feat: allow checking whether a channel has optional tabs (#296)

src/core/TabbedFeed.ts

@@ -47,6 +47,10 @@ class TabbedFeed extends Feed {
     return new TabbedFeed(this.#actions, response.data, false);
   }
 
+  hasTabWithURL(url: string): boolean {
+    return this.#tabs.some((tab) => tab.endpoint.metadata.url?.split('/').pop() === url);
+  }
+
   get title(): string | undefined {
     return this.page.contents_memo.getType(Tab)?.find((tab) => tab.selected)?.title.toString();
   }

src/parser/youtube/Channel.ts

@@ -196,6 +196,26 @@ export default class Channel extends TabbedFeed {
     return new Channel(this.actions, page, true);
   }
 
+  get has_videos(): boolean {
+    return this.hasTabWithURL('videos');
+  }
+
+  get has_shorts(): boolean {
+    return this.hasTabWithURL('shorts');
+  }
+
+  get has_live_streams(): boolean {
+    return this.hasTabWithURL('streams');
+  }
+
+  get has_playlists(): boolean {
+    return this.hasTabWithURL('playlists');
+  }
+
+  get has_community(): boolean {
+    return this.hasTabWithURL('community');
+  }
+
   /**
    * Retrives list continuation.
    */

test/constants.ts

@@ -37,5 +37,9 @@ export const CHANNELS = [
   {
     ID: 'UCpbpfcZfo-hoDAx2m1blFhg',
     NAME: 'Learning Blocks'
+  },
+  {
+    ID: 'UCt-oJR5teQIjOAxCmIQvcgA',
+    NAME: "They're Just Movies"
   }
 ];

test/main.test.ts

@@ -163,6 +163,15 @@ describe('YouTube.js Tests', () => {
       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_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);
+    })
+
     it('should retrieve home feed', async () => {
       const homefeed = await yt.getHomeFeed();
       expect(homefeed.header).toBeDefined();