends YTNode {
   static type = 'ThumbnailOverlayTimeStatus';
 
   text: string;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.text).toString();
     this.style = data.style;
   }
-}
-
-export default ThumbnailOverlayTimeStatus;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ThumbnailOverlayToggleButton.ts b/src/parser/classes/ThumbnailOverlayToggleButton.ts
index e1057c45..899fe370 100644
--- a/src/parser/classes/ThumbnailOverlayToggleButton.ts
+++ b/src/parser/classes/ThumbnailOverlayToggleButton.ts
@@ -1,10 +1,11 @@
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ThumbnailOverlayToggleButton extends YTNode {
+export default class ThumbnailOverlayToggleButton extends YTNode {
   static type = 'ThumbnailOverlayToggleButton';
 
-  is_toggled: boolean | null;
+  is_toggled?: boolean;
 
   icon_type: {
     toggled: string;
@@ -19,9 +20,11 @@ class ThumbnailOverlayToggleButton extends YTNode {
   toggled_endpoint: NavigationEndpoint;
   untoggled_endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.is_toggled = data.isToggled || null;
+    if (Reflect.has(data, 'isToggled')) {
+      this.is_toggled = data.isToggled;
+    }
 
     this.icon_type = {
       toggled: data.toggledIcon.iconType,
@@ -36,6 +39,4 @@ class ThumbnailOverlayToggleButton extends YTNode {
     this.toggled_endpoint = new NavigationEndpoint(data.toggledServiceEndpoint);
     this.untoggled_endpoint = new NavigationEndpoint(data.untoggledServiceEndpoint);
   }
-}
-
-export default ThumbnailOverlayToggleButton;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TimedMarkerDecoration.ts b/src/parser/classes/TimedMarkerDecoration.ts
index a1b121e5..320e192d 100644
--- a/src/parser/classes/TimedMarkerDecoration.ts
+++ b/src/parser/classes/TimedMarkerDecoration.ts
@@ -1,7 +1,8 @@
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class TimedMarkerDecoration extends YTNode {
+export default class TimedMarkerDecoration extends YTNode {
   static type = 'TimedMarkerDecoration';
 
   visible_time_range_start_millis: number;
@@ -10,7 +11,7 @@ class TimedMarkerDecoration extends YTNode {
   label: Text;
   icon: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.visible_time_range_start_millis = data.visibleTimeRangeStartMillis;
     this.visible_time_range_end_millis = data.visibleTimeRangeEndMillis;
@@ -18,6 +19,4 @@ class TimedMarkerDecoration extends YTNode {
     this.label = new Text(data.label);
     this.icon = data.icon;
   }
-}
-
-export default TimedMarkerDecoration;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TitleAndButtonListHeader.ts b/src/parser/classes/TitleAndButtonListHeader.ts
index 66221bd9..14e1ab58 100644
--- a/src/parser/classes/TitleAndButtonListHeader.ts
+++ b/src/parser/classes/TitleAndButtonListHeader.ts
@@ -1,15 +1,14 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class TitleAndButtonListHeader extends YTNode {
+export default class TitleAndButtonListHeader extends YTNode {
   static type = 'TitleAndButtonListHeader';
 
   title: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default TitleAndButtonListHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ToggleButton.ts b/src/parser/classes/ToggleButton.ts
index 5b6acfa6..f8a3b816 100644
--- a/src/parser/classes/ToggleButton.ts
+++ b/src/parser/classes/ToggleButton.ts
@@ -1,8 +1,9 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class ToggleButton extends YTNode {
+export default class ToggleButton extends YTNode {
   static type = 'ToggleButton';
 
   text: Text;
@@ -12,16 +13,14 @@ class ToggleButton extends YTNode {
   is_toggled: boolean;
   is_disabled: boolean;
   icon_type: string;
-
-  like_count;
-  short_like_count;
-
+  like_count?: number;
+  short_like_count?: string;
   endpoint: NavigationEndpoint;
   toggled_endpoint: NavigationEndpoint;
-  button_id: string | null;
-  target_id: string | null;
+  button_id?: string;
+  target_id?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.text = new Text(data.defaultText);
     this.toggled_text = new Text(data.toggledText);
@@ -47,9 +46,13 @@ class ToggleButton extends YTNode {
         new NavigationEndpoint(data.defaultServiceEndpoint);
 
     this.toggled_endpoint = new NavigationEndpoint(data.toggledServiceEndpoint);
-    this.button_id = data.toggleButtonSupportedData?.toggleButtonIdData?.id || null;
-    this.target_id = data.targetId || null;
-  }
-}
 
-export default ToggleButton;
\ No newline at end of file
+    if (Reflect.has(data, 'toggleButtonSupportedData') && Reflect.has(data.toggleButtonSupportedData, 'toggleButtonIdData')) {
+      this.button_id = data.toggleButtonSupportedData.toggleButtonIdData.id;
+    }
+
+    if (Reflect.has(data, 'targetId')) {
+      this.target_id = data.targetId;
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/Tooltip.ts b/src/parser/classes/Tooltip.ts
index 6646e09a..aba0b3ac 100644
--- a/src/parser/classes/Tooltip.ts
+++ b/src/parser/classes/Tooltip.ts
@@ -1,8 +1,9 @@
 import Text from './misc/Text.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class Tooltip extends YTNode {
+export default class Tooltip extends YTNode {
   static type = 'Tooltip';
 
   promo_config: {
@@ -18,13 +19,12 @@ class Tooltip extends YTNode {
   dismiss_stratedy: string;
   dwell_time_ms: number;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     this.promo_config = {
       promo_id: data.promoConfig.promoId,
       impression_endpoints: data.promoConfig.impressionEndpoints
-        .map((endpoint: any) => new NavigationEndpoint(endpoint)),
+        .map((endpoint: RawNode) => new NavigationEndpoint(endpoint)),
       accept: new NavigationEndpoint(data.promoConfig.acceptCommand),
       dismiss: new NavigationEndpoint(data.promoConfig.dismissCommand)
     };
@@ -35,6 +35,4 @@ class Tooltip extends YTNode {
     this.dismiss_stratedy = data.dismissStrategy.type;
     this.dwell_time_ms = parseInt(data.dwellTimeMs);
   }
-}
-
-export default Tooltip;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TopicChannelDetails.ts b/src/parser/classes/TopicChannelDetails.ts
index dfb786d1..ecacbcfa 100644
--- a/src/parser/classes/TopicChannelDetails.ts
+++ b/src/parser/classes/TopicChannelDetails.ts
@@ -1,12 +1,11 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
-
-import Text from './misc/Text.js';
-import Thumbnail from './misc/Thumbnail.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
 import SubscribeButton from './SubscribeButton.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class TopicChannelDetails extends YTNode {
+export default class TopicChannelDetails extends YTNode {
   static type = 'TopicChannelDetails';
 
   title: Text;
@@ -15,15 +14,12 @@ class TopicChannelDetails extends YTNode {
   subscribe_button: SubscribeButton | null;
   endpoint: NavigationEndpoint;
 
-  constructor (data: any) {
+  constructor (data: RawNode) {
     super();
-
     this.title = new Text(data.title);
     this.avatar = Thumbnail.fromResponse(data.thumbnail ?? data.avatar);
     this.subtitle = new Text(data.subtitle);
-    this.subscribe_button = Parser.parseItem<SubscribeButton>(data.subscribeButton, SubscribeButton);
+    this.subscribe_button = Parser.parseItem(data.subscribeButton, SubscribeButton);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
   }
-}
-
-export default TopicChannelDetails;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TwoColumnBrowseResults.ts b/src/parser/classes/TwoColumnBrowseResults.ts
index 9621d1de..07be0ead 100644
--- a/src/parser/classes/TwoColumnBrowseResults.ts
+++ b/src/parser/classes/TwoColumnBrowseResults.ts
@@ -1,17 +1,15 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type SuperParsedResult } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class TwoColumnBrowseResults extends YTNode {
+export default class TwoColumnBrowseResults extends YTNode {
   static type = 'TwoColumnBrowseResults';
 
-  tabs;
-  secondary_contents;
+  tabs: SuperParsedResult<YTNode>;
+  secondary_contents: SuperParsedResult<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.tabs = Parser.parse(data.tabs);
     this.secondary_contents = Parser.parse(data.secondaryContents);
   }
-}
-
-export default TwoColumnBrowseResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TwoColumnSearchResults.ts b/src/parser/classes/TwoColumnSearchResults.ts
index 1d89d025..cc2c552b 100644
--- a/src/parser/classes/TwoColumnSearchResults.ts
+++ b/src/parser/classes/TwoColumnSearchResults.ts
@@ -1,17 +1,15 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type SuperParsedResult } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class TwoColumnSearchResults extends YTNode {
+export default class TwoColumnSearchResults extends YTNode {
   static type = 'TwoColumnSearchResults';
 
-  primary_contents;
-  secondary_contents;
+  primary_contents: SuperParsedResult<YTNode>;
+  secondary_contents: SuperParsedResult<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.primary_contents = Parser.parse(data.primaryContents);
     this.secondary_contents = Parser.parse(data.secondaryContents);
   }
-}
-
-export default TwoColumnSearchResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/TwoColumnWatchNextResults.ts b/src/parser/classes/TwoColumnWatchNextResults.ts
index 2ebdc082..868faf1f 100644
--- a/src/parser/classes/TwoColumnWatchNextResults.ts
+++ b/src/parser/classes/TwoColumnWatchNextResults.ts
@@ -1,22 +1,21 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
-import Text from './misc/Text.js';
-import Author from './misc/Author.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
-
 import Menu from './menus/Menu.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
 
 type AutoplaySet = {
   autoplay_video: NavigationEndpoint,
   next_button_video?: NavigationEndpoint
 };
 
-class TwoColumnWatchNextResults extends YTNode {
+export default class TwoColumnWatchNextResults extends YTNode {
   static type = 'TwoColumnWatchNextResults';
 
-  results;
-  secondary_results;
-  conversation_bar;
+  results: ObservedArray<YTNode>;
+  secondary_results: ObservedArray<YTNode>;
+  conversation_bar: YTNode;
   playlist?: {
     id: string,
     title: string,
@@ -32,13 +31,14 @@ class TwoColumnWatchNextResults extends YTNode {
     count_down_secs?: number
   };
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.results = Parser.parseArray(data.results?.results.contents);
     this.secondary_results = Parser.parseArray(data.secondaryResults?.secondaryResults.results);
     this.conversation_bar = Parser.parseItem(data?.conversationBar);
 
     const playlistData = data.playlist?.playlist;
+
     if (playlistData) {
       this.playlist = {
         id: playlistData.playlistId,
@@ -56,7 +56,7 @@ class TwoColumnWatchNextResults extends YTNode {
     const autoplayData = data.autoplay?.autoplay;
     if (autoplayData) {
       this.autoplay = {
-        sets: autoplayData.sets.map((set: any) => this.#parseAutoplaySet(set))
+        sets: autoplayData.sets.map((set: RawNode) => this.#parseAutoplaySet(set))
       };
       if (autoplayData.modifiedSets) {
         this.autoplay.modified_sets = autoplayData.modifiedSets.map((set: any) => this.#parseAutoplaySet(set));
@@ -67,7 +67,7 @@ class TwoColumnWatchNextResults extends YTNode {
     }
   }
 
-  #parseAutoplaySet(data: any): AutoplaySet {
+  #parseAutoplaySet(data: RawNode): AutoplaySet {
     const result = {
       autoplay_video: new NavigationEndpoint(data.autoplayVideo)
     } as AutoplaySet;
@@ -78,6 +78,4 @@ class TwoColumnWatchNextResults extends YTNode {
 
     return result;
   }
-}
-
-export default TwoColumnWatchNextResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/UniversalWatchCard.ts b/src/parser/classes/UniversalWatchCard.ts
index ef0f430b..f46ec20d 100644
--- a/src/parser/classes/UniversalWatchCard.ts
+++ b/src/parser/classes/UniversalWatchCard.ts
@@ -1,25 +1,22 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
 
-class UniversalWatchCard extends YTNode {
+export default class UniversalWatchCard extends YTNode {
   static type = 'UniversalWatchCard';
 
-  header;
-  call_to_action;
-  sections;
+  header: YTNode;
+  call_to_action: YTNode;
+  sections: ObservedArray<YTNode>;
   collapsed_label?: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.header = Parser.parseItem(data.header);
     this.call_to_action = Parser.parseItem(data.callToAction);
     this.sections = Parser.parseArray(data.sections);
-
-    if (data.collapsedLabel) {
+    if (Reflect.has(data, 'collapsedLabel')) {
       this.collapsed_label = new Text(data.collapsedLabel);
     }
   }
-}
-
-export default UniversalWatchCard;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/UpsellDialog.ts b/src/parser/classes/UpsellDialog.ts
index 85f0d94b..ae65ebc2 100644
--- a/src/parser/classes/UpsellDialog.ts
+++ b/src/parser/classes/UpsellDialog.ts
@@ -1,9 +1,9 @@
-import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Button from './Button.js';
 import Text from './misc/Text.js';
 
-class UpsellDialog extends YTNode {
+export default class UpsellDialog extends YTNode {
   static type = 'UpsellDialog';
 
   message_title: Text;
@@ -12,7 +12,7 @@ class UpsellDialog extends YTNode {
   dismiss_button: Button | null;
   is_visible: boolean;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.message_title = new Text(data.dialogMessageTitle);
     this.message_text = new Text(data.dialogMessageText);
@@ -20,6 +20,4 @@ class UpsellDialog extends YTNode {
     this.dismiss_button = Parser.parseItem(data.dismissButton, Button);
     this.is_visible = data.isVisible;
   }
-}
-
-export default UpsellDialog;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VerticalList.ts b/src/parser/classes/VerticalList.ts
index 04f5f700..1a4b5d9a 100644
--- a/src/parser/classes/VerticalList.ts
+++ b/src/parser/classes/VerticalList.ts
@@ -1,25 +1,23 @@
-import Parser from '../index.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
-import { YTNode } from '../helpers.js';
 
-class VerticalList extends YTNode {
+export default class VerticalList extends YTNode {
   static type = 'VerticalList';
 
-  items;
+  items: ObservedArray<YTNode>;
   collapsed_item_count: string; // Number?
   collapsed_state_button_text: Text;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
     this.collapsed_item_count = data.collapsedItemCount;
     this.collapsed_state_button_text = new Text(data.collapsedStateButtonText);
   }
 
-  // XXX: alias for consistency
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default VerticalList;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VerticalWatchCardList.ts b/src/parser/classes/VerticalWatchCardList.ts
index cd0908a0..417dd0e5 100644
--- a/src/parser/classes/VerticalWatchCardList.ts
+++ b/src/parser/classes/VerticalWatchCardList.ts
@@ -1,23 +1,24 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import NavigationEndpoint from './NavigationEndpoint.js';
-import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
 
-class VerticalWatchCardList extends YTNode {
+export default class VerticalWatchCardList extends YTNode {
   static type = 'VerticalWatchCardList';
 
-  items;
-  contents;
+  items: ObservedArray<YTNode>;
   view_all_text: Text;
   view_all_endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
-    this.contents = this.items; // XXX: alias for consistency
     this.view_all_text = new Text(data.viewAllText);
     this.view_all_endpoint = new NavigationEndpoint(data.viewAllEndpoint);
   }
-}
 
-export default VerticalWatchCardList;
\ No newline at end of file
+  // XXX: Alias for consistency.
+  get contents() {
+    return this.items;
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/Video.ts b/src/parser/classes/Video.ts
index e33dcf6e..7d986f94 100644
--- a/src/parser/classes/Video.ts
+++ b/src/parser/classes/Video.ts
@@ -1,70 +1,73 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import Author from './misc/Author.js';
-import Menu from './menus/Menu.js';
-import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import MetadataBadge from './MetadataBadge.js';
-import ExpandableMetadata from './ExpandableMetadata.js';
-import ThumbnailOverlayTimeStatus from './ThumbnailOverlayTimeStatus.js';
-
 import { timeToSeconds } from '../../utils/Utils.js';
-import { YTNode } from '../helpers.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import ExpandableMetadata from './ExpandableMetadata.js';
+import MetadataBadge from './MetadataBadge.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import ThumbnailOverlayTimeStatus from './ThumbnailOverlayTimeStatus.js';
+import Menu from './menus/Menu.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
 
-class Video extends YTNode {
+export default class Video extends YTNode {
   static type = 'Video';
 
   id: string;
   title: Text;
-  description_snippet: Text | null;
-  snippets: {
+  description_snippet?: Text;
+  snippets?: {
     text: Text;
     hover_text: Text;
   }[];
   expandable_metadata: ExpandableMetadata | null;
-
   thumbnails: Thumbnail[];
-  thumbnail_overlays;
-  rich_thumbnail;
+  thumbnail_overlays: ObservedArray<YTNode>;
+  rich_thumbnail?: YTNode;
   author: Author;
   badges: MetadataBadge[];
   endpoint: NavigationEndpoint;
   published: Text;
   view_count: Text;
   short_view_count: Text;
-  upcoming;
-
+  upcoming?: Date;
   duration: {
     text: string;
     seconds: number;
   };
-
   show_action_menu: boolean;
   is_watched: boolean;
   menu: Menu | null;
-  search_video_result_entity_key: string;
+  search_video_result_entity_key?: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-
     const overlay_time_status = data.thumbnailOverlays
       .find((overlay: any) => overlay.thumbnailOverlayTimeStatusRenderer)
       ?.thumbnailOverlayTimeStatusRenderer.text || 'N/A';
 
     this.id = data.videoId;
     this.title = new Text(data.title);
-    this.description_snippet = data.descriptionSnippet ? new Text(data.descriptionSnippet) : null;
 
-    this.snippets = data.detailedMetadataSnippets?.map((snippet: any) => ({
-      text: new Text(snippet.snippetText),
-      hover_text: new Text(snippet.snippetHoverText)
-    })) || [];
+    if (Reflect.has(data, 'descriptionSnippet')) {
+      this.description_snippet = new Text(data.descriptionSnippet);
+    }
+
+    if (Reflect.has(data, 'detaildMetadataSnippets')) {
+      this.snippets = data.detailedMetadataSnippets.map((snippet: RawNode) => ({
+        text: new Text(snippet.snippetText),
+        hover_text: new Text(snippet.snippetHoverText)
+      }));
+    }
 
     this.expandable_metadata = Parser.parseItem(data.expandableMetadata, ExpandableMetadata);
-
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.thumbnail_overlays = Parser.parseArray(data.thumbnailOverlays);
-    this.rich_thumbnail = data.richThumbnail ? Parser.parseItem(data.richThumbnail) : null;
+
+    if (Reflect.has(data, 'richThumbnail')) {
+      this.rich_thumbnail = Parser.parseItem(data.richThumbnail);
+    }
+
     this.author = new Author(data.ownerText, data.ownerBadges, data.channelThumbnailSupportedRenderers?.channelThumbnailWithLinkRenderer?.thumbnail);
     this.badges = Parser.parseArray(data.badges, MetadataBadge);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
@@ -72,9 +75,8 @@ class Video extends YTNode {
     this.view_count = new Text(data.viewCountText);
     this.short_view_count = new Text(data.shortViewCountText);
 
-    const upcoming = data.upcomingEventData && Number(`${data.upcomingEventData.startTime}000`);
-    if (upcoming) {
-      this.upcoming = new Date(upcoming);
+    if (Reflect.has(data, 'upcomingEventData')) {
+      this.upcoming = new Date(Number(`${data.upcomingEventData.startTime}000`));
     }
 
     this.duration = {
@@ -82,16 +84,20 @@ class Video extends YTNode {
       seconds: timeToSeconds(data.lengthText ? new Text(data.lengthText).toString() : new Text(overlay_time_status).toString())
     };
 
-    this.show_action_menu = data.showActionMenu;
-    this.is_watched = data.isWatched || false;
-    this.menu = Parser.parseItem<Menu>(data.menu, Menu);
-    this.search_video_result_entity_key = data.searchVideoResultEntityKey;
+    this.show_action_menu = !!data.showActionMenu;
+    this.is_watched = !!data.isWatched;
+    this.menu = Parser.parseItem(data.menu, Menu);
+
+    if (Reflect.has(data, 'searchVideoResultEntityKey')) {
+      this.search_video_result_entity_key = data.searchVideoResultEntityKey;
+    }
   }
 
   get description(): string {
-    if (this.snippets.length > 0) {
+    if (this.snippets) {
       return this.snippets.map((snip) => snip.text.toString()).join('');
     }
+
     return this.description_snippet?.toString() || '';
   }
 
@@ -121,6 +127,4 @@ class Video extends YTNode {
   get best_thumbnail(): Thumbnail | undefined {
     return this.thumbnails[0];
   }
-}
-
-export default Video;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VideoCard.ts b/src/parser/classes/VideoCard.ts
index bff7047f..88de7fc0 100644
--- a/src/parser/classes/VideoCard.ts
+++ b/src/parser/classes/VideoCard.ts
@@ -1,11 +1,10 @@
+import type { RawNode } from '../index.js';
 import Video from './Video.js';
 
