fix(ytmusic): fix music#getLyrics() & music#getUpNext()

These were broken due to recent changes in the parser — both should be fixed now. Note that `music#getRelated()` is still broken.

src/parser/classes/PlaylistPanelVideo.js

@@ -21,8 +21,8 @@ class PlaylistPanelVideo extends YTNode {
       seconds: timeToSeconds(new Text(data.lengthText).toString())
     };
 
-    const album = new Text(data.longBylineText).runs.find((run) => run.endpoint?.browse?.id.startsWith('MPR'));
-    const artists = new Text(data.longBylineText).runs.filter((run) => run.endpoint?.browse?.id.startsWith('UC'));
+    const album = new Text(data.longBylineText).runs?.find((run) => run.endpoint?.browse?.id.startsWith('MPR'));
+    const artists = new Text(data.longBylineText).runs?.filter((run) => run.endpoint?.browse?.id.startsWith('UC'));
 
     this.author = new Text(data.shortBylineText).toString();
 
@@ -35,11 +35,13 @@ class PlaylistPanelVideo extends YTNode {
       };
     }
 
-    this.artists = artists.map((artist) => ({
-      name: artist.text,
-      channel_id: artist.endpoint?.browse.id,
-      endpoint: artist.endpoint
-    }));
+    if (artists) {
+      this.artists = artists.map((artist) => ({
+        name: artist.text,
+        channel_id: artist.endpoint?.browse.id,
+        endpoint: artist.endpoint
+      }));
+    }
 
     this.badges = Parser.parse(data.badges);
     this.menu = Parser.parse(data.menu);

src/parser/classes/SingleColumnMusicWatchNextResults.js

@@ -6,7 +6,7 @@ class SingleColumnMusicWatchNextResults extends YTNode {
 
   constructor(data) {
     super();
-    return Parser.parse(data);
+    this.contents = Parser.parse(data);
   }
 }
 

src/parser/classes/Tabbed.js

@@ -6,7 +6,7 @@ class Tabbed extends YTNode {
 
   constructor(data) {
     super();
-    return Parser.parse(data);
+    this.contents = Parser.parse(data);
   }
 }