feat(parser): Support CommentView nodes (#614)

src/parser/classes/comments/CommentThread.ts

@@ -2,6 +2,7 @@ import { Parser } from '../../index.js';
 import Button from '../Button.js';
 import ContinuationItem from '../ContinuationItem.js';
 import Comment from './Comment.js';
+import CommentView from './CommentView.js';
 import CommentReplies from './CommentReplies.js';
 
 import { InnertubeError } from '../../../utils/Utils.js';
@@ -17,15 +18,20 @@ export default class CommentThread extends YTNode {
   #actions?: Actions;
   #continuation?: ContinuationItem;
 
-  comment: Comment | null;
-  replies?: ObservedArray<Comment>;
+  comment: Comment | CommentView | null;
+  replies?: ObservedArray<Comment | CommentView>;
   comment_replies_data: CommentReplies | null;
   is_moderated_elq_comment: boolean;
   has_replies: boolean;
 
   constructor(data: RawNode) {
     super();
-    this.comment = Parser.parseItem(data.comment, Comment);
+
+    if (Reflect.has(data, 'commentViewModel')) {
+      this.comment = Parser.parseItem(data.commentViewModel, CommentView);
+    } else {
+      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;
@@ -51,7 +57,7 @@ export default class CommentThread extends YTNode {
     if (!response.on_response_received_endpoints_memo)
       throw new InnertubeError('Unexpected response.', response);
 
-    this.replies = observe(response.on_response_received_endpoints_memo.getType(Comment).map((comment) => {
+    this.replies = observe(response.on_response_received_endpoints_memo.getType(Comment, CommentView).map((comment) => {
       comment.setActions(this.#actions);
       return comment;
     }));

src/parser/classes/comments/CommentView.ts

@@ -0,0 +1,88 @@
+import { YTNode } from '../../helpers.js';
+import type { RawNode } from '../../index.js';
+
+import type Actions from '../../../core/Actions.js';
+import Author from '../misc/Author.js';
+import Text from '../misc/Text.js';
+
+export default class CommentView extends YTNode {
+  static type = 'CommentView';
+
+  #actions?: Actions;
+
+  comment_id: string;
+  is_pinned: boolean;
+  keys: {
+    comment: string;
+    comment_surface: string;
+    toolbar_state: string;
+    toolbar_surface: string;
+    shared: string;
+  };
+
+  content?: Text;
+  published_time?: string;
+  author_is_channel_owner?: boolean;
+  like_count?: string;
+  reply_count?: string;
+  is_member?: boolean;
+  member_badge?: {
+    url: string,
+    a11y: string;
+  };
+  author?: Author;
+
+  is_liked?: boolean;
+  is_disliked?: boolean;
+  is_hearted?: boolean;
+
+  constructor(data: RawNode) {
+    super();
+
+    this.comment_id = data.commentId;
+    this.is_pinned = !!data.pinnedText;
+
+    this.keys = {
+      comment: data.commentKey,
+      comment_surface: data.commentSurfaceKey,
+      toolbar_state: data.toolbarStateKey,
+      toolbar_surface: data.toolbarSurfaceKey,
+      shared: data.sharedKey
+    };
+  }
+
+  applyMutations(comment?: RawNode, toolbar_state?: RawNode) {
+    if (comment) {
+      this.content = Text.fromAttributed(comment.properties.content);
+      this.published_time = comment.properties.publishedTime;
+      this.author_is_channel_owner = !!comment.author.isCreator;
+
+      this.like_count = comment.toolbar.likeCountNotliked ? comment.toolbar.likeCountNotliked : '0';
+      this.reply_count = comment.toolbar.replyCount ? comment.toolbar.replyCount : '0';
+
+      this.is_member = !!comment.author.sponsorBadgeUrl;
+
+      if (Reflect.has(comment.author, 'sponsorBadgeUrl')) {
+        this.member_badge = {
+          url: comment.author.sponsorBadgeUrl,
+          a11y: comment.author.A11y
+        };
+      }
+
+      this.author = new Author({
+        simpleText: comment.author.displayName,
+        navigationEndpoint: comment.avatar.endpoint
+      }, comment.author, comment.avatar.image, comment.author.channelId);
+    }
+
+    if (toolbar_state) {
+      this.is_hearted = toolbar_state.heartState === 'TOOLBAR_HEART_STATE_HEARTED';
+      this.is_liked = toolbar_state.likeState === 'TOOLBAR_LIKE_STATE_LIKED';
+      this.is_disliked = toolbar_state.likeState === 'TOOLBAR_HEART_STATE_DISLIKED';
+    }
+  }
+
+  setActions(actions: Actions | undefined) {
+    this.#actions = actions;
+  }
+}

src/parser/classes/misc/Author.ts

@@ -25,10 +25,21 @@ export default class Author {
     this.name = nav_text?.text || 'N/A';
     this.thumbnails = thumbs ? Thumbnail.fromResponse(thumbs) : [];
     this.endpoint = ((nav_text?.runs?.[0] as TextRun) as TextRun)?.endpoint || 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');
-    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');
+
+    if (badges) {
+      if (Array.isArray(badges)) {
+        this.badges = Parser.parseArray(badges);
+        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');
+      } else {
+        this.badges = observe([] as YTNode[]);
+        this.is_verified = !!badges.isVerified;
+        this.is_verified_artist = !!badges.isArtist;
+      }
+    } else {
+      this.badges = observe([] as YTNode[]);
+    }
 
     // @TODO: Refactor this mess.
     this.url =