-class VideoCard extends Video {
+export default class VideoCard extends Video {
   static type = 'VideoCard';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default VideoCard;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VideoInfoCardContent.ts b/src/parser/classes/VideoInfoCardContent.ts
index 54b61761..d119cfbd 100644
--- a/src/parser/classes/VideoInfoCardContent.ts
+++ b/src/parser/classes/VideoInfoCardContent.ts
@@ -1,9 +1,10 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 import Text from './misc/Text.js';
 import Thumbnail from './misc/Thumbnail.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import { YTNode } from '../helpers.js';
 
-class VideoInfoCardContent extends YTNode {
+export default class VideoInfoCardContent extends YTNode {
   static type = 'VideoInfoCardContent';
 
   title: Text;
@@ -13,7 +14,7 @@ class VideoInfoCardContent extends YTNode {
   duration: Text;
   endpoint: NavigationEndpoint;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.videoTitle);
     this.channel_name = new Text(data.channelName);
@@ -22,6 +23,4 @@ class VideoInfoCardContent extends YTNode {
     this.duration = new Text(data.lengthString);
     this.endpoint = new NavigationEndpoint(data.action);
   }
-}
-
-export default VideoInfoCardContent;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VideoOwner.ts b/src/parser/classes/VideoOwner.ts
index 00242ba4..8f50d712 100644
--- a/src/parser/classes/VideoOwner.ts
+++ b/src/parser/classes/VideoOwner.ts
@@ -1,18 +1,19 @@
 import Text from './misc/Text.js';
 import Author from './misc/Author.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
 
-class VideoOwner extends YTNode {
+export default class VideoOwner extends YTNode {
   static type = 'VideoOwner';
 
   subscription_button;
   subscriber_count: Text;
   author: Author;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     // TODO: check this
-    this.subscription_button = data.subscriptionButton || null;
+    this.subscription_button = data.subscriptionButton;
     this.subscriber_count = new Text(data.subscriberCountText);
 
     this.author = new Author({
@@ -20,6 +21,4 @@ class VideoOwner extends YTNode {
       navigationEndpoint: data.navigationEndpoint
     }, data.badges, data.thumbnail);
   }
-}
-
-export default VideoOwner;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VideoPrimaryInfo.ts b/src/parser/classes/VideoPrimaryInfo.ts
index 7ee9cac7..d92ef805 100644
--- a/src/parser/classes/VideoPrimaryInfo.ts
+++ b/src/parser/classes/VideoPrimaryInfo.ts
@@ -1,16 +1,16 @@
+import type { ObservedArray } from '../helpers.js';
 import { YTNode } from '../helpers.js';
 import type { RawNode } from '../index.js';
-import type { ObservedArray } from '../helpers.js';
 import Parser from '../index.js';
-import Text from './misc/Text.js';
 import MetadataBadge from './MetadataBadge.js';
 import Menu from './menus/Menu.js';
+import Text from './misc/Text.js';
 
-class VideoPrimaryInfo extends YTNode {
+export default class VideoPrimaryInfo extends YTNode {
   static type = 'VideoPrimaryInfo';
 
   title: Text;
-  super_title_link: Text;
+  super_title_link?: Text;
   view_count: Text;
   short_view_count: Text;
   badges: ObservedArray<MetadataBadge>;
@@ -21,7 +21,11 @@ class VideoPrimaryInfo extends YTNode {
   constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
-    this.super_title_link = new Text(data.superTitleLink);
+
+    if (Reflect.has(data, 'superTitleLink')) {
+      this.super_title_link = new Text(data.superTitleLink);
+    }
+
     this.view_count = new Text(data.viewCount?.videoViewCountRenderer?.viewCount);
     this.short_view_count = new Text(data.viewCount?.videoViewCountRenderer?.shortViewCount);
     this.badges = Parser.parseArray(data.badges, MetadataBadge);
@@ -29,6 +33,4 @@ class VideoPrimaryInfo extends YTNode {
     this.relative_date = new Text(data.relativeDateText);
     this.menu = Parser.parseItem(data.videoActions, Menu);
   }
-}
-
-export default VideoPrimaryInfo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/VideoSecondaryInfo.ts b/src/parser/classes/VideoSecondaryInfo.ts
index fa6cccd8..5110d048 100644
--- a/src/parser/classes/VideoSecondaryInfo.ts
+++ b/src/parser/classes/VideoSecondaryInfo.ts
@@ -1,4 +1,4 @@
-import Parser, { RawNode } from '../index.js';
+import Parser, { type RawNode } from '../index.js';
 import Text from './misc/Text.js';
 import Button from './Button.js';
 import VideoOwner from './VideoOwner.js';
@@ -6,7 +6,7 @@ import SubscribeButton from './SubscribeButton.js';
 import MetadataRowContainer from './MetadataRowContainer.js';
 import { YTNode } from '../helpers.js';
 
-class VideoSecondaryInfo extends YTNode {
+export default class VideoSecondaryInfo extends YTNode {
   static type = 'VideoSecondaryInfo';
 
   owner: VideoOwner | null;
@@ -28,7 +28,7 @@ class VideoSecondaryInfo extends YTNode {
     }
 
     this.subscribe_button = Parser.parseItem(data.subscribeButton, [ SubscribeButton, Button ]);
-    this.metadata = Parser.parseItem<MetadataRowContainer>(data.metadataRowContainer, MetadataRowContainer);
+    this.metadata = Parser.parseItem(data.metadataRowContainer, MetadataRowContainer);
     this.show_more_text = data.showMoreText;
     this.show_less_text = data.showLessText;
     this.default_expanded = data.defaultExpanded;
@@ -102,6 +102,4 @@ class VideoSecondaryInfo extends YTNode {
 
     return { runs };
   }
-}
-
-export default VideoSecondaryInfo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/WatchCardCompactVideo.ts b/src/parser/classes/WatchCardCompactVideo.ts
index 54539f19..7b101bf4 100644
--- a/src/parser/classes/WatchCardCompactVideo.ts
+++ b/src/parser/classes/WatchCardCompactVideo.ts
@@ -1,21 +1,20 @@
-import Text from './misc/Text.js';
 import { timeToSeconds } from '../../utils/Utils.js';
 import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
 
-class WatchCardCompactVideo extends YTNode {
+export default class WatchCardCompactVideo extends YTNode {
   static type = 'WatchCardCompactVideo';
 
   title: Text;
   subtitle: Text;
-
   duration: {
     text: string;
     seconds: number;
   };
-
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.subtitle = new Text(data.subtitle);
@@ -27,6 +26,4 @@ class WatchCardCompactVideo extends YTNode {
 
     this.style = data.style;
   }
-}
-
-export default WatchCardCompactVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/WatchCardHeroVideo.ts b/src/parser/classes/WatchCardHeroVideo.ts
index 2b235e0e..f3c98464 100644
--- a/src/parser/classes/WatchCardHeroVideo.ts
+++ b/src/parser/classes/WatchCardHeroVideo.ts
@@ -1,22 +1,20 @@
-import Parser from '../index.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
 import { YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
 
-class WatchCardHeroVideo extends YTNode {
+export default class WatchCardHeroVideo extends YTNode {
   static type = 'WatchCardHeroVideo';
 
   endpoint: NavigationEndpoint;
-  call_to_action_button;
-  hero_image;
+  call_to_action_button: YTNode;
+  hero_image: YTNode;
   label: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
     this.call_to_action_button = Parser.parseItem(data.callToActionButton);
     this.hero_image = Parser.parseItem(data.heroImage);
     this.label = data.lengthText?.accessibility.accessibilityData.label || '';
   }
-}
-
-export default WatchCardHeroVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/WatchCardRichHeader.ts b/src/parser/classes/WatchCardRichHeader.ts
index 35626e3a..f12ecaca 100644
--- a/src/parser/classes/WatchCardRichHeader.ts
+++ b/src/parser/classes/WatchCardRichHeader.ts
@@ -1,9 +1,10 @@
-import Author from './misc/Author.js';
-import NavigationEndpoint from './NavigationEndpoint.js';
-import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import { type RawNode } from '../index.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+import Author from './misc/Author.js';
+import Text from './misc/Text.js';
 
-class WatchCardRichHeader extends YTNode {
+export default class WatchCardRichHeader extends YTNode {
   static type = 'WatchCardRichHeader';
 
   title: Text;
@@ -12,7 +13,7 @@ class WatchCardRichHeader extends YTNode {
   author: Author;
   style: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
     this.title_endpoint = new NavigationEndpoint(data.titleNavigationEndpoint);
@@ -21,6 +22,4 @@ class WatchCardRichHeader extends YTNode {
     this.author.name = this.title.toString();
     this.style = data.style;
   }
-}
-
-export default WatchCardRichHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/WatchCardSectionSequence.ts b/src/parser/classes/WatchCardSectionSequence.ts
index f19e89a3..95c58b36 100644
--- a/src/parser/classes/WatchCardSectionSequence.ts
+++ b/src/parser/classes/WatchCardSectionSequence.ts
@@ -1,15 +1,13 @@
-import Parser from '../index.js';
-import { YTNode } from '../helpers.js';
+import { ObservedArray, YTNode } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 
-class WatchCardSectionSequence extends YTNode {
+export default class WatchCardSectionSequence extends YTNode {
   static type = 'WatchCardSectionSequence';
 
-  lists;
+  lists: ObservedArray<YTNode>;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.lists = Parser.parseArray(data.lists);
   }
-}
-
-export default WatchCardSectionSequence;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/WatchNextEndScreen.ts b/src/parser/classes/WatchNextEndScreen.ts
index feefbd1c..99bb2be9 100644
--- a/src/parser/classes/WatchNextEndScreen.ts
+++ b/src/parser/classes/WatchNextEndScreen.ts
@@ -1,20 +1,18 @@
-import Parser from '../index.js';
-import Text from './misc/Text.js';
-import EndScreenVideo from './EndScreenVideo.js';
+import { YTNode, type ObservedArray } from '../helpers.js';
+import Parser, { type RawNode } from '../index.js';
 import EndScreenPlaylist from './EndScreenPlaylist.js';
-import { YTNode } from '../helpers.js';
+import EndScreenVideo from './EndScreenVideo.js';
+import Text from './misc/Text.js';
 
-class WatchNextEndScreen extends YTNode {
+export default class WatchNextEndScreen extends YTNode {
   static type = 'WatchNextEndScreen';
 
-  results;
+  results: ObservedArray<EndScreenVideo | EndScreenPlaylist>;
   title: string;
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
     this.results = Parser.parseArray(data.results, [ EndScreenVideo, EndScreenPlaylist ]);
     this.title = new Text(data.title).toString();
   }
-}
-
-export default WatchNextEndScreen;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/WatchNextTabbedResults.ts b/src/parser/classes/WatchNextTabbedResults.ts
index 683960a7..7947564f 100644
--- a/src/parser/classes/WatchNextTabbedResults.ts
+++ b/src/parser/classes/WatchNextTabbedResults.ts
@@ -1,11 +1,10 @@
+import type { RawNode } from '../index.js';
 import TwoColumnBrowseResults from './TwoColumnBrowseResults.js';
 
-class WatchNextTabbedResults extends TwoColumnBrowseResults {
+export default class WatchNextTabbedResults extends TwoColumnBrowseResults {
   static type = 'WatchNextTabbedResults';
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default WatchNextTabbedResults;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/YpcTrailer.ts b/src/parser/classes/YpcTrailer.ts
index c4e8d3b4..529efa9a 100644
--- a/src/parser/classes/YpcTrailer.ts
+++ b/src/parser/classes/YpcTrailer.ts
@@ -1,17 +1,15 @@
 import { YTNode } from '../helpers.js';
-import { RawNode } from '../index.js';
+import type { IRawResponse, RawNode } from '../index.js';
 
-class YpcTrailer extends YTNode {
+export default class YpcTrailer extends YTNode {
   static type = 'YpcTrailer';
 
   video_message: string;
-  player_response;
+  player_response: IRawResponse;
 
   constructor(data: RawNode) {
     super();
     this.video_message = data.fullVideoMessage;
     this.player_response = data.unserializedPlayerResponse;
   }
-}
-
-export default YpcTrailer;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/actions/AppendContinuationItemsAction.ts b/src/parser/classes/actions/AppendContinuationItemsAction.ts
index 5ca0cc00..9e5f5159 100644
--- a/src/parser/classes/actions/AppendContinuationItemsAction.ts
+++ b/src/parser/classes/actions/AppendContinuationItemsAction.ts
@@ -1,11 +1,11 @@
 import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
+import { type SuperParsedResult, YTNode } from '../../helpers.js';
 
-class AppendContinuationItemsAction extends YTNode {
+export default class AppendContinuationItemsAction extends YTNode {
   static type = 'AppendContinuationItemsAction';
 
-  items;
+  items: SuperParsedResult<YTNode>;
   target: string;
 
   constructor(data: RawNode) {
@@ -13,6 +13,4 @@ class AppendContinuationItemsAction extends YTNode {
     this.items = Parser.parse(data.continuationItems);
     this.target = data.target;
   }
-}
-
-export default AppendContinuationItemsAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/actions/OpenPopupAction.ts b/src/parser/classes/actions/OpenPopupAction.ts
index bc8a3254..8dfb91d2 100644
--- a/src/parser/classes/actions/OpenPopupAction.ts
+++ b/src/parser/classes/actions/OpenPopupAction.ts
@@ -2,17 +2,15 @@ import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class OpenPopupAction extends YTNode {
+export default class OpenPopupAction extends YTNode {
   static type = 'OpenPopupAction';
 
-  popup;
-  popup_type;
+  popup: YTNode;
+  popup_type: string;
 
   constructor(data: RawNode) {
     super();
     this.popup = Parser.parseItem(data.popup);
     this.popup_type = data.popupType;
   }
-}
-
-export default OpenPopupAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/AnalyticsMainAppKeyMetrics.ts b/src/parser/classes/analytics/AnalyticsMainAppKeyMetrics.ts
index 526de8e2..280eee3d 100644
--- a/src/parser/classes/analytics/AnalyticsMainAppKeyMetrics.ts
+++ b/src/parser/classes/analytics/AnalyticsMainAppKeyMetrics.ts
@@ -2,7 +2,7 @@ import DataModelSection from './DataModelSection.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AnalyticsMainAppKeyMetrics extends YTNode {
+export default class AnalyticsMainAppKeyMetrics extends YTNode {
   static type = 'AnalyticsMainAppKeyMetrics';
 
   period: string;
@@ -11,9 +11,11 @@ class AnalyticsMainAppKeyMetrics extends YTNode {
   constructor(data: RawNode) {
     super();
     this.period = data.cardData.periodLabel;
-    const metrics_data = data.cardData.sections[0].analyticsKeyMetricsData;
-    this.sections = metrics_data.dataModel.sections.map((section: any) => new DataModelSection(section));
-  }
-}
 
-export default AnalyticsMainAppKeyMetrics;
\ No newline at end of file
+    const metrics_data = data.cardData.sections[0].analyticsKeyMetricsData;
+
+    this.sections = metrics_data.dataModel.sections.map(
+      (section: any) => new DataModelSection(section)
+    );
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/AnalyticsRoot.ts b/src/parser/classes/analytics/AnalyticsRoot.ts
index bd3849b4..1f469260 100644
--- a/src/parser/classes/analytics/AnalyticsRoot.ts
+++ b/src/parser/classes/analytics/AnalyticsRoot.ts
@@ -1,7 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AnalyticsRoot extends YTNode {
+export default class AnalyticsRoot extends YTNode {
   static type = 'AnalyticsRoot';
 
   title: string;
@@ -41,6 +41,4 @@ class AnalyticsRoot extends YTNode {
 
     this.use_main_app_specs = data.analyticsTableCarouselData.useMainAppSpecs;
   }
-}
-
-export default AnalyticsRoot;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/AnalyticsShortsCarouselCard.ts b/src/parser/classes/analytics/AnalyticsShortsCarouselCard.ts
index ce169ce5..2167c40f 100644
--- a/src/parser/classes/analytics/AnalyticsShortsCarouselCard.ts
+++ b/src/parser/classes/analytics/AnalyticsShortsCarouselCard.ts
@@ -1,8 +1,8 @@
+import NavigationEndpoint from '../NavigationEndpoint.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-import NavigationEndpoint from '../NavigationEndpoint.js';
 
-class AnalyticsShortsCarouselCard extends YTNode {
+export default class AnalyticsShortsCarouselCard extends YTNode {
   static type = 'AnalyticsShortsCarouselCard';
 
   title: string;
@@ -21,6 +21,4 @@ class AnalyticsShortsCarouselCard extends YTNode {
       endpoint: new NavigationEndpoint(short.videoEndpoint)
     }));
   }
-}
-
-export default AnalyticsShortsCarouselCard;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/AnalyticsVideo.ts b/src/parser/classes/analytics/AnalyticsVideo.ts
index 09b9334d..ffb8131a 100644
--- a/src/parser/classes/analytics/AnalyticsVideo.ts
+++ b/src/parser/classes/analytics/AnalyticsVideo.ts
@@ -2,7 +2,7 @@ import Thumbnail from '../misc/Thumbnail.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AnalyticsVideo extends YTNode {
+export default class AnalyticsVideo extends YTNode {
   static type = 'AnalyticsVideo';
 
   title: string;
@@ -26,6 +26,4 @@ class AnalyticsVideo extends YTNode {
       is_short: data.isShort
     };
   }
-}
-
-export default AnalyticsVideo;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/AnalyticsVodCarouselCard.ts b/src/parser/classes/analytics/AnalyticsVodCarouselCard.ts
index a77e54d7..d7836aff 100644
--- a/src/parser/classes/analytics/AnalyticsVodCarouselCard.ts
+++ b/src/parser/classes/analytics/AnalyticsVodCarouselCard.ts
@@ -2,23 +2,23 @@ import Video from './AnalyticsVideo.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AnalyticsVodCarouselCard extends YTNode {
+export default class AnalyticsVodCarouselCard extends YTNode {
   static type = 'AnalyticsVodCarouselCard';
 
   title: string;
-  videos: Video[] | null;
+  videos?: Video[];
   no_data_message?: string;
 
   constructor(data: RawNode) {
     super();
     this.title = data.title;
 
-    if (data.noDataMessage) {
+    if (Reflect.has(data, 'noDataMessage')) {
       this.no_data_message = data.noDataMessage;
     }
 
-    this.videos = data.videoCarouselData?.videos.map((video: any) => new Video(video)) || null;
+    if (Reflect.has(data.videoCarouselData, 'videos')) {
+      this.videos = data.videoCarouselData.videos.map((video: RawNode) => new Video(video));
+    }
   }
-}
-
-export default AnalyticsVodCarouselCard;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/CtaGoToCreatorStudio.ts b/src/parser/classes/analytics/CtaGoToCreatorStudio.ts
index f2378edc..648e4734 100644
--- a/src/parser/classes/analytics/CtaGoToCreatorStudio.ts
+++ b/src/parser/classes/analytics/CtaGoToCreatorStudio.ts
@@ -1,7 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CtaGoToCreatorStudio extends YTNode {
+export default class CtaGoToCreatorStudio extends YTNode {
   static type = 'CtaGoToCreatorStudio';
 
   title: string;
@@ -11,8 +11,5 @@ class CtaGoToCreatorStudio extends YTNode {
     super();
     this.title = data.buttonLabel;
     this.use_new_specs = data.useNewSpecs;
-    // Is this even useful?
   }
-}
-
-export default CtaGoToCreatorStudio;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/DataModelSection.ts b/src/parser/classes/analytics/DataModelSection.ts
index cbc71644..1e669374 100644
--- a/src/parser/classes/analytics/DataModelSection.ts
+++ b/src/parser/classes/analytics/DataModelSection.ts
@@ -1,7 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class DataModelSection extends YTNode {
+export default class DataModelSection extends YTNode {
   static type = 'DataModelSection';
 
   title: string;
@@ -68,6 +68,4 @@ class DataModelSection extends YTNode {
       }
     };
   }
-}
-
-export default DataModelSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/analytics/StatRow.ts b/src/parser/classes/analytics/StatRow.ts
index cea7e738..07d74cce 100644
--- a/src/parser/classes/analytics/StatRow.ts
+++ b/src/parser/classes/analytics/StatRow.ts
@@ -1,9 +1,8 @@
 import Text from '../misc/Text.js';
-
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class StatRow extends YTNode {
+export default class StatRow extends YTNode {
   static type = 'StatRow';
 
   title: Text;
@@ -14,6 +13,4 @@ class StatRow extends YTNode {
     this.title = new Text(data.title);
     this.contents = new Text(data.contents);
   }
-}
-
-export default StatRow;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/AuthorCommentBadge.ts b/src/parser/classes/comments/AuthorCommentBadge.ts
index 6d04a88b..867a8ccf 100644
--- a/src/parser/classes/comments/AuthorCommentBadge.ts
+++ b/src/parser/classes/comments/AuthorCommentBadge.ts
@@ -1,19 +1,22 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AuthorCommentBadge extends YTNode {
+export default class AuthorCommentBadge extends YTNode {
   static type = 'AuthorCommentBadge';
 
   #data;
 
-  icon_type: string | null;
+  icon_type?: string;
   tooltip: string;
   style?: string;
 
   constructor(data: RawNode) {
     super();
 
-    this.icon_type = data.icon?.iconType || null;
+    if (Reflect.has(data, 'icon') && Reflect.has(data.icon, 'iconType')) {
+      this.icon_type = data.icon.iconType;
+    }
+
     this.tooltip = data.iconTooltip;
 
     // *** For consistency
@@ -27,6 +30,4 @@ class AuthorCommentBadge extends YTNode {
   get orig_badge() {
     return this.#data;
   }
-}
-
-export default AuthorCommentBadge;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/Comment.ts b/src/parser/classes/comments/Comment.ts
index de0e2cf7..ab5b1540 100644
--- a/src/parser/classes/comments/Comment.ts
+++ b/src/parser/classes/comments/Comment.ts
@@ -1,24 +1,25 @@
 import Parser from '../../index.js';
 
+import Author from '../misc/Author.js';
 import Text from '../misc/Text.js';
 import Thumbnail from '../misc/Thumbnail.js';
-import CommentReplyDialog from './CommentReplyDialog.js';
-import AuthorCommentBadge from './AuthorCommentBadge.js';
-import Author from '../misc/Author.js';
 
 import Menu from '../menus/Menu.js';
+import AuthorCommentBadge from './AuthorCommentBadge.js';
 import CommentActionButtons from './CommentActionButtons.js';
-import SponsorCommentBadge from './SponsorCommentBadge.js';
+import CommentReplyDialog from './CommentReplyDialog.js';
 import PdgCommentChip from './PdgCommentChip.js';
-import type { ApiResponse } from '../../../core/Actions.js';
-import type Actions from '../../../core/Actions.js';
+import SponsorCommentBadge from './SponsorCommentBadge.js';
 
 import Proto from '../../../proto/index.js';
 import { InnertubeError } from '../../../utils/Utils.js';
-import { YTNode, SuperParsedResult } from '../../helpers.js';
+import { SuperParsedResult, YTNode } from '../../helpers.js';
+
+import type Actions from '../../../core/Actions.js';
+import type { ApiResponse } from '../../../core/Actions.js';
 import type { RawNode } from '../../index.js';
 
-class Comment extends YTNode {
+export default class Comment extends YTNode {
   static type = 'Comment';
 
   #actions?: Actions;
@@ -35,9 +36,7 @@ class Comment extends YTNode {
   action_buttons: CommentActionButtons | null;
   comment_id: string;
   vote_status: string;
-
   vote_count: string;
-
   reply_count: number;
   is_liked: boolean;
   is_disliked: boolean;
@@ -146,7 +145,7 @@ class Comment extends YTNode {
   }
 
   /**
-   * Translates the comment to the given language.
+   * Translates the comment to a given language.
    * @param target_language - Ex; en, ja
    */
   async translate(target_language: string): Promise<{
@@ -170,7 +169,7 @@ class Comment extends YTNode {
     const action = Proto.encodeCommentActionParams(22, payload);
     const response = await this.#actions.execute('comment/perform_comment_action', { action, client: 'ANDROID' });
 
-    // TODO: maybe add these to Parser#parseResponse?
+    // XXX: Should move this to Parser#parseResponse
     const mutations = response.data.frameworkUpdates?.entityBatchUpdate?.mutations;
     const content = mutations?.[0]?.payload?.commentEntityPayload?.translatedContent?.content;
 
@@ -180,6 +179,4 @@ class Comment extends YTNode {
   setActions(actions: Actions | undefined) {
     this.#actions = actions;
   }
-}
-
-export default Comment;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentActionButtons.ts b/src/parser/classes/comments/CommentActionButtons.ts
index 6727415c..615ea76c 100644
--- a/src/parser/classes/comments/CommentActionButtons.ts
+++ b/src/parser/classes/comments/CommentActionButtons.ts
@@ -2,16 +2,17 @@ import Parser from '../../index.js';
 import Button from '../Button.js';
 import ToggleButton from '../ToggleButton.js';
 import CreatorHeart from './CreatorHeart.js';
+
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CommentActionButtons extends YTNode {
+export default class CommentActionButtons extends YTNode {
   static type = 'CommentActionButtons';
 
-  like_button;
-  dislike_button;
-  reply_button;
-  creator_heart;
+  like_button: ToggleButton | null;
+  dislike_button: ToggleButton | null;
+  reply_button: Button | null;
+  creator_heart: CreatorHeart | null;
 
   constructor(data: RawNode) {
     super();
@@ -20,6 +21,4 @@ class CommentActionButtons extends YTNode {
     this.reply_button = Parser.parseItem(data.replyButton, Button);
     this.creator_heart = Parser.parseItem(data.creatorHeart, CreatorHeart);
   }
-}
-
-export default CommentActionButtons;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentDialog.ts b/src/parser/classes/comments/CommentDialog.ts
index 636127dd..c83e3a7e 100644
--- a/src/parser/classes/comments/CommentDialog.ts
+++ b/src/parser/classes/comments/CommentDialog.ts
@@ -1,12 +1,13 @@
 import Parser from '../../index.js';
+import Button from '../Button.js';
 import Text from '../misc/Text.js';
 import Thumbnail from '../misc/Thumbnail.js';
-import Button from '../Button.js';
 import EmojiPicker from './EmojiPicker.js';
+
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CommentDialog extends YTNode {
+export default class CommentDialog extends YTNode {
   static type = 'CommentDialog';
 
   editable_text: Text;
@@ -15,7 +16,7 @@ class CommentDialog extends YTNode {
   cancel_button: Button | null;
   placeholder: Text;
   emoji_button: Button | null;
-  emoji_picker: any | null;
+  emoji_picker: EmojiPicker | null;
 
   constructor(data: RawNode) {
     super();
@@ -27,6 +28,4 @@ class CommentDialog extends YTNode {
     this.emoji_button = Parser.parseItem(data.emojiButton, Button);
     this.emoji_picker = Parser.parseItem(data.emojiPicker, EmojiPicker);
   }
-}
-
-export default CommentDialog;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentReplies.ts b/src/parser/classes/comments/CommentReplies.ts
index f5078703..af20f834 100644
--- a/src/parser/classes/comments/CommentReplies.ts
+++ b/src/parser/classes/comments/CommentReplies.ts
@@ -1,12 +1,14 @@
 import Parser from '../../index.js';
-import Thumbnail from '../misc/Thumbnail.js';
 import Button from '../Button.js';
-import { YTNode } from '../../helpers.js';
+import Thumbnail from '../misc/Thumbnail.js';
+
+import { YTNode, type ObservedArray } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class CommentReplies extends YTNode {
+
+export default class CommentReplies extends YTNode {
   static type = 'CommentReplies';
 
-  contents;
+  contents: ObservedArray<YTNode>;
   view_replies: Button | null;
   hide_replies: Button | null;
   view_replies_creator_thumbnail: Thumbnail[];
@@ -20,6 +22,4 @@ class CommentReplies extends YTNode {
     this.view_replies_creator_thumbnail = Thumbnail.fromResponse(data.viewRepliesCreatorThumbnail);
     this.has_channel_owner_replied = !!data.viewRepliesCreatorThumbnail;
   }
-}
-
-export default CommentReplies;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentReplyDialog.ts b/src/parser/classes/comments/CommentReplyDialog.ts
index 9503bc6e..1faee652 100644
--- a/src/parser/classes/comments/CommentReplyDialog.ts
+++ b/src/parser/classes/comments/CommentReplyDialog.ts
@@ -1,11 +1,12 @@
 import Parser from '../../index.js';
-import Thumbnail from '../misc/Thumbnail.js';
-import Text from '../misc/Text.js';
 import Button from '../Button.js';
+import Text from '../misc/Text.js';
+import Thumbnail from '../misc/Thumbnail.js';
+
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CommentReplyDialog extends YTNode {
+export default class CommentReplyDialog extends YTNode {
   static type = 'CommentReplyDialog';
 
   reply_button: Button | null;
@@ -22,6 +23,4 @@ class CommentReplyDialog extends YTNode {
     this.placeholder = new Text(data.placeholderText);
     this.error_message = new Text(data.errorMessage);
   }
-}
-
-export default CommentReplyDialog;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentSimplebox.ts b/src/parser/classes/comments/CommentSimplebox.ts
index 70374e65..0409d53f 100644
--- a/src/parser/classes/comments/CommentSimplebox.ts
+++ b/src/parser/classes/comments/CommentSimplebox.ts
@@ -1,27 +1,26 @@
 import Parser from '../../index.js';
-import Thumbnail from '../misc/Thumbnail.js';
-import Text from '../misc/Text.js';
 import Button from '../Button.js';
+import Text from '../misc/Text.js';
+import Thumbnail from '../misc/Thumbnail.js';
+
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CommentSimplebox extends YTNode {
+export default class CommentSimplebox extends YTNode {
   static type = 'CommentSimplebox';
 
   submit_button: Button | null;
   cancel_button: Button | null;
-  author_thumbnails: Thumbnail[];
+  author_thumbnail: Thumbnail[];
   placeholder: Text;
-  avatar_size;
+  avatar_size: string;
 
   constructor(data: RawNode) {
     super();
     this.submit_button = Parser.parseItem(data.submitButton, Button);
     this.cancel_button = Parser.parseItem(data.cancelButton, Button);
-    this.author_thumbnails = Thumbnail.fromResponse(data.authorThumbnail);
+    this.author_thumbnail = Thumbnail.fromResponse(data.authorThumbnail);
     this.placeholder = new Text(data.placeholderText);
     this.avatar_size = data.avatarSize;
   }
-}
-
-export default CommentSimplebox;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentThread.ts b/src/parser/classes/comments/CommentThread.ts
index 72d64d8d..24f6196e 100644
--- a/src/parser/classes/comments/CommentThread.ts
+++ b/src/parser/classes/comments/CommentThread.ts
@@ -1,15 +1,17 @@
 import Parser from '../../index.js';
-import Comment from './Comment.js';
-import ContinuationItem from '../ContinuationItem.js';
-import CommentReplies from './CommentReplies.js';
 import Button from '../Button.js';
-import type Actions from '../../../core/Actions.js';
-import type { ObservedArray } from '../../helpers.js';
+import ContinuationItem from '../ContinuationItem.js';
+import Comment from './Comment.js';
+import CommentReplies from './CommentReplies.js';
+
 import { InnertubeError } from '../../../utils/Utils.js';
 import { observe, YTNode } from '../../helpers.js';
+
+import type Actions from '../../../core/Actions.js';
+import type { ObservedArray } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CommentThread extends YTNode {
+export default class CommentThread extends YTNode {
   static type = 'CommentThread';
 
   #actions?: Actions;
@@ -23,7 +25,7 @@ class CommentThread extends YTNode {
 
   constructor(data: RawNode) {
     super();
-    this.comment = Parser.parseItem<Comment>(data.comment, Comment);
+    this.comment = Parser.parseItem(data.comment, Comment);
     this.comment_replies_data = Parser.parseItem(data.replies, CommentReplies);
     this.is_moderated_elq_comment = data.isModeratedElqComment;
     this.has_replies = !!this.comment_replies_data;
@@ -37,7 +39,7 @@ class CommentThread extends YTNode {
       throw new InnertubeError('Actions instance not set for this thread.');
 
     if (!this.comment_replies_data)
-      throw new InnertubeError('This comment has no replies.', { comment_id: this.comment?.comment_id });
+      throw new InnertubeError('This comment has no replies.', this);
 
     const continuation = this.comment_replies_data.contents?.firstOfType(ContinuationItem);
 
@@ -87,7 +89,7 @@ class CommentThread extends YTNode {
       return comment;
     }));
 
-    this.#continuation = response.on_response_received_endpoints_memo.getType(ContinuationItem)?.[0];
+    this.#continuation = response.on_response_received_endpoints_memo.getType(ContinuationItem).first();
 
     return this;
   }
@@ -101,6 +103,4 @@ class CommentThread extends YTNode {
   setActions(actions: Actions) {
     this.#actions = actions;
   }
-}
-
-export default CommentThread;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentsEntryPointHeader.ts b/src/parser/classes/comments/CommentsEntryPointHeader.ts
index 26c30c1f..ac283d07 100644
--- a/src/parser/classes/comments/CommentsEntryPointHeader.ts
+++ b/src/parser/classes/comments/CommentsEntryPointHeader.ts
@@ -1,40 +1,44 @@
 import Text from '../misc/Text.js';
 import Thumbnail from '../misc/Thumbnail.js';
 import { YTNode } from '../../helpers.js';
-import type { RawNode } from '../../index.js';
+import { Parser, RawNode } from '../../index.js';
+import CommentsEntryPointTeaser from './CommentsEntryPointTeaser.js';
 
-class CommentsEntryPointHeader extends YTNode {
+export default class CommentsEntryPointHeader extends YTNode {
   static type = 'CommentsEntryPointHeader';
 
   header?: Text;
   comment_count?: Text;
   teaser_avatar?: Thumbnail[];
   teaser_content?: Text;
+  content_renderer?: CommentsEntryPointTeaser | null;
   simplebox_placeholder?: Text;
 
   constructor(data: RawNode) {
     super();
 
-    if (data.header) {
+    if (Reflect.has(data, 'headerText')) {
       this.header = new Text(data.headerText);
     }
 
-    if (data.commentCount) {
+    if (Reflect.has(data, 'commentCount')) {
       this.comment_count = new Text(data.commentCount);
     }
 
-    if (data.teaserAvatar || data.simpleboxAvatar) {
+    if (Reflect.has(data, 'teaserAvatar') || Reflect.has(data, 'simpleboxAvatar')) {
       this.teaser_avatar = Thumbnail.fromResponse(data.teaserAvatar || data.simpleboxAvatar);
     }
 
-    if (data.teaserContent) {
+    if (Reflect.has(data, 'teaserContent')) {
       this.teaser_content = new Text(data.teaserContent);
     }
 
-    if (data.simpleboxPlaceholder) {
+    if (Reflect.has(data, 'contentRenderer')) {
+      this.content_renderer = Parser.parseItem(data.contentRenderer, CommentsEntryPointTeaser);
+    }
+
+    if (Reflect.has(data, 'simpleboxPlaceholder')) {
       this.simplebox_placeholder = new Text(data.simpleboxPlaceholder);
     }
   }
-}
-
-export default CommentsEntryPointHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentsEntryPointTeaser.ts b/src/parser/classes/comments/CommentsEntryPointTeaser.ts
new file mode 100644
index 00000000..73b8a316
--- /dev/null
+++ b/src/parser/classes/comments/CommentsEntryPointTeaser.ts
@@ -0,0 +1,23 @@
+import Text from '../misc/Text.js';
+import Thumbnail from '../misc/Thumbnail.js';
+import { YTNode } from '../../helpers.js';
+import type { RawNode } from '../../index.js';
+
+export default class CommentsEntryPointTeaser extends YTNode {
+  static type = 'CommentsEntryPointTeaser';
+
+  teaser_avatar?: Thumbnail[];
+  teaser_content?: Text;
+
+  constructor(data: RawNode) {
+    super();
+
+    if (Reflect.has(data, 'teaserAvatar')) {
+      this.teaser_avatar = Thumbnail.fromResponse(data.teaserAvatar);
+    }
+
+    if (Reflect.has(data, 'teaserContent')) {
+      this.teaser_content = new Text(data.teaserContent);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CommentsHeader.ts b/src/parser/classes/comments/CommentsHeader.ts
index ae56eab9..e3f7ccd8 100644
--- a/src/parser/classes/comments/CommentsHeader.ts
+++ b/src/parser/classes/comments/CommentsHeader.ts
@@ -1,11 +1,12 @@
 import Parser from '../../index.js';
+import SortFilterSubMenu from '../SortFilterSubMenu.js';
 import Text from '../misc/Text.js';
 import Thumbnail from '../misc/Thumbnail.js';
-import SortFilterSubMenu from '../SortFilterSubMenu.js';
+
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class CommentsHeader extends YTNode {
+export default class CommentsHeader extends YTNode {
   static type = 'CommentsHeader';
 
   title: Text;
@@ -14,13 +15,13 @@ class CommentsHeader extends YTNode {
   create_renderer;
   sort_menu: SortFilterSubMenu | null;
 
-  custom_emojis: {
+  custom_emojis?: {
     emoji_id: string;
     shortcuts: string[];
     search_terms: string[];
     image: Thumbnail[];
     is_custom_emoji: boolean;
-  }[] | null;
+  }[];
 
   constructor(data: RawNode) {
     super();
@@ -30,14 +31,16 @@ class CommentsHeader extends YTNode {
     this.create_renderer = Parser.parseItem(data.createRenderer);
     this.sort_menu = Parser.parseItem(data.sortMenu, SortFilterSubMenu);
 
-    this.custom_emojis = data.customEmojis?.map((emoji: any) => ({
-      emoji_id: emoji.emojiId,
-      shortcuts: emoji.shortcuts,
-      search_terms: emoji.searchTerms,
-      image: Thumbnail.fromResponse(emoji.image),
-      is_custom_emoji: emoji.isCustomEmoji
-    })) || null;
+    if (Reflect.has(data, 'customEmojis')) {
+      this.custom_emojis = data.customEmojis.map((emoji: RawNode) => {
+        return {
+          emoji_id: emoji.emojiId,
+          shortcuts: emoji.shortcuts,
+          search_terms: emoji.searchTerms,
+          image: Thumbnail.fromResponse(emoji.image),
+          is_custom_emoji: emoji.isCustomEmoji
+        };
+      });
+    }
   }
-}
-
-export default CommentsHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/CreatorHeart.ts b/src/parser/classes/comments/CreatorHeart.ts
index 45302aa7..f7d88fc0 100644
--- a/src/parser/classes/comments/CreatorHeart.ts
+++ b/src/parser/classes/comments/CreatorHeart.ts
@@ -1,12 +1,12 @@
 import { YTNode } from '../../helpers.js';
-import Thumbnail from '../misc/Thumbnail.js';
 import type { RawNode } from '../../index.js';
+import Thumbnail from '../misc/Thumbnail.js';
 
-class CreatorHeart extends YTNode {
+export default class CreatorHeart extends YTNode {
   static type = 'CreatorHeart';
 
   creator_thumbnail: Thumbnail[];
-  heart_icon_type: string;
+  heart_icon_type?: string;
   heart_color: {
     basic_color_palette_data: {
       foreground_title_color: string;
@@ -20,17 +20,20 @@ class CreatorHeart extends YTNode {
   constructor(data: RawNode) {
     super();
     this.creator_thumbnail = Thumbnail.fromResponse(data.creatorThumbnail);
-    this.heart_icon_type = data.heartIcon?.iconType;
+
+    if (Reflect.has(data.heartIcon, 'iconType')) {
+      this.heart_icon_type = data.heartIcon.iconType;
+    }
+
     this.heart_color = {
       basic_color_palette_data: {
         foreground_title_color: data.heartColor?.basicColorPaletteData?.foregroundTitleColor
       }
     };
+
     this.hearted_tooltip = data.heartedTooltip;
     this.is_hearted = data.isHearted;
     this.is_enabled = data.isEnabled;
     this.kennedy_heart_color_string = data.kennedyHeartColorString;
   }
-}
-
-export default CreatorHeart;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/EmojiPicker.ts b/src/parser/classes/comments/EmojiPicker.ts
index 34f29c63..784a4374 100644
--- a/src/parser/classes/comments/EmojiPicker.ts
+++ b/src/parser/classes/comments/EmojiPicker.ts
@@ -1,14 +1,14 @@
-import Text from '../misc/Text.js';
-import { YTNode } from '../../helpers.js';
-import Parser from '../../index.js';
+import { type ObservedArray, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
+import Parser from '../../index.js';
+import Text from '../misc/Text.js';
 
-class EmojiPicker extends YTNode {
+export default class EmojiPicker extends YTNode {
   static type = 'EmojiPicker';
 
   id: string;
-  categories: any[];
-  category_buttons: any[];
+  categories: ObservedArray<YTNode>;
+  category_buttons: ObservedArray<YTNode>;
   search_placeholder: Text;
   search_no_results: Text;
   pick_skin_tone: Text;
@@ -36,6 +36,4 @@ class EmojiPicker extends YTNode {
     this.skin_tone_medium_dark_label = data.skinToneMediumDarkLabel;
     this.skin_tone_dark_label = data.skinToneDarkLabel;
   }
-}
-
-export default EmojiPicker;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/PdgCommentChip.ts b/src/parser/classes/comments/PdgCommentChip.ts
index 26f26764..1fcb45d0 100644
--- a/src/parser/classes/comments/PdgCommentChip.ts
+++ b/src/parser/classes/comments/PdgCommentChip.ts
@@ -2,15 +2,15 @@ import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class PdgCommentChip extends YTNode {
+export default class PdgCommentChip extends YTNode {
   static type = 'PdgCommentChip';
 
   text: Text;
   color_pallette: {
-    background_color: string;
-    foreground_title_color: string;
+    background_color?: string;
+    foreground_title_color?: string;
   };
-  icon_type: string;
+  icon_type?: string;
 
   constructor(data: RawNode) {
     super();
@@ -19,8 +19,9 @@ class PdgCommentChip extends YTNode {
       background_color: data.chipColorPalette?.backgroundColor,
       foreground_title_color: data.chipColorPalette?.foregroundTitleColor
     };
-    this.icon_type = data.chipIcon?.iconType;
-  }
-}
 
-export default PdgCommentChip;
\ No newline at end of file
+    if (Reflect.has(data.chipIcon, 'iconType')) {
+      this.icon_type = data.chipIcon.iconType;
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/parser/classes/comments/SponsorCommentBadge.ts b/src/parser/classes/comments/SponsorCommentBadge.ts
index 9fdc08af..c478bcca 100644
--- a/src/parser/classes/comments/SponsorCommentBadge.ts
+++ b/src/parser/classes/comments/SponsorCommentBadge.ts
@@ -2,7 +2,7 @@ import Thumbnail from '../misc/Thumbnail.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class SponsorCommentBadge extends YTNode {
+export default class SponsorCommentBadge extends YTNode {
   static type = 'SponsorCommentBadge';
 
   custom_badge: Thumbnail[];
@@ -13,6 +13,4 @@ class SponsorCommentBadge extends YTNode {
     this.custom_badge = Thumbnail.fromResponse(data.customBadge);
     this.tooltip = data.tooltip;
   }
-}
-
-export default SponsorCommentBadge;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/AddBannerToLiveChatCommand.ts b/src/parser/classes/livechat/AddBannerToLiveChatCommand.ts
index 1293811a..bb0a0d06 100644
--- a/src/parser/classes/livechat/AddBannerToLiveChatCommand.ts
+++ b/src/parser/classes/livechat/AddBannerToLiveChatCommand.ts
@@ -1,9 +1,9 @@
-import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
-import LiveChatBanner from './items/LiveChatBanner.js';
 import type { RawNode } from '../../index.js';
+import Parser from '../../index.js';
+import LiveChatBanner from './items/LiveChatBanner.js';
 
-class AddBannerToLiveChatCommand extends YTNode {
+export default class AddBannerToLiveChatCommand extends YTNode {
   static type = 'AddBannerToLiveChatCommand';
 
   banner: LiveChatBanner | null;
@@ -12,6 +12,4 @@ class AddBannerToLiveChatCommand extends YTNode {
     super();
     this.banner = Parser.parseItem(data.bannerRenderer, LiveChatBanner);
   }
-}
-
-export default AddBannerToLiveChatCommand;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/AddChatItemAction.ts b/src/parser/classes/livechat/AddChatItemAction.ts
index f0d03036..5b7168bc 100644
--- a/src/parser/classes/livechat/AddChatItemAction.ts
+++ b/src/parser/classes/livechat/AddChatItemAction.ts
@@ -2,17 +2,17 @@ import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AddChatItemAction extends YTNode {
+export default class AddChatItemAction extends YTNode {
   static type = 'AddChatItemAction';
 
-  item;
-  client_id: string | null;
+  item: YTNode;
+  client_id?: string;
 
   constructor(data: RawNode) {
     super();
     this.item = Parser.parseItem(data.item);
-    this.client_id = data.clientId || null;
+    if (Reflect.has(data, 'clientId')) {
+      this.client_id = data.clientId;
+    }
   }
-}
-
-export default AddChatItemAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/AddLiveChatTickerItemAction.ts b/src/parser/classes/livechat/AddLiveChatTickerItemAction.ts
index d7fdf418..9cd674f7 100644
--- a/src/parser/classes/livechat/AddLiveChatTickerItemAction.ts
+++ b/src/parser/classes/livechat/AddLiveChatTickerItemAction.ts
@@ -2,17 +2,15 @@ import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class AddLiveChatTickerItemAction extends YTNode {
+export default class AddLiveChatTickerItemAction extends YTNode {
   static type = 'AddLiveChatTickerItemAction';
 
-  item;
-  duration_sec: string; // TODO: check this assumption
+  item: YTNode;
+  duration_sec: string; // TODO: check this assumption.
 
   constructor(data: RawNode) {
     super();
     this.item = Parser.parseItem(data.item);
     this.duration_sec = data.durationSec;
   }
-}
-
-export default AddLiveChatTickerItemAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/DimChatItemAction.ts b/src/parser/classes/livechat/DimChatItemAction.ts
index 31646fff..44c81c9b 100644
--- a/src/parser/classes/livechat/DimChatItemAction.ts
+++ b/src/parser/classes/livechat/DimChatItemAction.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class DimChatItemAction extends YTNode {
+
+export default class DimChatItemAction extends YTNode {
   static type = 'DimChatItemAction';
 
   client_assigned_id: string;
@@ -9,6 +10,4 @@ class DimChatItemAction extends YTNode {
     super();
     this.client_assigned_id = data.clientAssignedId;
   }
-}
-
-export default DimChatItemAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/LiveChatActionPanel.ts b/src/parser/classes/livechat/LiveChatActionPanel.ts
index b8d46bf3..b738315a 100644
--- a/src/parser/classes/livechat/LiveChatActionPanel.ts
+++ b/src/parser/classes/livechat/LiveChatActionPanel.ts
@@ -1,11 +1,12 @@
 import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
+import { type SuperParsedResult, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class LiveChatActionPanel extends YTNode {
+
+export default class LiveChatActionPanel extends YTNode {
   static type = 'LiveChatActionPanel';
 
   id: string;
-  contents;
+  contents: SuperParsedResult<YTNode>;
   target_id: string;
 
   constructor(data: RawNode) {
@@ -14,6 +15,4 @@ class LiveChatActionPanel extends YTNode {
     this.contents = Parser.parse(data.contents);
     this.target_id = data.targetId;
   }
-}
-
-export default LiveChatActionPanel;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/MarkChatItemAsDeletedAction.ts b/src/parser/classes/livechat/MarkChatItemAsDeletedAction.ts
index 4ce16559..a41ad3e9 100644
--- a/src/parser/classes/livechat/MarkChatItemAsDeletedAction.ts
+++ b/src/parser/classes/livechat/MarkChatItemAsDeletedAction.ts
@@ -1,7 +1,8 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MarkChatItemAsDeletedAction extends YTNode {
+
+export default class MarkChatItemAsDeletedAction extends YTNode {
   static type = 'MarkChatItemAsDeletedAction';
 
   deleted_state_message: Text;
@@ -12,6 +13,4 @@ class MarkChatItemAsDeletedAction extends YTNode {
     this.deleted_state_message = new Text(data.deletedStateMessage);
     this.target_item_id = data.targetItemId;
   }
-}
-
-export default MarkChatItemAsDeletedAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/MarkChatItemsByAuthorAsDeletedAction.ts b/src/parser/classes/livechat/MarkChatItemsByAuthorAsDeletedAction.ts
index 8ed35ae7..3c5f26ca 100644
--- a/src/parser/classes/livechat/MarkChatItemsByAuthorAsDeletedAction.ts
+++ b/src/parser/classes/livechat/MarkChatItemsByAuthorAsDeletedAction.ts
@@ -1,17 +1,16 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MarkChatItemsByAuthorAsDeletedAction extends YTNode {
+
+export default class MarkChatItemsByAuthorAsDeletedAction extends YTNode {
   static type = 'MarkChatItemsByAuthorAsDeletedAction';
 
   deleted_state_message: Text;
-  channel_id: string;
+  external_channel_id: string;
 
   constructor(data: RawNode) {
     super();
     this.deleted_state_message = new Text(data.deletedStateMessage);
-    this.channel_id = data.externalChannelId;
+    this.external_channel_id = data.externalChannelId;
   }
-}
-
-export default MarkChatItemsByAuthorAsDeletedAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/RemoveBannerForLiveChatCommand.ts b/src/parser/classes/livechat/RemoveBannerForLiveChatCommand.ts
index 132efdff..96da001f 100644
--- a/src/parser/classes/livechat/RemoveBannerForLiveChatCommand.ts
+++ b/src/parser/classes/livechat/RemoveBannerForLiveChatCommand.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class RemoveBannerForLiveChatCommand extends YTNode {
+
+export default class RemoveBannerForLiveChatCommand extends YTNode {
   static type = 'RemoveBannerForLiveChatCommand';
 
   target_action_id: string;
@@ -9,6 +10,4 @@ class RemoveBannerForLiveChatCommand extends YTNode {
     super();
     this.target_action_id = data.targetActionId;
   }
-}
-
-export default RemoveBannerForLiveChatCommand;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/RemoveChatItemAction.ts b/src/parser/classes/livechat/RemoveChatItemAction.ts
index 43999e4c..f3c58fcc 100644
--- a/src/parser/classes/livechat/RemoveChatItemAction.ts
+++ b/src/parser/classes/livechat/RemoveChatItemAction.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class RemoveChatItemAction extends YTNode {
+
+export default class RemoveChatItemAction extends YTNode {
   static type = 'RemoveChatItemAction';
 
   target_item_id: string;
@@ -9,6 +10,4 @@ class RemoveChatItemAction extends YTNode {
     super();
     this.target_item_id = data.targetItemId;
   }
-}
-
-export default RemoveChatItemAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/RemoveChatItemByAuthorAction.ts b/src/parser/classes/livechat/RemoveChatItemByAuthorAction.ts
index aab9ad17..aa848a1f 100644
--- a/src/parser/classes/livechat/RemoveChatItemByAuthorAction.ts
+++ b/src/parser/classes/livechat/RemoveChatItemByAuthorAction.ts
@@ -1,6 +1,7 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class RemoveChatItemByAuthorAction extends YTNode {
+
+export default class RemoveChatItemByAuthorAction extends YTNode {
   static type = 'RemoveChatItemByAuthorAction';
 
   external_channel_id: string;
@@ -9,6 +10,4 @@ class RemoveChatItemByAuthorAction extends YTNode {
     super();
     this.external_channel_id = data.externalChannelId;
   }
-}
-
-export default RemoveChatItemByAuthorAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/ReplaceChatItemAction.ts b/src/parser/classes/livechat/ReplaceChatItemAction.ts
index 725d21cd..ffde7856 100644
--- a/src/parser/classes/livechat/ReplaceChatItemAction.ts
+++ b/src/parser/classes/livechat/ReplaceChatItemAction.ts
@@ -1,17 +1,16 @@
 import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class ReplaceChatItemAction extends YTNode {
+
+export default class ReplaceChatItemAction extends YTNode {
   static type = 'ReplaceChatItemAction';
 
   target_item_id: string;
-  replacement_item;
+  replacement_item: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.target_item_id = data.targetItemId;
     this.replacement_item = Parser.parseItem(data.replacementItem);
   }
-}
-
-export default ReplaceChatItemAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/ReplayChatItemAction.ts b/src/parser/classes/livechat/ReplayChatItemAction.ts
index de3d9d5c..9be828ce 100644
--- a/src/parser/classes/livechat/ReplayChatItemAction.ts
+++ b/src/parser/classes/livechat/ReplayChatItemAction.ts
@@ -1,20 +1,20 @@
 import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
+import { type ObservedArray, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class ReplayChatItemAction extends YTNode {
+
+export default class ReplayChatItemAction extends YTNode {
   static type = 'ReplayChatItemAction';
 
-  actions;
-  video_offset_time_msec: string; // Or number?
+  actions: ObservedArray<YTNode>;
+  video_offset_time_msec: string;
 
   constructor(data: RawNode) {
     super();
-    this.actions = Parser.parseArray(data.actions?.map((action: any) => {
+    this.actions = Parser.parseArray(data.actions?.map((action: RawNode) => {
       delete action.clickTrackingParams;
       return action;
     }));
+
     this.video_offset_time_msec = data.videoOffsetTimeMsec;
   }
-}
-
-export default ReplayChatItemAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/ShowLiveChatActionPanelAction.ts b/src/parser/classes/livechat/ShowLiveChatActionPanelAction.ts
index 66928db6..a2a13b98 100644
--- a/src/parser/classes/livechat/ShowLiveChatActionPanelAction.ts
+++ b/src/parser/classes/livechat/ShowLiveChatActionPanelAction.ts
@@ -1,16 +1,15 @@
 import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
 import LiveChatActionPanel from './LiveChatActionPanel.js';
+import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class ShowLiveChatActionPanelAction extends YTNode {
+
+export default class ShowLiveChatActionPanelAction extends YTNode {
   static type = 'ShowLiveChatActionPanelAction';
 
   panel_to_show: LiveChatActionPanel | null;
 
   constructor(data: RawNode) {
     super();
-    this.panel_to_show = Parser.parseItem<LiveChatActionPanel>(data.panelToShow, LiveChatActionPanel);
+    this.panel_to_show = Parser.parseItem(data.panelToShow, LiveChatActionPanel);
   }
-}
-
-export default ShowLiveChatActionPanelAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/ShowLiveChatDialogAction.ts b/src/parser/classes/livechat/ShowLiveChatDialogAction.ts
index 32c4c7fe..341c851a 100644
--- a/src/parser/classes/livechat/ShowLiveChatDialogAction.ts
+++ b/src/parser/classes/livechat/ShowLiveChatDialogAction.ts
@@ -1,15 +1,14 @@
 import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class ShowLiveChatDialogAction extends YTNode {
+
+export default class ShowLiveChatDialogAction extends YTNode {
   static type = 'ShowLiveChatDialogAction';
 
-  dialog;
+  dialog: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.dialog = Parser.parseItem(data.dialog);
   }
-}
-
-export default ShowLiveChatDialogAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/ShowLiveChatTooltipCommand.ts b/src/parser/classes/livechat/ShowLiveChatTooltipCommand.ts
index 9673fdc9..c53ca463 100644
--- a/src/parser/classes/livechat/ShowLiveChatTooltipCommand.ts
+++ b/src/parser/classes/livechat/ShowLiveChatTooltipCommand.ts
@@ -1,15 +1,14 @@
 import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class ShowLiveChatTooltipCommand extends YTNode {
+
+export default class ShowLiveChatTooltipCommand extends YTNode {
   static type = 'ShowLiveChatTooltipCommand';
 
-  tooltip;
+  tooltip: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.tooltip = Parser.parseItem(data.tooltip);
   }
-}
-
-export default ShowLiveChatTooltipCommand;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/UpdateDateTextAction.ts b/src/parser/classes/livechat/UpdateDateTextAction.ts
index 1861ae14..b0826da5 100644
--- a/src/parser/classes/livechat/UpdateDateTextAction.ts
+++ b/src/parser/classes/livechat/UpdateDateTextAction.ts
@@ -1,7 +1,8 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class UpdateDateTextAction extends YTNode {
+
+export default class UpdateDateTextAction extends YTNode {
   static type = 'UpdateDateTextAction';
 
   date_text: string;
@@ -10,6 +11,4 @@ class UpdateDateTextAction extends YTNode {
     super();
     this.date_text = new Text(data.dateText).toString();
   }
-}
-
-export default UpdateDateTextAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/UpdateDescriptionAction.ts b/src/parser/classes/livechat/UpdateDescriptionAction.ts
index cf91b470..1b25f8f2 100644
--- a/src/parser/classes/livechat/UpdateDescriptionAction.ts
+++ b/src/parser/classes/livechat/UpdateDescriptionAction.ts
@@ -1,7 +1,8 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class UpdateDescriptionAction extends YTNode {
+
+export default class UpdateDescriptionAction extends YTNode {
   static type = 'UpdateDescriptionAction';
 
   description: Text;
@@ -10,6 +11,4 @@ class UpdateDescriptionAction extends YTNode {
     super();
     this.description = new Text(data.description);
   }
-}
-
-export default UpdateDescriptionAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/UpdateLiveChatPollAction.ts b/src/parser/classes/livechat/UpdateLiveChatPollAction.ts
index ad3ca001..4cac8e5f 100644
--- a/src/parser/classes/livechat/UpdateLiveChatPollAction.ts
+++ b/src/parser/classes/livechat/UpdateLiveChatPollAction.ts
@@ -1,15 +1,14 @@
 import Parser from '../../index.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class UpdateLiveChatPollAction extends YTNode {
+
+export default class UpdateLiveChatPollAction extends YTNode {
   static type = 'UpdateLiveChatPollAction';
 
-  poll_to_update;
+  poll_to_update: YTNode;
 
   constructor(data: RawNode) {
     super();
     this.poll_to_update = Parser.parseItem(data.pollToUpdate);
   }
-}
-
-export default UpdateLiveChatPollAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/UpdateTitleAction.ts b/src/parser/classes/livechat/UpdateTitleAction.ts
index 1d3ef76a..f43611a7 100644
--- a/src/parser/classes/livechat/UpdateTitleAction.ts
+++ b/src/parser/classes/livechat/UpdateTitleAction.ts
@@ -1,7 +1,8 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class UpdateTitleAction extends YTNode {
+
+export default class UpdateTitleAction extends YTNode {
   static type = 'UpdateTitleAction';
 
   title: Text;
@@ -10,6 +11,4 @@ class UpdateTitleAction extends YTNode {
     super();
     this.title = new Text(data.title);
   }
-}
-
-export default UpdateTitleAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/UpdateViewershipAction.ts b/src/parser/classes/livechat/UpdateViewershipAction.ts
index e19a19fb..ed7b280e 100644
--- a/src/parser/classes/livechat/UpdateViewershipAction.ts
+++ b/src/parser/classes/livechat/UpdateViewershipAction.ts
@@ -1,7 +1,8 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class UpdateViewershipAction extends YTNode {
+
+export default class UpdateViewershipAction extends YTNode {
   static type = 'UpdateViewershipAction';
 
   view_count: Text;
@@ -15,6 +16,4 @@ class UpdateViewershipAction extends YTNode {
     this.extra_short_view_count = new Text(view_count_renderer.extraShortViewCount);
     this.is_live = view_count_renderer.isLive;
   }
-}
-
-export default UpdateViewershipAction;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatAutoModMessage.ts b/src/parser/classes/livechat/items/LiveChatAutoModMessage.ts
index 3b452fe4..f29d333d 100644
--- a/src/parser/classes/livechat/items/LiveChatAutoModMessage.ts
+++ b/src/parser/classes/livechat/items/LiveChatAutoModMessage.ts
@@ -1,30 +1,28 @@
-import { ObservedArray, YTNode } from '../../../helpers.js';
 import Parser from '../../../index.js';
 import Button from '../../Button.js';
-import Text from '../../misc/Text.js';
 import NavigationEndpoint from '../../NavigationEndpoint.js';
+import Text from '../../misc/Text.js';
+
+import { YTNode, type ObservedArray } from '../../../helpers.js';
 import type { RawNode } from '../../../index.js';
 
-class LiveChatAutoModMessage extends YTNode {
+export default class LiveChatAutoModMessage extends YTNode {
   static type = 'LiveChatAutoModMessage';
 
-  auto_moderated_item;
-  header_text: Text;
-
   menu_endpoint?: NavigationEndpoint;
   moderation_buttons: ObservedArray<Button>;
+  auto_moderated_item: YTNode;
+  header_text: Text;
   timestamp: number;
   id: string;
 
   constructor(data: RawNode) {
     super();
     this.menu_endpoint = new NavigationEndpoint(data.contextMenuEndpoint);
-    this.moderation_buttons = Parser.parseArray(data.moderationButtons, [ Button ]);
+    this.moderation_buttons = Parser.parseArray(data.moderationButtons, Button);
     this.auto_moderated_item = Parser.parseItem(data.autoModeratedItem);
     this.header_text = new Text(data.headerText);
     this.timestamp = Math.floor(parseInt(data.timestampUsec) / 1000);
     this.id = data.id;
   }
-}
-
-export default LiveChatAutoModMessage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatBanner.ts b/src/parser/classes/livechat/items/LiveChatBanner.ts
index fb0ff717..fb35a7ee 100644
--- a/src/parser/classes/livechat/items/LiveChatBanner.ts
+++ b/src/parser/classes/livechat/items/LiveChatBanner.ts
@@ -1,13 +1,13 @@
 import { YTNode } from '../../../helpers.js';
+import type { RawNode } from '../../../index.js';
 import Parser from '../../../index.js';
 import LiveChatBannerHeader from './LiveChatBannerHeader.js';
-import type { RawNode } from '../../../index.js';
 
-class LiveChatBanner extends YTNode {
+export default class LiveChatBanner extends YTNode {
   static type = 'LiveChatBanner';
 
   header: LiveChatBannerHeader | null;
-  contents;
+  contents: YTNode;
   action_id: string;
   viewer_is_creator: boolean;
   target_id: string;
@@ -24,6 +24,4 @@ class LiveChatBanner extends YTNode {
     this.is_stackable = data.isStackable;
     this.background_type = data.backgroundType;
   }
-}
-
-export default LiveChatBanner;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatBannerHeader.ts b/src/parser/classes/livechat/items/LiveChatBannerHeader.ts
index b64c604b..439afb0f 100644
--- a/src/parser/classes/livechat/items/LiveChatBannerHeader.ts
+++ b/src/parser/classes/livechat/items/LiveChatBannerHeader.ts
@@ -1,22 +1,24 @@
 import { YTNode } from '../../../helpers.js';
+import type { RawNode } from '../../../index.js';
 import Parser from '../../../index.js';
 import Button from '../../Button.js';
 import Text from '../../misc/Text.js';
-import type { RawNode } from '../../../index.js';
 
-class LiveChatBannerHeader extends YTNode {
+export default class LiveChatBannerHeader extends YTNode {
   static type = 'LiveChatBannerHeader';
 
-  text: string;
-  icon_type: string;
+  text: Text;
+  icon_type?: string;
   context_menu_button: Button | null;
 
   constructor(data: RawNode) {
     super();
-    this.text = new Text(data.text).toString();
-    this.icon_type = data.icon?.iconType;
+    this.text = new Text(data.text);
+
+    if (Reflect.has(data, 'icon') && Reflect.has(data.icon, 'iconType')) {
+      this.icon_type = data.icon.iconType;
+    }
+
     this.context_menu_button = Parser.parseItem(data.contextMenuButton, Button);
   }
-}
-
-export default LiveChatBannerHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatBannerPoll.ts b/src/parser/classes/livechat/items/LiveChatBannerPoll.ts
index 9df88c9e..ea0bf8d0 100644
--- a/src/parser/classes/livechat/items/LiveChatBannerPoll.ts
+++ b/src/parser/classes/livechat/items/LiveChatBannerPoll.ts
@@ -1,13 +1,16 @@
 import { YTNode } from '../../../helpers.js';
+import type { RawNode } from '../../../index.js';
 import Parser from '../../../index.js';
+import Button from '../../Button.js';
 import Text from '../../misc/Text.js';
 import Thumbnail from '../../misc/Thumbnail.js';
-import type { RawNode } from '../../../index.js';
-class LiveChatBannerPoll extends YTNode {
+
+export default class LiveChatBannerPoll extends YTNode {
   static type = 'LiveChatBannerPoll';
 
   poll_question: Text;
   author_photo: Thumbnail[];
+
   choices: {
     option_id: string;
     text: string;
@@ -15,22 +18,20 @@ class LiveChatBannerPoll extends YTNode {
 
   collapsed_state_entity_key: string;
   live_chat_poll_state_entity_key: string;
-  context_menu_button;
+  context_menu_button: Button | null;
 
   constructor(data: RawNode) {
     super();
     this.poll_question = new Text(data.pollQuestion);
     this.author_photo = Thumbnail.fromResponse(data.authorPhoto);
 
-    this.choices = data.pollChoices.map((choice: any) => ({
+    this.choices = data.pollChoices.map((choice: RawNode) => ({
       option_id: choice.pollOptionId,
-      text: new Text(choice.text).toString()
+      text: new Text(choice.text).toString() // XXX: This toString should probably not be used here.
     }));
 
     this.collapsed_state_entity_key = data.collapsedStateEntityKey;
     this.live_chat_poll_state_entity_key = data.liveChatPollStateEntityKey;
-    this.context_menu_button = Parser.parseItem(data.contextMenuButton);
+    this.context_menu_button = Parser.parseItem(data.contextMenuButton, Button);
   }
-}
-
-export default LiveChatBannerPoll;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatMembershipItem.ts b/src/parser/classes/livechat/items/LiveChatMembershipItem.ts
index c3d76222..4dd072c0 100644
--- a/src/parser/classes/livechat/items/LiveChatMembershipItem.ts
+++ b/src/parser/classes/livechat/items/LiveChatMembershipItem.ts
@@ -1,17 +1,16 @@
 import { YTNode } from '../../../helpers.js';
-import Text from '../../misc/Text.js';
-import NavigationEndpoint from '../../NavigationEndpoint.js';
 import type { RawNode } from '../../../index.js';
+import NavigationEndpoint from '../../NavigationEndpoint.js';
 import Author from '../../misc/Author.js';
-class LiveChatMembershipItem extends YTNode {
+import Text from '../../misc/Text.js';
+
+export default class LiveChatMembershipItem extends YTNode {
   static type = 'LiveChatMembershipItem';
 
   id: string;
   timestamp: number;
   header_subtext: Text;
-
   author: Author;
-
   menu_endpoint: NavigationEndpoint;
 
   constructor(data: RawNode) {
@@ -19,11 +18,7 @@ class LiveChatMembershipItem extends YTNode {
     this.id = data.id;
     this.timestamp = Math.floor(parseInt(data.timestampUsec) / 1000);
     this.header_subtext = new Text(data.headerSubtext);
-
     this.author = new Author(data.authorName, data.authorBadges, data.authorPhoto, data.authorExternalChannelId);
-
     this.menu_endpoint = new NavigationEndpoint(data.contextMenuEndpoint);
   }
-}
-
-export default LiveChatMembershipItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatPaidMessage.ts b/src/parser/classes/livechat/items/LiveChatPaidMessage.ts
index a2ebe032..f5729a95 100644
--- a/src/parser/classes/livechat/items/LiveChatPaidMessage.ts
+++ b/src/parser/classes/livechat/items/LiveChatPaidMessage.ts
@@ -1,16 +1,14 @@
 import { YTNode } from '../../../helpers.js';
-import Text from '../../misc/Text.js';
-import NavigationEndpoint from '../../NavigationEndpoint.js';
 import type { RawNode } from '../../../index.js';
+import NavigationEndpoint from '../../NavigationEndpoint.js';
 import Author from '../../misc/Author.js';
+import Text from '../../misc/Text.js';
 
-class LiveChatPaidMessage extends YTNode {
+export default class LiveChatPaidMessage extends YTNode {
   static type = 'LiveChatPaidMessage';
 
   message: Text;
-
   author: Author;
-
   header_background_color: number;
   header_text_color: number;
   body_background_color: number;
@@ -25,7 +23,12 @@ class LiveChatPaidMessage extends YTNode {
     super();
     this.message = new Text(data.message);
 
-    this.author = new Author(data.authorName, data.authorBadges, data.authorPhoto, data.authorExternalChannelId);
+    this.author = new Author(
+      data.authorName,
+      data.authorBadges,
+      data.authorPhoto,
+      data.authorExternalChannelId
+    );
 
     this.header_background_color = data.headerBackgroundColor;
     this.header_text_color = data.headerTextColor;
@@ -37,6 +40,4 @@ class LiveChatPaidMessage extends YTNode {
     this.timestamp_text = new Text(data.timestampText).toString();
     this.id = data.id;
   }
-}
-
-export default LiveChatPaidMessage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatPaidSticker.ts b/src/parser/classes/livechat/items/LiveChatPaidSticker.ts
index 84086a78..7b1fe527 100644
--- a/src/parser/classes/livechat/items/LiveChatPaidSticker.ts
+++ b/src/parser/classes/livechat/items/LiveChatPaidSticker.ts
@@ -1,17 +1,15 @@
 import { YTNode } from '../../../helpers.js';
+import type { RawNode } from '../../../index.js';
+import NavigationEndpoint from '../../NavigationEndpoint.js';
+import Author from '../../misc/Author.js';
 import Text from '../../misc/Text.js';
 import Thumbnail from '../../misc/Thumbnail.js';
-import NavigationEndpoint from '../../NavigationEndpoint.js';
-import type { RawNode } from '../../../index.js';
-import Author from '../../misc/Author.js';
 
-class LiveChatPaidSticker extends YTNode {
+export default class LiveChatPaidSticker extends YTNode {
   static type = 'LiveChatPaidSticker';
 
   id: string;
-
   author: Author;
-
   money_chip_background_color: number;
   money_chip_text_color: number;
   background_color: number;
@@ -19,14 +17,19 @@ class LiveChatPaidSticker extends YTNode {
   sticker: Thumbnail[];
   purchase_amount: string;
   context_menu: NavigationEndpoint;
-  menu_endpoint?: NavigationEndpoint;
+  menu_endpoint: NavigationEndpoint;
   timestamp: number;
 
   constructor(data: RawNode) {
     super();
     this.id = data.id;
 
-    this.author = new Author(data.authorName, data.authorBadges, data.authorPhoto, data.authorExternalChannelId);
+    this.author = new Author(
+      data.authorName,
+      data.authorBadges,
+      data.authorPhoto,
+      data.authorExternalChannelId
+    );
 
     this.money_chip_background_color = data.moneyChipBackgroundColor;
     this.money_chip_text_color = data.moneyChipTextColor;
@@ -38,6 +41,4 @@ class LiveChatPaidSticker extends YTNode {
     this.context_menu = this.menu_endpoint;
     this.timestamp = Math.floor(parseInt(data.timestampUsec) / 1000);
   }
-}
-
-export default LiveChatPaidSticker;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatPlaceholderItem.ts b/src/parser/classes/livechat/items/LiveChatPlaceholderItem.ts
index 54472fc9..04a935b9 100644
--- a/src/parser/classes/livechat/items/LiveChatPlaceholderItem.ts
+++ b/src/parser/classes/livechat/items/LiveChatPlaceholderItem.ts
@@ -1,7 +1,7 @@
 import { YTNode } from '../../../helpers.js';
 import type { RawNode } from '../../../index.js';
 
-class LiveChatPlaceholderItem extends YTNode {
+export default class LiveChatPlaceholderItem extends YTNode {
   static type = 'LiveChatPlaceholderItem';
 
   id: string;
@@ -12,6 +12,4 @@ class LiveChatPlaceholderItem extends YTNode {
     this.id = data.id;
     this.timestamp = Math.floor(parseInt(data.timestampUsec) / 1000);
   }
-}
-
-export default LiveChatPlaceholderItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatProductItem.ts b/src/parser/classes/livechat/items/LiveChatProductItem.ts
index 9dc83feb..1092d892 100644
--- a/src/parser/classes/livechat/items/LiveChatProductItem.ts
+++ b/src/parser/classes/livechat/items/LiveChatProductItem.ts
@@ -6,7 +6,7 @@ import Text from '../../misc/Text.js';
 import Thumbnail from '../../misc/Thumbnail.js';
 import NavigationEndpoint from '../../NavigationEndpoint.js';
 
-class LiveChatProductItem extends YTNode {
+export default class LiveChatProductItem extends YTNode {
   static type = 'LiveChatProductItem';
 
   title: string;
@@ -15,18 +15,17 @@ class LiveChatProductItem extends YTNode {
   price: string;
   vendor_name: string;
   from_vendor_text: string;
-  information_button;
+  information_button: YTNode;
   endpoint: NavigationEndpoint;
   creator_message: string;
   creator_name: string;
   author_photo: Thumbnail[];
-  information_dialog;
+  information_dialog: YTNode;
   is_verified: boolean;
   creator_custom_message: Text;
 
   constructor(data: RawNode) {
     super();
-
     this.title = data.title;
     this.accessibility_title = data.accessibilityTitle;
     this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
@@ -42,6 +41,4 @@ class LiveChatProductItem extends YTNode {
     this.is_verified = data.isVerified;
     this.creator_custom_message = new Text(data.creatorCustomMessage);
   }
-}
-
-export default LiveChatProductItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatRestrictedParticipation.ts b/src/parser/classes/livechat/items/LiveChatRestrictedParticipation.ts
index faa4e5c3..91ec975e 100644
--- a/src/parser/classes/livechat/items/LiveChatRestrictedParticipation.ts
+++ b/src/parser/classes/livechat/items/LiveChatRestrictedParticipation.ts
@@ -2,16 +2,18 @@ import { YTNode } from '../../../helpers.js';
 import Text from '../../misc/Text.js';
 import type { RawNode } from '../../../index.js';
 
-class LiveChatRestrictedParticipation extends YTNode {
+export default class LiveChatRestrictedParticipation extends YTNode {
+  static type = 'LiveChatRestrictedParticipation';
+
   message: Text;
   icon_type?: string;
 
   constructor(data: RawNode) {
     super();
     this.message = new Text(data.message);
-    this.icon_type = data?.icon?.iconType;
+    if (Reflect.has(data, 'icon') && Reflect.has(data.icon, 'iconType')) {
+      this.icon_type = data.icon.iconType;
+    }
     // TODO: parse onClickCommand
   }
-}
-
-export default LiveChatRestrictedParticipation;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatTextMessage.ts b/src/parser/classes/livechat/items/LiveChatTextMessage.ts
index 4caa59f5..b326a4cf 100644
--- a/src/parser/classes/livechat/items/LiveChatTextMessage.ts
+++ b/src/parser/classes/livechat/items/LiveChatTextMessage.ts
@@ -1,16 +1,15 @@
-import { ObservedArray, YTNode } from '../../../helpers.js';
+import { type ObservedArray, YTNode } from '../../../helpers.js';
+import type { RawNode } from '../../../index.js';
 import Parser from '../../../index.js';
 import Button from '../../Button.js';
-import Text from '../../misc/Text.js';
 import NavigationEndpoint from '../../NavigationEndpoint.js';
-import type { RawNode } from '../../../index.js';
 import Author from '../../misc/Author.js';
+import Text from '../../misc/Text.js';
 
 export class LiveChatMessageBase extends YTNode {
   static type = 'LiveChatMessageBase';
 
   message: Text;
-
   inline_action_buttons: ObservedArray<Button>;
   timestamp: number;
   id: string;
@@ -18,27 +17,28 @@ export class LiveChatMessageBase extends YTNode {
   constructor(data: RawNode) {
     super();
     this.message = new Text(data.message);
-
-    this.inline_action_buttons = Parser.parseArray(data.inlineActionButtons, [ Button ]);
+    this.inline_action_buttons = Parser.parseArray(data.inlineActionButtons, Button);
     this.timestamp = Math.floor(parseInt(data.timestampUsec) / 1000);
     this.id = data.id;
   }
 }
 
-class LiveChatTextMessage extends LiveChatMessageBase {
+export default class LiveChatTextMessage extends LiveChatMessageBase {
   static type = 'LiveChatTextMessage';
 
   author: Author;
-
-  menu_endpoint?: NavigationEndpoint;
+  menu_endpoint: NavigationEndpoint;
 
   constructor(data: RawNode) {
     super(data);
 
-    this.author = new Author(data.authorName, data.authorBadges, data.authorPhoto, data.authorExternalChannelId);
+    this.author = new Author(
+      data.authorName,
+      data.authorBadges,
+      data.authorPhoto,
+      data.authorExternalChannelId
+    );
 
     this.menu_endpoint = new NavigationEndpoint(data.contextMenuEndpoint);
   }
-}
-
-export default LiveChatTextMessage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatTickerPaidMessageItem.ts b/src/parser/classes/livechat/items/LiveChatTickerPaidMessageItem.ts
index d0e01eeb..6801744b 100644
--- a/src/parser/classes/livechat/items/LiveChatTickerPaidMessageItem.ts
+++ b/src/parser/classes/livechat/items/LiveChatTickerPaidMessageItem.ts
@@ -1,27 +1,30 @@
+import Author from '../../misc/Author.js';
 import Parser from '../../../index.js';
-import Text from '../../misc/Text.js';
 import NavigationEndpoint from '../../NavigationEndpoint.js';
-import type { RawNode } from '../../../index.js';
+import Text from '../../misc/Text.js';
 
 import { YTNode } from '../../../helpers.js';
-import Author from '../../misc/Author.js';
+import type { RawNode } from '../../../index.js';
 
-class LiveChatTickerPaidMessageItem extends YTNode {
+export default class LiveChatTickerPaidMessageItem extends YTNode {
   static type = 'LiveChatTickerPaidMessageItem';
 
   author: Author;
-
   amount: Text;
-  duration_sec: string; // Or number?
+  duration_sec: string;
   full_duration_sec: string;
-  show_item;
+  show_item: YTNode;
   show_item_endpoint: NavigationEndpoint;
   id: string;
 
   constructor(data: RawNode) {
     super();
-
-    this.author = new Author(data.authorName, data.authorBadges, data.authorPhoto, data.authorExternalChannelId);
+    this.author = new Author(
+      data.authorName,
+      data.authorBadges,
+      data.authorPhoto,
+      data.authorExternalChannelId
+    );
 
     this.amount = new Text(data.amount);
     this.duration_sec = data.durationSec;
@@ -30,6 +33,4 @@ class LiveChatTickerPaidMessageItem extends YTNode {
     this.show_item_endpoint = new NavigationEndpoint(data.showItemEndpoint);
     this.id = data.id;
   }
-}
-
-export default LiveChatTickerPaidMessageItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatTickerPaidStickerItem.ts b/src/parser/classes/livechat/items/LiveChatTickerPaidStickerItem.ts
index a3f92283..008a106e 100644
--- a/src/parser/classes/livechat/items/LiveChatTickerPaidStickerItem.ts
+++ b/src/parser/classes/livechat/items/LiveChatTickerPaidStickerItem.ts
@@ -1,7 +1,5 @@
 import LiveChatTickerPaidMessageItem from './LiveChatTickerPaidMessageItem.js';
 
-class LiveChatTickerPaidStickerItem extends LiveChatTickerPaidMessageItem {
+export default class LiveChatTickerPaidStickerItem extends LiveChatTickerPaidMessageItem {
   static type = 'LiveChatTickerPaidStickerItem';
-}
-
-export default LiveChatTickerPaidStickerItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatTickerSponsorItem.ts b/src/parser/classes/livechat/items/LiveChatTickerSponsorItem.ts
index c9b14df1..a46b89f4 100644
--- a/src/parser/classes/livechat/items/LiveChatTickerSponsorItem.ts
+++ b/src/parser/classes/livechat/items/LiveChatTickerSponsorItem.ts
@@ -1,27 +1,27 @@
 import { YTNode } from '../../../helpers.js';
-import Text from '../../misc/Text.js';
 import type { RawNode } from '../../../index.js';
 import Author from '../../misc/Author.js';
+import Text from '../../misc/Text.js';
 
-class LiveChatTickerSponsorItem extends YTNode {
+export default class LiveChatTickerSponsorItem extends YTNode {
   static type = 'LiveChatTickerSponsorItem';
 
   id: string;
   detail: Text;
   author: Author;
-
   duration_sec: string;
 
   constructor(data: RawNode) {
     super();
     this.id = data.id;
     this.detail = new Text(data.detailText);
-
-    this.author = new Author(data.authorName, data.authorBadges, data.sponsorPhoto, data.authorExternalChannelId);
-
+    this.author = new Author(
+      data.authorName,
+      data.authorBadges,
+      data.sponsorPhoto,
+      data.authorExternalChannelId
+    );
     this.duration_sec = data.durationSec;
-    // TODO: finish this
+    // TODO: Parse remaining props.
   }
-}
-
-export default LiveChatTickerSponsorItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/LiveChatViewerEngagementMessage.ts b/src/parser/classes/livechat/items/LiveChatViewerEngagementMessage.ts
index 09167f3c..c2e2e030 100644
--- a/src/parser/classes/livechat/items/LiveChatViewerEngagementMessage.ts
+++ b/src/parser/classes/livechat/items/LiveChatViewerEngagementMessage.ts
@@ -1,19 +1,19 @@
 import Parser from '../../../index.js';
 import { LiveChatMessageBase } from './LiveChatTextMessage.js';
 import type { RawNode } from '../../../index.js';
+import type { YTNode } from '../../../helpers.js';
 
-
-class LiveChatViewerEngagementMessage extends LiveChatMessageBase {
+export default class LiveChatViewerEngagementMessage extends LiveChatMessageBase {
   static type = 'LiveChatViewerEngagementMessage';
 
-  icon_type: string;
-  action_button;
+  icon_type?: string;
+  action_button: YTNode;
 
   constructor(data: RawNode) {
     super(data);
-    this.icon_type = data.icon.iconType;
+    if (Reflect.has(data, 'icon') && Reflect.has(data.icon, 'iconType')) {
+      this.icon_type = data.icon.iconType;
+    }
     this.action_button = Parser.parseItem(data.actionButton);
   }
-}
-
-export default LiveChatViewerEngagementMessage;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/livechat/items/PollHeader.ts b/src/parser/classes/livechat/items/PollHeader.ts
index 95ffd867..9c7b8641 100644
--- a/src/parser/classes/livechat/items/PollHeader.ts
+++ b/src/parser/classes/livechat/items/PollHeader.ts
@@ -1,17 +1,18 @@
+import { YTNode } from '../../../helpers.js';
+import type { RawNode } from '../../../index.js';
+import Parser from '../../../index.js';
+import Button from '../../Button.js';
 import Text from '../../misc/Text.js';
 import Thumbnail from '../../misc/Thumbnail.js';
-import Parser from '../../../index.js';
-import type { RawNode } from '../../../index.js';
-import { YTNode } from '../../../helpers.js';
 
-class PollHeader extends YTNode {
+export default class PollHeader extends YTNode {
   static type = 'PollHeader';
 
   poll_question: Text;
   thumbnails: Thumbnail[];
   metadata: Text;
   live_chat_poll_type: string;
-  context_menu_button;
+  context_menu_button: Button | null;
 
   constructor(data: RawNode) {
     super();
@@ -19,8 +20,6 @@ class PollHeader extends YTNode {
     this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
     this.metadata = new Text(data.metadataText);
     this.live_chat_poll_type = data.liveChatPollType;
-    this.context_menu_button = Parser.parseItem(data.contextMenuButton);
+    this.context_menu_button = Parser.parseItem(data.contextMenuButton, Button);
   }
-}
-
-export default PollHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/Menu.ts b/src/parser/classes/menus/Menu.ts
index 0dc829c5..1c980b9d 100644
--- a/src/parser/classes/menus/Menu.ts
+++ b/src/parser/classes/menus/Menu.ts
@@ -1,24 +1,26 @@
 import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
+import { ObservedArray, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class Menu extends YTNode {
+
+export default class Menu extends YTNode {
   static type = 'Menu';
 
-  items;
-  top_level_buttons;
-  label;
+  items: ObservedArray<YTNode>;
+  top_level_buttons: ObservedArray<YTNode>;
+  label?: string;
 
   constructor(data: RawNode) {
     super();
     this.items = Parser.parseArray(data.items);
     this.top_level_buttons = Parser.parseArray(data.topLevelButtons);
-    this.label = data.accessibility?.accessibilityData?.label || null;
+
+    if (Reflect.has(data, 'accessibility') && Reflect.has(data.accessibility, 'accessibilityData')) {
+      this.label = data.accessibility.accessibilityData.label;
+    }
   }
 
   // XXX: alias for consistency
   get contents() {
     return this.items;
   }
-}
-
-export default Menu;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MenuNavigationItem.ts b/src/parser/classes/menus/MenuNavigationItem.ts
index 0d037e47..b5666135 100644
--- a/src/parser/classes/menus/MenuNavigationItem.ts
+++ b/src/parser/classes/menus/MenuNavigationItem.ts
@@ -1,12 +1,10 @@
 import Button from '../Button.js';
 import type { RawNode } from '../../index.js';
 
-class MenuNavigationItem extends Button {
+export default class MenuNavigationItem extends Button {
   static type = 'MenuNavigationItem';
 
   constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default MenuNavigationItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MenuServiceItem.ts b/src/parser/classes/menus/MenuServiceItem.ts
index 3a8ba1f6..c207d0a1 100644
--- a/src/parser/classes/menus/MenuServiceItem.ts
+++ b/src/parser/classes/menus/MenuServiceItem.ts
@@ -1,11 +1,10 @@
 import Button from '../Button.js';
 import type { RawNode } from '../../index.js';
-class MenuServiceItem extends Button {
+
+export default class MenuServiceItem extends Button {
   static type = 'MenuServiceItem';
 
   constructor(data: RawNode) {
     super(data);
   }
-}
-
-export default MenuServiceItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MenuServiceItemDownload.ts b/src/parser/classes/menus/MenuServiceItemDownload.ts
index 785c8f41..af3259ab 100644
--- a/src/parser/classes/menus/MenuServiceItemDownload.ts
+++ b/src/parser/classes/menus/MenuServiceItemDownload.ts
@@ -1,7 +1,8 @@
-import NavigationEndpoint from '../NavigationEndpoint.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MenuServiceItemDownload extends YTNode {
+import NavigationEndpoint from '../NavigationEndpoint.js';
+
+export default class MenuServiceItemDownload extends YTNode {
   static type = 'MenuServiceItemDownload';
 
   has_separator: boolean;
@@ -9,9 +10,7 @@ class MenuServiceItemDownload extends YTNode {
 
   constructor(data: RawNode) {
     super();
-    this.has_separator = data.hasSeparator;
+    this.has_separator = !!data.hasSeparator;
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint || data.serviceEndpoint);
   }
-}
-
-export default MenuServiceItemDownload;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MultiPageMenu.ts b/src/parser/classes/menus/MultiPageMenu.ts
index 2a877954..e0038921 100644
--- a/src/parser/classes/menus/MultiPageMenu.ts
+++ b/src/parser/classes/menus/MultiPageMenu.ts
@@ -1,11 +1,12 @@
-import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
+import { YTNode, type SuperParsedResult } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MultiPageMenu extends YTNode {
+import Parser from '../../index.js';
+
+export default class MultiPageMenu extends YTNode {
   static type = 'MultiPageMenu';
 
-  header;
-  sections;
+  header: SuperParsedResult<YTNode>;
+  sections: SuperParsedResult<YTNode>;
   style: string;
 
   constructor(data: RawNode) {
@@ -14,6 +15,4 @@ class MultiPageMenu extends YTNode {
     this.sections = Parser.parse(data.sections);
     this.style = data.style;
   }
-}
-
-export default MultiPageMenu;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MultiPageMenuNotificationSection.ts b/src/parser/classes/menus/MultiPageMenuNotificationSection.ts
index 580c4ed0..95b7b5bd 100644
--- a/src/parser/classes/menus/MultiPageMenuNotificationSection.ts
+++ b/src/parser/classes/menus/MultiPageMenuNotificationSection.ts
@@ -1,19 +1,19 @@
 import Parser from '../../index.js';
-import { YTNode } from '../../helpers.js';
+import { type SuperParsedResult, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MultiPageMenuNotificationSection extends YTNode {
+
+export default class MultiPageMenuNotificationSection extends YTNode {
   static type = 'MultiPageMenuNotificationSection';
 
-  items;
+  items: SuperParsedResult<YTNode>;
 
   constructor(data: RawNode) {
     super();
     this.items = Parser.parse(data.items);
   }
 
+  // XXX: Alias for consistency.
   get contents() {
     return this.items;
   }
-}
-
-export default MultiPageMenuNotificationSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MusicMenuItemDivider.ts b/src/parser/classes/menus/MusicMenuItemDivider.ts
index 8046ad10..63f50596 100644
--- a/src/parser/classes/menus/MusicMenuItemDivider.ts
+++ b/src/parser/classes/menus/MusicMenuItemDivider.ts
@@ -1,12 +1,12 @@
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MusicMenuItemDivider extends YTNode {
+
+export default class MusicMenuItemDivider extends YTNode {
   static type = 'MusicMenuItemDivider';
 
   // eslint-disable-next-line
-  constructor(data: RawNode) {
+  constructor(_data: RawNode) {
     super();
+    // XXX: Should check if this ever has any data.
   }
-}
-
-export default MusicMenuItemDivider;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MusicMultiSelectMenu.ts b/src/parser/classes/menus/MusicMultiSelectMenu.ts
index 3fe90121..a4ad2ae8 100644
--- a/src/parser/classes/menus/MusicMultiSelectMenu.ts
+++ b/src/parser/classes/menus/MusicMultiSelectMenu.ts
@@ -1,21 +1,22 @@
-import MusicMultiSelectMenuItem from './MusicMultiSelectMenuItem.js';
-import MusicMenuItemDivider from './MusicMenuItemDivider.js';
-import { YTNode } from '../../helpers.js';
-import Text from '../misc/Text.js';
-import Parser from '../../index.js';
+import { ObservedArray, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class MusicMultiSelectMenu extends YTNode {
+import Parser from '../../index.js';
+import Text from '../misc/Text.js';
+import MusicMenuItemDivider from './MusicMenuItemDivider.js';
+import MusicMultiSelectMenuItem from './MusicMultiSelectMenuItem.js';
+
+export default class MusicMultiSelectMenu extends YTNode {
   static type = 'MusicMultiSelectMenu';
 
-  title: string;
-  options: Array<MusicMultiSelectMenuItem | MusicMenuItemDivider>;
+  title?: Text;
+  options: ObservedArray<MusicMultiSelectMenuItem | MusicMenuItemDivider>;
 
   constructor(data: RawNode) {
     super();
+    if (Reflect.has(data.title, 'musicMenuTitleRenderer')) {
+      this.title = new Text(data.title.musicMenuTitleRenderer?.primaryText);
+    }
 
-    this.title = new Text(data.title.musicMenuTitleRenderer?.primaryText).toString();
     this.options = Parser.parseArray(data.options, [ MusicMultiSelectMenuItem, MusicMenuItemDivider ]);
   }
-}
-
-export default MusicMultiSelectMenu;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/MusicMultiSelectMenuItem.ts b/src/parser/classes/menus/MusicMultiSelectMenuItem.ts
index de0091d2..b95ece5b 100644
--- a/src/parser/classes/menus/MusicMultiSelectMenuItem.ts
+++ b/src/parser/classes/menus/MusicMultiSelectMenuItem.ts
@@ -1,14 +1,15 @@
 import { YTNode } from '../../helpers.js';
-import Text from '../misc/Text.js';
-import NavigationEndpoint from '../NavigationEndpoint.js';
 import type { RawNode } from '../../index.js';
-class MusicMultiSelectMenuItem extends YTNode {
+import NavigationEndpoint from '../NavigationEndpoint.js';
+import Text from '../misc/Text.js';
+
+export default class MusicMultiSelectMenuItem extends YTNode {
   static type = 'MusicMultiSelectMenuItem';
 
   title: string;
   form_item_entity_key: string;
-  selected_icon_type: string;
-  endpoint?: NavigationEndpoint | null;
+  selected_icon_type?: string;
+  endpoint?: NavigationEndpoint;
   selected: boolean;
 
   constructor(data: RawNode) {
@@ -16,10 +17,16 @@ class MusicMultiSelectMenuItem extends YTNode {
 
     this.title = new Text(data.title).toString();
     this.form_item_entity_key = data.formItemEntityKey;
-    this.selected_icon_type = data.selectedIcon?.iconType || null;
-    this.endpoint = data.selectedCommand ? new NavigationEndpoint(data.selectedCommand) : null;
+
+    if (Reflect.has(data, 'selectedIcon')) {
+      this.selected_icon_type = data.selectedIcon.iconType;
+    }
+
+    // @TODO: Check if there any other endpoints we can parse.
+    if (Reflect.has(data, 'selectedCommand')) {
+      this.endpoint = new NavigationEndpoint(data.selectedCommand);
+    }
+
     this.selected = !!this.endpoint;
   }
-}
-
-export default MusicMultiSelectMenuItem;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/menus/SimpleMenuHeader.ts b/src/parser/classes/menus/SimpleMenuHeader.ts
index 2d5de6e3..73145c70 100644
--- a/src/parser/classes/menus/SimpleMenuHeader.ts
+++ b/src/parser/classes/menus/SimpleMenuHeader.ts
@@ -1,18 +1,18 @@
+import { SuperParsedResult, YTNode } from '../../helpers.js';
+import type { RawNode } from '../../index.js';
 import Parser from '../../index.js';
 import Text from '../misc/Text.js';
-import { YTNode } from '../../helpers.js';
-import type { RawNode } from '../../index.js';
-class SimpleMenuHeader extends YTNode {
+
+export default class SimpleMenuHeader extends YTNode {
   static type = 'SimpleMenuHeader';
 
   title: Text;
-  buttons;
+  buttons: SuperParsedResult<YTNode>;
 
   constructor(data: RawNode) {
     super();
     this.title = new Text(data.title);
+    // @TODO: Check if this is of type `Button`.
     this.buttons = Parser.parse(data.buttons);
   }
-}
-
-export default SimpleMenuHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/Author.ts b/src/parser/classes/misc/Author.ts
index c3b92d1b..2cb4b504 100644
--- a/src/parser/classes/misc/Author.ts
+++ b/src/parser/classes/misc/Author.ts
@@ -1,50 +1,44 @@
-import Parser, { RawNode } from '../../index.js';
-import Text from './Text.js';
+import Constants from '../../../utils/Constants.js';
+import { YTNode, observe, type ObservedArray } from '../../helpers.js';
+import Parser, { type RawNode } from '../../index.js';
 import NavigationEndpoint from '../NavigationEndpoint.js';
+import Text from './Text.js';
 import TextRun from './TextRun.js';
 import Thumbnail from './Thumbnail.js';
-import Constants from '../../../utils/Constants.js';
-import { observe, ObservedArray, YTNode } from '../../helpers.js';
 
-class Author {
+export default class Author {
   #nav_text;
 
   id: string;
   name: string;
   thumbnails: Thumbnail[];
-  endpoint: NavigationEndpoint | null;
+  endpoint?: NavigationEndpoint;
   badges: ObservedArray<YTNode>;
-  is_moderator?: boolean | null;
-  is_verified?: boolean | null;
-  is_verified_artist?: boolean | null;
-  url: string | null;
+  is_moderator?: boolean;
+  is_verified?: boolean;
+  is_verified_artist?: boolean;
+  url: string;
 
   constructor(item: RawNode, badges?: any, thumbs?: any, id?: string) {
     this.#nav_text = new Text(item);
 
-    this.id =
-      id ||
-      (this.#nav_text?.runs?.[0] as TextRun)?.endpoint?.payload?.browseId ||
-      this.#nav_text?.endpoint?.payload?.browseId || 'N/A';
-
+    this.id = id || (this.#nav_text?.runs?.[0] as TextRun)?.endpoint?.payload?.browseId || this.#nav_text?.endpoint?.payload?.browseId || 'N/A';
     this.name = this.#nav_text?.text || 'N/A';
     this.thumbnails = thumbs ? Thumbnail.fromResponse(thumbs) : [];
-    this.endpoint = ((this.#nav_text?.runs?.[0] as TextRun) as TextRun)?.endpoint || this.#nav_text?.endpoint || null;
+    this.endpoint = ((this.#nav_text?.runs?.[0] as TextRun) as TextRun)?.endpoint || this.#nav_text?.endpoint;
     this.badges = Array.isArray(badges) ? Parser.parseArray(badges) : observe([] as YTNode[]);
-    this.is_moderator = this.badges?.some((badge: any) => badge.icon_type == 'MODERATOR') || null;
-    this.is_verified = this.badges?.some((badge: any) => badge.style == 'BADGE_STYLE_TYPE_VERIFIED') || null;
-    this.is_verified_artist = this.badges?.some((badge: any) => badge.style == 'BADGE_STYLE_TYPE_VERIFIED_ARTIST') || null;
+    this.is_moderator = this.badges?.some((badge: any) => badge.icon_type == 'MODERATOR');
+    this.is_verified = this.badges?.some((badge: any) => badge.style == 'BADGE_STYLE_TYPE_VERIFIED');
+    this.is_verified_artist = this.badges?.some((badge: any) => badge.style == 'BADGE_STYLE_TYPE_VERIFIED_ARTIST');
 
+    // @TODO: Refactor this mess.
     this.url =
       (this.#nav_text?.runs?.[0] as TextRun)?.endpoint?.metadata?.api_url === '/browse' &&
         `${Constants.URLS.YT_BASE}${(this.#nav_text?.runs?.[0] as TextRun)?.endpoint?.payload?.canonicalBaseUrl || `/u/${(this.#nav_text?.runs?.[0] as TextRun)?.endpoint?.payload?.browseId}`}` ||
-        `${Constants.URLS.YT_BASE}${this.#nav_text?.endpoint?.payload?.canonicalBaseUrl || `/u/${this.#nav_text?.endpoint?.payload?.browseId}`}` ||
-        null;
+        `${Constants.URLS.YT_BASE}${this.#nav_text?.endpoint?.payload?.canonicalBaseUrl || `/u/${this.#nav_text?.endpoint?.payload?.browseId}`}`;
   }
 
   get best_thumbnail(): Thumbnail | undefined {
     return this.thumbnails[0];
   }
-}
-
-export default Author;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/ChildElement.ts b/src/parser/classes/misc/ChildElement.ts
index 0744a9ed..17357c13 100644
--- a/src/parser/classes/misc/ChildElement.ts
+++ b/src/parser/classes/misc/ChildElement.ts
@@ -1,20 +1,23 @@
-
+import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class ChildElement {
+
+export default class ChildElement extends YTNode {
   static type = 'ChildElement';
 
-  text: string | null;
+  text?: string;
   properties;
   child_elements?: ChildElement[];
 
   constructor(data: RawNode) {
-    this.text = data.type.textType?.text?.content || null;
+    super();
+    if (Reflect.has(data.type, 'textType')) {
+      this.text = data.type.textType.text?.content;
+    }
+
     this.properties = data.properties;
 
-    if (data.childElements) {
-      this.child_elements = data.childElements.map((el: any) => new ChildElement(el));
+    if (Reflect.has(data, 'childElements')) {
+      this.child_elements = data.childElements.map((el: RawNode) => new ChildElement(el));
     }
   }
-}
-
-export default ChildElement;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/EmojiRun.ts b/src/parser/classes/misc/EmojiRun.ts
index f82203f2..997b2823 100644
--- a/src/parser/classes/misc/EmojiRun.ts
+++ b/src/parser/classes/misc/EmojiRun.ts
@@ -1,8 +1,8 @@
-import { escape, Run } from './Text.js';
-import Thumbnail from './Thumbnail.js';
 import type { RawNode } from '../../index.js';
+import { escape, type Run } from './Text.js';
+import Thumbnail from './Thumbnail.js';
 
-class EmojiRun implements Run {
+export default class EmojiRun implements Run {
   text: string;
   emoji: {
     emoji_id: string;
@@ -27,7 +27,7 @@ class EmojiRun implements Run {
     };
   }
 
-  toString() {
+  toString(): string {
     return this.text;
   }
 
@@ -35,6 +35,4 @@ class EmojiRun implements Run {
     const escaped_text = escape(this.text);
     return `<img src="${this.emoji.image[0].url}" alt="${escaped_text}" title="${escaped_text}" style="display: inline-block; vertical-align: text-top; height: var(--yt-emoji-size, 1rem); width: var(--yt-emoji-size, 1rem);" loading="lazy" crossorigin="anonymous" />`;
   }
-}
-
-export default EmojiRun;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/Format.ts b/src/parser/classes/misc/Format.ts
index 6a0b65b4..40b29b79 100644
--- a/src/parser/classes/misc/Format.ts
+++ b/src/parser/classes/misc/Format.ts
@@ -2,43 +2,43 @@ import Player from '../../../core/Player.js';
 import { InnertubeError } from '../../../utils/Utils.js';
 import type { RawNode } from '../../index.js';
 
-class Format {
+export default class Format {
   itag: number;
   mime_type: string;
   is_type_otf: boolean;
   bitrate: number;
-  average_bitrate: number;
+  average_bitrate?: number;
   width: number;
   height: number;
 
-  init_range: {
+  init_range?: {
     start: number;
     end: number;
-  } | undefined;
+  };
 
-  index_range: {
+  index_range?: {
     start: number;
     end: number;
-  } | undefined;
+  };
 
   last_modified: Date;
-  content_length: number;
-  quality: string;
-  quality_label: string | undefined;
-  fps: number | undefined;
-  url: string;
-  cipher: string | undefined;
-  signature_cipher: string | undefined;
-  audio_quality: string | undefined;
+  content_length?: number;
+  quality?: string;
+  quality_label?: string;
+  fps?: number;
+  url?: string;
+  cipher?: string;
+  signature_cipher?: string;
+  audio_quality?: string;
   audio_track?: {
     audio_is_default: boolean;
     display_name: string;
     id: string;
   };
   approx_duration_ms: number;
-  audio_sample_rate: number;
-  audio_channels: number;
-  loudness_db: number;
+  audio_sample_rate?: number;
+  audio_channels?: number;
+  loudness_db?: number;
   has_audio: boolean;
   has_video: boolean;
   language?: string | null;
@@ -52,8 +52,8 @@ class Format {
     this.is_type_otf = data.type === 'FORMAT_STREAM_TYPE_OTF';
     this.bitrate = data.bitrate;
     this.average_bitrate = data.averageBitrate;
-    this.width = data.width || undefined;
-    this.height = data.height || undefined;
+    this.width = data.width;
+    this.height = data.height;
 
     this.init_range = data.initRange ? {
       start: parseInt(data.initRange.start),
@@ -68,12 +68,12 @@ class Format {
     this.last_modified = new Date(Math.floor(parseInt(data.lastModified) / 1000));
     this.content_length = parseInt(data.contentLength);
     this.quality = data.quality;
-    this.quality_label = data.qualityLabel || undefined;
-    this.fps = data.fps || undefined;
-    this.url = data.url || undefined;
-    this.cipher = data.cipher || undefined;
-    this.signature_cipher = data.signatureCipher || undefined;
-    this.audio_quality = data.audioQuality || undefined;
+    this.quality_label = data.qualityLabel;
+    this.fps = data.fps;
+    this.url = data.url;
+    this.cipher = data.cipher;
+    this.signature_cipher = data.signatureCipher;
+    this.audio_quality = data.audioQuality;
     this.approx_duration_ms = parseInt(data.approxDurationMs);
     this.audio_sample_rate = parseInt(data.audioSampleRate);
     this.audio_channels = data.audioChannels;
@@ -90,7 +90,7 @@ class Format {
       this.is_descriptive = url_components.get('xtags')?.split(':').find((x: string) => x.startsWith('acont='))?.split('=').at(1) === 'descriptive';
       this.is_original = url_components.get('xtags')?.split(':').find((x: string) => x.startsWith('acont='))?.split('=').at(1) === 'original' || !this.is_dubbed;
 
-      if (data.audioTrack) {
+      if (Reflect.has(data, 'audioTrack')) {
         this.audio_track = {
           audio_is_default: data.audioTrack.audioIsDefault,
           display_name: data.audioTrack.displayName,
@@ -101,13 +101,11 @@ class Format {
   }
 
   /**
-   * Decipher the streaming url of the format.
+   * Deciphers the streaming url of the format.
    * @returns Deciphered URL.
    */
   decipher(player: Player | undefined): string {
     if (!player) throw new InnertubeError('Cannot decipher format, this session appears to have no valid player.');
     return player.decipher(this.url, this.signature_cipher, this.cipher);
   }
-}
-
-export default Format;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/Text.ts b/src/parser/classes/misc/Text.ts
index 0c8d5520..23f14612 100644
--- a/src/parser/classes/misc/Text.ts
+++ b/src/parser/classes/misc/Text.ts
@@ -1,7 +1,7 @@
-import TextRun from './TextRun.js';
-import EmojiRun from './EmojiRun.js';
-import NavigationEndpoint from '../NavigationEndpoint.js';
 import type { RawNode } from '../../index.js';
+import NavigationEndpoint from '../NavigationEndpoint.js';
+import EmojiRun from './EmojiRun.js';
+import TextRun from './TextRun.js';
 
 export interface Run {
   text: string;
@@ -20,12 +20,12 @@ export function escape(text: string) {
 
 export default class Text {
   text?: string;
-  runs;
+  runs?: (EmojiRun | TextRun)[];
   endpoint?: NavigationEndpoint;
 
   constructor(data: RawNode) {
-    if (data?.hasOwnProperty('runs') && Array.isArray(data.runs)) {
-      this.runs = (data.runs as any[]).map((run: any) => run.emoji ?
+    if (typeof data === 'object' && data !== null && Reflect.has(data, 'runs') && Array.isArray(data.runs)) {
+      this.runs = data.runs.map((run: RawNode) => run.emoji ?
         new EmojiRun(run) :
         new TextRun(run)
       );
@@ -46,15 +46,27 @@ export default class Text {
     }
   }
 
-  toHTML() {
+  /**
+   * Converts the text to HTML.
+   * @returns The HTML.
+   */
+  toHTML(): string | undefined {
     return this.runs ? this.runs.map((run) => run.toHTML()).join('') : this.text;
   }
 
-  isEmpty() {
+  /**
+   * Checks if the text is empty.
+   * @returns Whether the text is empty.
+   */
+  isEmpty(): boolean {
     return this.text === undefined;
   }
 
-  toString() {
+  /**
+   * Converts the text to a string.
+   * @returns The text.
+   */
+  toString(): string {
     return this.text || 'N/A';
   }
 }
\ No newline at end of file
diff --git a/src/parser/classes/misc/TextRun.ts b/src/parser/classes/misc/TextRun.ts
index 7c3d53cb..abbd6802 100644
--- a/src/parser/classes/misc/TextRun.ts
+++ b/src/parser/classes/misc/TextRun.ts
@@ -1,10 +1,10 @@
 import NavigationEndpoint from '../NavigationEndpoint.js';
-import { escape, Run } from './Text.js';
+import { escape, type Run } from './Text.js';
 import type { RawNode } from '../../index.js';
 
-class TextRun implements Run {
+export default class TextRun implements Run {
   text: string;
-  endpoint: NavigationEndpoint | undefined;
+  endpoint?: NavigationEndpoint;
   bold: boolean;
   italics: boolean;
   strikethrough: boolean;
@@ -15,11 +15,15 @@ class TextRun implements Run {
     this.bold = Boolean(data.bold);
     this.italics = Boolean(data.italics);
     this.strikethrough = Boolean(data.strikethrough);
-    this.endpoint = data.navigationEndpoint ? new NavigationEndpoint(data.navigationEndpoint) : undefined;
+
+    if (Reflect.has(data, 'navigationEndpoint')) {
+      this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
+    }
+
     this.attachment = data.attachment;
   }
 
-  toString() {
+  toString(): string {
     return this.text;
   }
 
@@ -51,6 +55,4 @@ class TextRun implements Run {
 
     return wrapped_text;
   }
-}
-
-export default TextRun;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/Thumbnail.ts b/src/parser/classes/misc/Thumbnail.ts
index ec4120a3..26e7f743 100644
--- a/src/parser/classes/misc/Thumbnail.ts
+++ b/src/parser/classes/misc/Thumbnail.ts
@@ -1,6 +1,6 @@
 import type { RawNode } from '../../index.js';
 
-class Thumbnail {
+export default class Thumbnail {
   url: string;
   width: number;
   height: number;
@@ -18,6 +18,4 @@ class Thumbnail {
     if (!data || !data.thumbnails) return [];
     return data.thumbnails.map((x: any) => new Thumbnail(x)).sort((a: Thumbnail, b: Thumbnail) => b.width - a.width);
   }
-}
-
-export default Thumbnail;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/misc/VideoDetails.ts b/src/parser/classes/misc/VideoDetails.ts
index c19640af..b9334ba7 100644
--- a/src/parser/classes/misc/VideoDetails.ts
+++ b/src/parser/classes/misc/VideoDetails.ts
@@ -1,7 +1,7 @@
 import Thumbnail from './Thumbnail.js';
 import type { RawNode } from '../../index.js';
 
-class VideoDetails {
+export default class VideoDetails {
   id: string;
   channel_id: string;
   title: string;
@@ -37,6 +37,4 @@ class VideoDetails {
     this.is_upcoming = !!data.isUpcoming;
     this.is_crawlable = !!data.isCrawlable;
   }
-}
-
-export default VideoDetails;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ytkids/AnchoredSection.ts b/src/parser/classes/ytkids/AnchoredSection.ts
index 5934359b..27a9cec1 100644
--- a/src/parser/classes/ytkids/AnchoredSection.ts
+++ b/src/parser/classes/ytkids/AnchoredSection.ts
@@ -1,10 +1,10 @@
+import { YTNode } from '../../helpers.js';
+import type { RawNode } from '../../index.js';
 import Parser from '../../index.js';
 import NavigationEndpoint from '../NavigationEndpoint.js';
 import SectionList from '../SectionList.js';
-import { YTNode } from '../../helpers.js';
-import type { RawNode } from '../../index.js';
 
-class AnchoredSection extends YTNode {
+export default class AnchoredSection extends YTNode {
   static type = 'AnchoredSection';
 
   title: string;
@@ -21,12 +21,12 @@ class AnchoredSection extends YTNode {
     this.title = data.title;
     this.content = Parser.parseItem(data.content, SectionList);
     this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
+
     this.category_assets = {
       asset_key: data.categoryAssets?.assetKey,
       background_color: data.categoryAssets?.backgroundColor
     };
+
     this.category_type = data.categoryType;
   }
-}
-
-export default AnchoredSection;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ytkids/KidsCategoriesHeader.ts b/src/parser/classes/ytkids/KidsCategoriesHeader.ts
index 3044858a..774934ee 100644
--- a/src/parser/classes/ytkids/KidsCategoriesHeader.ts
+++ b/src/parser/classes/ytkids/KidsCategoriesHeader.ts
@@ -1,13 +1,13 @@
 import Parser from '../../index.js';
 import Button from '../Button.js';
 import KidsCategoryTab from './KidsCategoryTab.js';
-import { YTNode } from '../../helpers.js';
+import { type ObservedArray, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class KidsCategoriesHeader extends YTNode {
+export default class KidsCategoriesHeader extends YTNode {
   static type = 'kidsCategoriesHeader';
 
-  category_tabs: KidsCategoryTab[];
+  category_tabs: ObservedArray<KidsCategoryTab>;
   privacy_button: Button | null;
 
   constructor(data: RawNode) {
@@ -15,6 +15,4 @@ class KidsCategoriesHeader extends YTNode {
     this.category_tabs = Parser.parseArray(data.categoryTabs, KidsCategoryTab);
     this.privacy_button = Parser.parseItem(data.privacyButtonRenderer, Button);
   }
-}
-
-export default KidsCategoriesHeader;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ytkids/KidsCategoryTab.ts b/src/parser/classes/ytkids/KidsCategoryTab.ts
index e56a40c3..3e62ac18 100644
--- a/src/parser/classes/ytkids/KidsCategoryTab.ts
+++ b/src/parser/classes/ytkids/KidsCategoryTab.ts
@@ -3,7 +3,7 @@ import NavigationEndpoint from '../NavigationEndpoint.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class KidsCategoryTab extends YTNode {
+export default class KidsCategoryTab extends YTNode {
   static type = 'KidsCategoryTab';
 
   title: Text;
@@ -24,6 +24,4 @@ class KidsCategoryTab extends YTNode {
     this.category_type = data.categoryType;
     this.endpoint = new NavigationEndpoint(data.endpoint);
   }
-}
-
-export default KidsCategoryTab;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/classes/ytkids/KidsHomeScreen.ts b/src/parser/classes/ytkids/KidsHomeScreen.ts
index 7216612b..81f59579 100644
--- a/src/parser/classes/ytkids/KidsHomeScreen.ts
+++ b/src/parser/classes/ytkids/KidsHomeScreen.ts
@@ -1,17 +1,15 @@
 import Parser from '../../index.js';
 import AnchoredSection from './AnchoredSection.js';
-import { YTNode } from '../../helpers.js';
+import { type ObservedArray, YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
 
-class KidsHomeScreen extends YTNode {
+export default class KidsHomeScreen extends YTNode {
   static type = 'kidsHomeScreen';
 
-  anchors;
+  anchors: ObservedArray<AnchoredSection>;
 
   constructor(data: RawNode) {
     super();
     this.anchors = Parser.parseArray(data.anchors, AnchoredSection);
   }
-}
-
-export default KidsHomeScreen;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/parser/nodes.ts b/src/parser/nodes.ts
index b9b56146..4487fa8b 100644
--- a/src/parser/nodes.ts
+++ b/src/parser/nodes.ts
@@ -54,6 +54,7 @@ export { default as CommentDialog } from './classes/comments/CommentDialog.js';
 export { default as CommentReplies } from './classes/comments/CommentReplies.js';
 export { default as CommentReplyDialog } from './classes/comments/CommentReplyDialog.js';
 export { default as CommentsEntryPointHeader } from './classes/comments/CommentsEntryPointHeader.js';
+export { default as CommentsEntryPointTeaser } from './classes/comments/CommentsEntryPointTeaser.js';
 export { default as CommentsHeader } from './classes/comments/CommentsHeader.js';
 export { default as CommentSimplebox } from './classes/comments/CommentSimplebox.js';
 export { default as CommentThread } from './classes/comments/CommentThread.js';
diff --git a/src/parser/parser.ts b/src/parser/parser.ts
index 99b06ce4..d9f049bc 100644
--- a/src/parser/parser.ts
+++ b/src/parser/parser.ts
@@ -319,10 +319,6 @@ export default class Parser {
     return null;
   }
 
-  extra() {
-    Parser.parseItem({}, [ MusicMultiSelectMenuItem, MusicMultiSelectMenuItem ]);
-  }
-
   /**
    * Parses an array of items.
    * @param data - The data to parse.
@@ -502,6 +498,8 @@ export default class Parser {
     'PromotedSparklesWeb',
     'RunAttestationCommand',
     'CompactPromotedVideo',
+    'BrandVideoShelf',
+    'BrandVideoSingleton',
     'StatementBanner',
     'GuideSigninPromo'
   ]);
@@ -574,7 +572,7 @@ export class AppendContinuationItemsAction extends YTNode {
 
   constructor(data: RawNode) {
     super();
-    this.contents = Parser.parse(data.continuationItems, true);
+    this.contents = Parser.parseArray(data.continuationItems);
   }
 }
 
diff --git a/src/parser/youtube/VideoInfo.ts b/src/parser/youtube/VideoInfo.ts
index a65ccea3..07532215 100644
--- a/src/parser/youtube/VideoInfo.ts
+++ b/src/parser/youtube/VideoInfo.ts
@@ -115,7 +115,7 @@ class VideoInfo extends MediaInfo {
       this.primary_info = results.firstOfType(VideoPrimaryInfo);
       this.secondary_info = results.firstOfType(VideoSecondaryInfo);
       this.merchandise = results.firstOfType(MerchandiseShelf);
-      this.related_chip_cloud = secondary_results.firstOfType(RelatedChipCloud)?.content.item().as(ChipCloud);
+      this.related_chip_cloud = secondary_results.firstOfType(RelatedChipCloud)?.content.as(ChipCloud);
 
       if (two_col?.playlist) {
         this.playlist = two_col.playlist;
diff --git a/src/parser/youtube/index.ts b/src/parser/youtube/index.ts
index 4d714926..df475c60 100644
--- a/src/parser/youtube/index.ts
+++ b/src/parser/youtube/index.ts
@@ -3,8 +3,10 @@ export { default as Analytics } from './Analytics.js';
 export { default as Channel } from './Channel.js';
 export * from './Channel.js';
 export { default as Comments } from './Comments.js';
+export { default as Guide } from './Guide.js';
 export { default as History } from './History.js';
 export { default as HomeFeed } from './HomeFeed.js';
+export { default as HashtagFeed } from './HashtagFeed.js';
 export { default as ItemMenu } from './ItemMenu.js';
 export { default as Library } from './Library.js';
 export { default as LiveChat } from './LiveChat.js';
diff --git a/src/utils/FormatUtils.ts b/src/utils/FormatUtils.ts
index adc9773b..d9fe0c75 100644
--- a/src/utils/FormatUtils.ts
+++ b/src/utils/FormatUtils.ts
@@ -115,7 +115,7 @@ class FormatUtils {
           return;
         }
 
-        if ((chunk_end >= format.content_length) || options.range) {
+        if ((chunk_end >= (format.content_length ? format.content_length : 0)) || options.range) {
           must_end = true;
         }
 
diff --git a/test/constants.ts b/test/constants.ts
deleted file mode 100644
index 6e44f535..00000000
--- a/test/constants.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-export const VIDEOS = [
-  {
-    ID: 'bUHZ2k9DYHY',
-    QUERY: 'Space DOES NOT expand everywhere'
-  },
-  {
-    ID: 'WSeNSzJ2-Jw',
-    QUERY: 'Scary Monsters and Nice Sprites Official Audio'
-  },
-  {
-    ID: 'I1qsF0WQy8c',
-    QUERY: 'mkbhd',
-  },
-  {
-    ID: 'OqiXFXlYFi8',
-    QUERY: 'formatted comment text'
-  },
-  {
-    ID: 'O3cCYok_ukk',
-    QUERY: 'upcoming video'
-  },
-  {
-    ID: 'jfKfPfyJRdk',
-    QUERY: 'live video'
-  },
-  {
-    ID: 'juN8qEgLScw',
-    QUERY: 'Galapagos Tortoise Can\'t Get Enough Watermelon'
-  }
-];
-
-export const CHANNELS = [
-  {
-    ID: 'UCXuqSBlHAE6Xw-yeJA0Tunw',
-    NAME: 'Linus Tech Tips'
-  },
-  {
-    ID: 'UCpbpfcZfo-hoDAx2m1blFhg',
-    NAME: 'Learning Blocks'
-  },
-  {
-    ID: 'UCt-oJR5teQIjOAxCmIQvcgA',
-    NAME: "They're Just Movies"
-  },
-  {
-    ID: 'UCOpNcN46UbXVtpKMrmU4Abg',
-    NAME: "Gaming"
-  }
-];
\ No newline at end of file
diff --git a/test/main.test.ts b/test/main.test.ts
index ac115ee7..1322864d 100644
--- a/test/main.test.ts
+++ b/test/main.test.ts
@@ -1,289 +1,391 @@
-import fs from 'fs';
-import { Innertube, Utils } from '../bundle/node.cjs';
-import { CHANNELS, VIDEOS } from './constants';
-import type TextRun from '../src/parser/classes/misc/TextRun';
+import { createWriteStream, existsSync } from 'node:fs';
+import { Innertube, IBrowseResponse, TabbedFeed, Utils, YT, YTMusic, YTNodes } from '../bundle/node.cjs';
+
+describe('YouTube.js Tests', () => {
+  let innertube: Innertube; 
 
-describe('YouTube.js Tests', () => { 
-  let yt: Innertube;
-  
   beforeAll(async () => {
-    yt = await Innertube.create();
+    innertube = await Innertube.create({ generate_session_locally: true });
   });
 
-  describe('Info', () => {
-    let info: any;
-    
-    it('should retrieve full video info', async () => {
-      info = await yt.getInfo(VIDEOS[0].ID);
-      expect(info.basic_info.id).toBe(VIDEOS[0].ID);
+  describe('Main', () => {
+    test('Innertube#getInfo', async () => {
+      const info = await innertube.getInfo('bUHZ2k9DYHY');
+      expect(info.basic_info.id).toBe('bUHZ2k9DYHY');
     });
 
-    it('should have captions', () => {
-      expect(info.captions?.caption_tracks.length).toBeGreaterThan(0);
+    test('Innertube#getBasicInfo', async () => {
+      const info = await innertube.getBasicInfo('bUHZ2k9DYHY');
+      expect(info.basic_info.id).toBe('bUHZ2k9DYHY');
     });
 
-    it('should have chapters', () => {
-      const markers_map = info.player_overlays?.decorated_player_bar?.player_bar?.markers_map;
-      
-      const chapters = (
-        markers_map?.get({ marker_key: 'AUTO_CHAPTERS' }) ||
-        markers_map?.get({ marker_key: 'DESCRIPTION_CHAPTERS' })
-      )?.value?.chapters;
-
-      expect(chapters).toBeDefined();
+    test('Innertube#search', async () => {
+      const search = await innertube.search('Anton Petrov');
+      expect(search.page).toBeDefined();
+      expect(search.results).toBeDefined();
+      expect(search.results?.length).toBeGreaterThan(0);
+      expect(search.sub_menu).toBeDefined();
     });
 
-    it('should have heatmap', () => {
-      const markers_map = info.player_overlays?.decorated_player_bar?.player_bar?.markers_map;
-      const heatmap = markers_map?.get({ marker_key: 'HEATSEEKER' })?.value?.heatmap;
-      expect(heatmap).toBeDefined();
+    describe('Innertube#search', () => {
+      let search: YT.Search;
+
+      beforeAll(async () => {
+        search = await innertube.search('Anton Petrov');
+        expect(search.page).toBeDefined();
+        expect(search.results).toBeDefined();
+        expect(search.results?.length).toBeGreaterThan(0);
+        expect(search.sub_menu).toBeDefined();
+      });
+
+      test('Search#getContinuation', async () => {
+        const incremental_continuation = await search.getContinuation();
+        expect(incremental_continuation).toBeDefined();
+        expect(incremental_continuation.results?.length).toBeGreaterThan(0);
+      });
     });
 
-    it('should have watch next feed', () => {
-      expect(info.watch_next_feed).toBeDefined();
-    });
-    
-    it('should retrieve basic video info', async () => {
-      const b_info = await yt.getBasicInfo(VIDEOS[0].ID);
-      expect(b_info.basic_info.id).toBe(VIDEOS[0].ID);
+    test('Innertube#getSearchSuggestions', async () => {
+      const suggestions = await innertube.getSearchSuggestions('Anton Petrov');
+      expect(suggestions.length).toBeGreaterThan(0);
     });
 
-    it('should be upcoming', async () => {
-      const b_info = await yt.getBasicInfo(VIDEOS[4].ID);
-      expect(b_info.basic_info.is_upcoming).toBe(true);
+    describe('Innertube#getComments', () => {
+      let comments: YT.Comments;
+
+      beforeAll(async () => {
+        comments = await innertube.getComments('bUHZ2k9DYHY');
+        expect(comments).toBeDefined();
+        expect(comments.header).toBeDefined();
+        expect(comments.contents).toBeDefined();
+        expect(comments.contents.length).toBeGreaterThan(0);
+      });
+
+      test('Comments#getContinuation', async () => {
+        const incremental_continuation = await comments.getContinuation();
+        expect(incremental_continuation).toBeDefined();
+        expect(incremental_continuation.contents.length).toBeGreaterThan(0);
+      });
+
+      describe('CommentThread#getReplies', () => {
+        let loaded_comment_thread: YTNodes.CommentThread;
+
+        beforeAll(async () => {
+          let comment_thread = comments.contents.first();
+          loaded_comment_thread = await comment_thread.getReplies();
+          expect(loaded_comment_thread.replies).toBeDefined();
+        });
+
+        test('CommentThread#getContinuation', async () => {
+          const incremental_continuation = await loaded_comment_thread.getContinuation();
+          expect(incremental_continuation.replies).toBeDefined();
+          expect(incremental_continuation.replies?.length).toBeGreaterThan(0);
+        });
+      });
     });
 
-    it('should be live', async () => {
-      const b_info = await yt.getBasicInfo(VIDEOS[5].ID);
-      expect(b_info.basic_info.is_live).toBe(true);
+    describe('Innertube#getHomeFeed', () => {
+      let home_feed: YT.HomeFeed;
+
+      beforeAll(async () => {
+        home_feed = await innertube.getHomeFeed();
+        expect(home_feed).toBeDefined();
+        expect(home_feed.contents).toBeDefined();
+        expect(home_feed.contents.contents?.length).toBeGreaterThan(0);
+      });
+
+      test('HomeFeed#applyFilter', async () => {
+        const filtered_home_feed = await home_feed.applyFilter(home_feed.filter_chips[1]);
+        expect(filtered_home_feed.contents.contents?.length).toBeGreaterThan(0);
+      });
+
+      test('HomeFeed#getContinuation', async () => {
+        const incremental_continuation = await home_feed.getContinuation();
+        expect(incremental_continuation.contents).toBeDefined();
+        expect(incremental_continuation.contents.contents?.length).toBeGreaterThan(0);
+      });
     });
 
-    it('should extract live stream start timestamp', async () => {
-      const b_info = await yt.getBasicInfo(VIDEOS[4].ID);
-      expect(b_info.basic_info.start_timestamp).not.toBeNull()
-      expect(b_info.basic_info.start_timestamp!.toISOString()).toBe('2024-03-30T23:00:00.000Z');
-    })
-  });
-  
-  describe('Search', () => {
-    let search: any;
-    
-    it('should search', async () => {
-      search = await yt.search(VIDEOS[0].QUERY);
-      expect(search.results.length).toBeGreaterThanOrEqual(5);
-      expect(search.playlists).toBeDefined();
-      expect(search.channels).toBeDefined();
-      expect(search.has_continuation).toBe(true);
+    test('Innertube#getGuide', async () => {
+      const guide = await innertube.getGuide();
+      expect(guide).toBeDefined();
+      expect(guide.contents).toBeDefined();
+      expect(guide.contents.length).toBeGreaterThan(0);
     });
-    
-    it('should retrieve search continuation', async () => {
-      const next = await search.getContinuation();
-      expect(next.results.length).toBeGreaterThanOrEqual(5);
-      expect(search.playlists).toBeDefined();
-      expect(search.channels).toBeDefined();
-      expect(search.has_continuation).toBe(true);
+
+    test('Innertube#getTrending', async () => {
+      const trending = await innertube.getTrending();
+      expect(trending).toBeDefined();
+      expect(trending.page.contents).toBeDefined();
+      expect(trending.page.contents_memo).toBeDefined();
+      expect(trending.videos.length).toBeGreaterThan(0); TabbedFeed<IBrowseResponse>;
     });
-    
-    it('should retrieve search suggestions', async () => {
-      const suggestions = await yt.getSearchSuggestions(VIDEOS[0].QUERY);
-      expect(suggestions.length).toBeGreaterThanOrEqual(1);
+
+    describe('Innertube#getChannel', () => {
+      let channel: YT.Channel;
+
+      beforeAll(async () => {
+        channel = await innertube.getChannel('UC7_gcs09iThXybpVgjHZ_7g');
+        expect(channel).toBeDefined();
+        expect(channel.current_tab).toBeDefined();
+        expect(channel.current_tab?.content).toBeDefined();
+        expect(channel.videos.length).toBeGreaterThan(0);
+      });
+
+      test('Channel#getHome', async () => {
+        const home = await channel.getHome();
+        expect(home).toBeDefined();
+        expect(home.current_tab).toBeDefined();
+        expect(home.current_tab?.content).toBeDefined();
+        expect(home.videos.length).toBeGreaterThan(0);
+      });
+
+      describe('Channel#getVideos', () => {
+        let videos: YT.Channel;
+
+        beforeAll(async () => {
+          videos = await channel.getVideos();
+          expect(videos).toBeDefined();
+          expect(videos.current_tab).toBeDefined();
+          expect(videos.current_tab?.content).toBeDefined();
+          expect(videos.videos.length).toBeGreaterThan(0);
+        });
+
+        test('Channel#getContinuation', async () => {
+          const incremental_continuation = await videos.getContinuation();
+          expect(incremental_continuation).toBeDefined();
+          expect(incremental_continuation.videos.length).toBeGreaterThan(0);
+        });
+
+        test('Channel#applyFilter', async () => {
+          const filtered_tab = await videos.applyFilter(videos.filters[1]);
+          expect(filtered_tab).toBeDefined();
+          expect(filtered_tab.videos.length).toBeGreaterThan(0);
+        });
+      });
+
+      // @TODO: Not implemented yet.
+      // test('Channel#getLive', async () => {
+      //   const live = await channel.getLive();
+      //   expect(live).toBeDefined();
+      //   expect(live.current_tab).toBeDefined();
+      //   expect(live.current_tab?.content).toBeDefined();
+      //   expect(live.videos.length).toBeGreaterThan(0);
+      // });
+
+      test('Channel#getPlaylists', async () => {
+        const playlists = await channel.getPlaylists();
+        expect(playlists).toBeDefined();
+        expect(playlists.current_tab).toBeDefined();
+        expect(playlists.current_tab?.content).toBeDefined();
+        expect(playlists.playlists.length).toBeGreaterThan(0);
+      });
+
+      test('Channel#getCommunity', async () => {
+        const community = await channel.getCommunity();
+        expect(community).toBeDefined();
+        expect(community.current_tab).toBeDefined();
+        expect(community.current_tab?.content).toBeDefined();
+        expect(community.posts.length).toBeGreaterThan(0);
+      });
+
+      test('Channel#getChannels', async () => {
+        const channels = await channel.getChannels();
+        expect(channels).toBeDefined();
+        expect(channels.current_tab).toBeDefined();
+        expect(channels.current_tab?.content).toBeDefined();
+        expect(channels.channels.length).toBeGreaterThan(0);
+      });
+
+      test('Channel#getAbout', async () => {
+        const about = await channel.getAbout();
+        expect(about).toBeDefined();
+        expect(about.id).toBe('UC7_gcs09iThXybpVgjHZ_7g');
+        expect(about.description).toBeDefined();
+      });
+
+      test('Channel#search', async () => {
+        const search = await channel.search('How Does Gravity Escape A Black Hole?');
+        expect(search).toBeDefined();
+        expect(search.videos.length).toBeGreaterThan(0);
+      });
+    });
+
+    test('Innertube#getPlaylist', async () => {
+      const playlist = await innertube.getPlaylist('PLsPUh22kYmNBl4h0i4mI5zDflExXJMo_x');
+      expect(playlist).toBeDefined();
+      expect(playlist.videos.length).toBeGreaterThan(0);
+    });
+
+    describe('Innertube#getHashtag', () => {
+      let hashtag: YT.HashtagFeed;
+
+      beforeAll(async () => {
+        hashtag = await innertube.getHashtag('space');
+        expect(hashtag).toBeDefined();
+        expect(hashtag.videos.length).toBeGreaterThan(0);
+      });
+
+      test('HashtagFeed#getContinuation', async () => {
+        const incremental_continuation = await hashtag.getContinuation();
+        expect(incremental_continuation).toBeDefined();
+        expect(incremental_continuation.videos.length).toBeGreaterThan(0);
+      });
+    });
+
+    test('Innertube#resolveURL', async () => {
+      const resolved = await innertube.resolveURL('https://www.youtube.com/watch?v=bUHZ2k9DYHY');
+      expect(resolved).toBeDefined();
+      expect(resolved.payload).toBeDefined();
+    });
+
+    test('Innertube#download', async () => {
+      const id = 'WSeNSzJ2-Jw';
+      const stream = await innertube.download(id, { type: 'video+audio' });
+      const file = createWriteStream(`./${id}.mp4`);
+
+      for await (const chunk of Utils.streamToIterable(stream)) {
+        file.write(chunk);
+      }
+
+      expect(existsSync(`./${id}.mp4`)).toBeTruthy();
     });
   });
-  
-  describe('Comments', () => {
-    let comment_section: Awaited<ReturnType<(typeof yt)['getComments']>>;
-    
-    it('should retrieve comments', async () => {
-      comment_section = await yt.getComments(VIDEOS[1].ID);
-      expect(comment_section.contents.length).toBeGreaterThan(0);
-    });
 
-    it('should parse formatted comments', async () => {
-      const comment_section = await yt.getComments(VIDEOS[3].ID);
-      const channel_owner_thread = comment_section.contents.find(t => t.comment?.author_is_channel_owner);
-      expect(channel_owner_thread).not.toBeUndefined();
-
-      expect(channel_owner_thread!.comment?.content.runs?.length).toBeGreaterThan(0);
-      const runs = channel_owner_thread!.comment!.content.runs! as TextRun[];
-
-      expect(runs[0].bold).toBeTruthy();
-      expect(runs[2].italics).toBeTruthy();
-      expect(runs[4].strikethrough).toBeTruthy();
-    })
-    
-    it('should retrieve next batch of comments', async () => {
-      const next = await comment_section.getContinuation();
-      expect(next.contents.length).toBeGreaterThan(0);
-    });
-    
-    it('should retrieve comment replies', async () => {
-      const thread = comment_section.contents.first();
-      expect(thread?.has_replies).toBe(true);
-
-      const full_thread = await thread?.getReplies();
- 
-      expect(full_thread?.comment?.comment_id).toBe(thread?.comment?.comment_id);
-      expect(full_thread?.replies?.length).toBeLessThanOrEqual(10);
-    });
-
-  });
-  
-  describe('General', () => {
-    it('should create sessions without a player instance', async () => {
-      const nop_yt = await Innertube.create({ retrieve_player: false });
-      expect(nop_yt.session.player).toBeUndefined();
-    });
-
-    it('should create a session from data generated locally', async () => {
-      const loc_yt = await Innertube.create({ generate_session_locally: true, retrieve_player: false });
-      expect(loc_yt.session.context).toBeDefined();
-    });
-
-    it('should resolve a URL', async () => {
-      const url = await yt.resolveURL('https://www.youtube.com/@linustechtips');
-      expect(url.payload.browseId).toBe(CHANNELS[0].ID);
-    });
-
-    it('should retrieve playlist', async () => {
-      const playlist = await yt.getPlaylist('PLLw0AzOz95FU7w2juhPECP9NyGhbZmz_t');
-      expect(playlist.items.length).toBeLessThanOrEqual(100);
-    });
-    
-    it('should retrieve channel', async () => {
-      const channel = await yt.getChannel(CHANNELS[0].ID);
-      expect(channel.videos.length).toBeGreaterThan(0);
-      expect(channel.shelves.length).toBeGreaterThan(0);
-
-      const videos_tab = await channel.getVideos();
-      expect(videos_tab.videos.length).toBeGreaterThan(0);
-
-      const filtered_list = await videos_tab.applyFilter('Popular');
-      expect(filtered_list.videos.length).toBeGreaterThan(0);
-    });
-
-    it('should detect missing channel tabs', async () => {
-      const channel = await yt.getChannel(CHANNELS[2].ID);
-      expect(channel.has_home).toBe(true);
-      expect(channel.has_videos).toBe(true);
-      expect(channel.has_shorts).toBe(false);
-      expect(channel.has_live_streams).toBe(false);
-      expect(channel.has_playlists).toBe(true);
-      expect(channel.has_community).toBe(true);
-      expect(channel.has_channels).toBe(true);
-      expect(channel.has_about).toBe(true);
-      expect(channel.has_search).toBe(true);
-    })
-
-    it('should have no channel tabs', async () => {
-      const channel = await yt.getChannel(CHANNELS[3].ID);
-      expect(channel.has_home).toBe(false);
-      expect(channel.has_videos).toBe(false);
-      expect(channel.has_shorts).toBe(false);
-      expect(channel.has_live_streams).toBe(false);
-      expect(channel.has_playlists).toBe(false);
-      expect(channel.has_community).toBe(false);
-      expect(channel.has_channels).toBe(false);
-      expect(channel.has_about).toBe(false);
-      expect(channel.has_search).toBe(false);
-    })
-
-    it('should retrieve hashtags', async () => {
-      const hashtag = await yt.getHashtag('music');
-      expect(hashtag.header).toBeDefined();
-      expect(hashtag.contents).toBeDefined();
-      expect(hashtag.videos.length).toBeGreaterThan(0);
-    });
-
-    it('should retrieve home feed', async () => {
-      const homefeed = await yt.getHomeFeed();
-      expect(homefeed.header).toBeDefined();
-      expect(homefeed.contents).toBeDefined();
-      expect(homefeed.videos.length).toBeGreaterThan(0);
-    });
-    
-    it('should retrieve trending content', async () => {
-      const trending = await yt.getTrending();
-      expect(trending.videos.length).toBeGreaterThan(0);
-    });
-    
-    it('should download video', async () => {
-      const result = await download(VIDEOS[1].ID, yt);
-      expect(result).toBeTruthy();
-    }, 30000);
-  });
-  
   describe('YouTube Music', () => {
-    let search: any;
+    test('Innertube#music.getInfo', async () => {
+      const info = await innertube.music.getInfo('WSeNSzJ2-Jw');
+      expect(info).toBeDefined();
+      expect(info.basic_info.id).toBe('WSeNSzJ2-Jw');
+    });
 
-    it('should search', async () => {
-      search = await yt.music.search(VIDEOS[1].QUERY);
-      expect(search.songs?.contents.length).toBeLessThanOrEqual(3);
+    describe('Innertube#music.search', () => {
+      let search: YTMusic.Search;
+
+      beforeAll(async () => {
+        search = await innertube.music.search('Mac Miller - Conversation Pt. 1');
+        expect(search).toBeDefined();
+        expect(search.contents).toBeDefined();
+        expect(search.contents?.length).toBeGreaterThan(0);
+      });
+
+      test('Search#applyFilter', async () => {
+        search = await search.applyFilter(search.filters[1]);
+        expect(search).toBeDefined();
+        expect(search.contents).toBeDefined();
+        expect(search.contents?.length).toBeGreaterThan(0);
+      });
+
+      test('Search#getContinuation', async () => {
+        const incremental_continuation = await search.getContinuation();
+        expect(incremental_continuation).toBeDefined();
+        expect(incremental_continuation.contents).toBeDefined();
+        expect(incremental_continuation.contents?.contents).toBeDefined();
+        expect(incremental_continuation.contents?.contents?.length).toBeGreaterThan(0);
+      });
     });
-    
-    it('should retrieve search suggestions', async () => {
-      const suggestions = await yt.music.getSearchSuggestions(VIDEOS[1].QUERY);
-      expect(suggestions.length).toBeLessThanOrEqual(10);
+
+    describe('Innertube#music.getHomeFeed', () => {
+      let home: YTMusic.HomeFeed;
+
+      beforeAll(async () => {
+        home = await innertube.music.getHomeFeed();
+        expect(home).toBeDefined();
+        expect(home.sections).toBeDefined();
+        expect(home.sections?.length).toBeGreaterThan(0);
+      });
+
+      test('HomeFeed#getContinuation', async () => {
+        const incremental_continuation = await home.getContinuation();
+        expect(incremental_continuation).toBeDefined();
+        expect(incremental_continuation.sections).toBeDefined();
+        expect(incremental_continuation.sections?.length).toBeGreaterThan(0);
+      });
     });
-    
-    it('should retrieve track info', async () => {
-      const info = await yt.music.getInfo(VIDEOS[1].ID);
-      expect(info.basic_info.id).toBe(VIDEOS[1].ID);
+
+    test('Innertube#music.getExplore', async () => {
+      const explore = await innertube.music.getExplore();
+      expect(explore).toBeDefined();
+      expect(explore.sections).toBeDefined();
+      expect(explore.sections?.length).toBeGreaterThan(0);
+      expect(explore.top_buttons).toBeDefined();
     });
-    
-    it('should retrieve the "Related" tab', async () => {
-      const info = await yt.music.getInfo(VIDEOS[1].ID);
-      const related = await info.getRelated();
-      expect((related as any).length).toBeGreaterThan(0);
-    });
-    
-    it('should retrieve albums', async () => {
-      const album = await yt.music.getAlbum(search.albums?.contents[0]?.id);
-      expect(album.contents).toBeDefined();
-    });
-    
-    it('should retrieve artists', async () => {
-      const artist = await yt.music.getArtist(search.artists?.contents[0]?.id);
+
+    test('Innertube#music.getArtist', async () => {
+      const artist = await innertube.music.getArtist('UC52ZqHVQz5OoGhvbWiRal6g');
+      expect(artist).toBeDefined();
+      expect(artist.header).toBeDefined();
       expect(artist.sections).toBeDefined();
     });
-    
-    it('should retrieve playlists', async () => {
-      const playlist = await yt.music.getPlaylist(search.playlists?.contents[0]?.id);
+
+    test('Innertube#music.getAlbum', async () => {
+      const album = await innertube.music.getAlbum('MPREb_aWzgoemOnfa');
+      expect(album).toBeDefined();
+      expect(album.header).toBeDefined();
+      expect(album.sections).toBeDefined();
+    });
+
+    test('Innertube#music.getPlaylist', async () => {
+      const playlist = await innertube.music.getPlaylist('PLQxo8OvVvJ1WI_Bp67F2wdIl_R2Rc_1-u');
+      expect(playlist).toBeDefined();
+      expect(playlist.header).toBeDefined();
       expect(playlist.items).toBeDefined();
+      expect(playlist.items?.length).toBeGreaterThan(0);
+    });
+
+    test('Innertube#music.getLyrics', async () => {
+      const lyrics = await innertube.music.getLyrics('eaJHysi5tYg');
+      expect(lyrics).toBeDefined();
+      expect(lyrics?.description).toBeDefined();
+      expect(lyrics?.footer).toBeDefined();
+    });
+
+    test('Innertube#music.getUpNext', async () => {
+      const upnext = await innertube.music.getUpNext('eaJHysi5tYg');
+      expect(upnext).toBeDefined();
+      expect(upnext?.contents).toBeDefined();
+      expect(upnext?.contents?.length).toBeGreaterThan(0);
+    });
+
+    test('Innertube#music.getRelated', async () => {
+      const related = await innertube.music.getRelated('eaJHysi5tYg');
+      expect(related).toBeDefined();
+      expect(related?.length).toBeGreaterThan(0);
+    });
+
+    test('Innertube#music.getSearchSuggestions', async () => {
+      const suggestions = await innertube.music.getSearchSuggestions('Joji - In Tongues');
+      expect(suggestions).toBeDefined();
+      expect(suggestions?.length).toBeGreaterThan(0);
     });
   });
 
   describe('YouTube Kids', () => {
-    it('should search', async () => {
-      const search = await yt.kids.search('cocomelon');
-      expect(search.estimated_results).toBeDefined();
+    test('Innertube#kids.getInfo', async () => {
+      const info = await innertube.kids.getInfo('juN8qEgLScw');
+      expect(info).toBeDefined();
+      expect(info.basic_info?.id).toBe('juN8qEgLScw');
+    });
+
+    test('Innertube#kids.getHomeFeed', async () => {
+      const home = await innertube.kids.getHomeFeed();
+      expect(home).toBeDefined();
+      expect(home.categories).toBeDefined();
+      expect(home.contents?.anchors?.length).toBeGreaterThan(0);
+    });
+
+    test('Innertube#kids.getChannel', async () => {
+      const channel = await innertube.kids.getChannel('UCpbpfcZfo-hoDAx2m1blFhg');
+      expect(channel).toBeDefined();
+      expect(channel.contents).toBeDefined();
+      expect(channel.header).toBeDefined();
+    });
+
+    test('Innertube#kids.search', async () => {
+      const search = await innertube.kids.search('Paw Patrol');
+      expect(search).toBeDefined();
+      expect(search.contents).toBeDefined();
       expect(search.contents?.length).toBeGreaterThan(0);
     });
-
-    it('should retrieve home feed', async () => {
-      const homefeed = await yt.kids.getHomeFeed();
-      expect(homefeed.contents).toBeDefined();
-      expect(homefeed.videos.length).toBeGreaterThan(0);
-    });
-    
-    it('should retrieve video info', async () => {
-      const info = await yt.kids.getInfo(VIDEOS[6].ID);
-      expect(info.basic_info?.id).toBe(VIDEOS[6].ID);
-    });
-
-    it('should retrieve a channel', async () => {
-      const channel = await yt.kids.getChannel(CHANNELS[1].ID);
-      expect(channel.videos.length).toBeGreaterThan(0);
-    });
   });
-});
-
-async function download(id: string, yt: Innertube): Promise<boolean> {   
-  const stream = await yt.download(id, { type: 'video+audio' });
-  const file = fs.createWriteStream(`./${id}.mp4`);
-
-  for await (const chunk of Utils.streamToIterable(stream)) {
-    file.write(chunk);
-  }
-  
-  return fs.existsSync(`./${id}.mp4`);
-}
\ No newline at end of file
+});
\ No newline at end of file