From 470d8d94063f0159cd005c9eb15fd1a4a175bea0 Mon Sep 17 00:00:00 2001
From: LuanRT <luan.lrt4@gmail.com>
Date: Tue, 28 Mar 2023 20:50:50 -0300
Subject: [PATCH] fix(PlayerCaptionsTracklist): parse props only if they exist
 in the node

Fixes #372
---
 src/parser/classes/PlayerCaptionsTracklist.ts | 68 +++++++++++--------
 1 file changed, 39 insertions(+), 29 deletions(-)

diff --git a/src/parser/classes/PlayerCaptionsTracklist.ts b/src/parser/classes/PlayerCaptionsTracklist.ts
index 4c9a194ac..0aedcaa77 100644
--- a/src/parser/classes/PlayerCaptionsTracklist.ts
+++ b/src/parser/classes/PlayerCaptionsTracklist.ts
@@ -1,10 +1,11 @@
 import Text from './misc/Text.js';
 import { YTNode } from '../helpers.js';
+import { RawNode } from '../index.js';
 
 class PlayerCaptionsTracklist extends YTNode {
   static type = 'PlayerCaptionsTracklist';
 
-  caption_tracks: {
+  caption_tracks?: {
     base_url: string;
     name: Text;
     vss_id: string;
@@ -13,7 +14,7 @@ class PlayerCaptionsTracklist extends YTNode {
     is_translatable: boolean;
   }[];
 
-  audio_tracks: {
+  audio_tracks?: {
     audio_track_id: string;
     captions_initial_state: string;
     default_caption_track_index: number;
@@ -22,39 +23,48 @@ class PlayerCaptionsTracklist extends YTNode {
     caption_track_indices: number;
   }[];
 
-  default_audio_track_index: number;
+  default_audio_track_index?: number;
 
-  translation_languages: {
+  translation_languages?: {
     language_code: string;
     language_name: Text;
   }[];
 
-  constructor(data: any) {
+  constructor(data: RawNode) {
     super();
-    this.caption_tracks = data.captionTracks.map((ct: any) => ({
-      base_url: ct.baseUrl,
-      name: new Text(ct.name),
-      vss_id: ct.vssId,
-      language_code: ct.languageCode,
-      kind: ct.kind,
-      is_translatable: ct.isTranslatable
-    }));
-
-    this.audio_tracks = data.audioTracks.map((at: any) => ({
-      audio_track_id: at.audioTrackId,
-      captions_initial_state: at.captionsInitialState,
-      default_caption_track_index: at.defaultCaptionTrackIndex,
-      has_default_track: at.hasDefaultTrack,
-      visibility: at.visibility,
-      caption_track_indices: at.captionTrackIndices
-    }));
-
-    this.default_audio_track_index = data.defaultAudioTrackIndex;
-
-    this.translation_languages = data.translationLanguages.map((tl: any) => ({
-      language_code: tl.languageCode,
-      language_name: new Text(tl.languageName)
-    }));
+
+    if (Reflect.has(data, 'captionTracks')) {
+      this.caption_tracks = data.captionTracks.map((ct: any) => ({
+        base_url: ct.baseUrl,
+        name: new Text(ct.name),
+        vss_id: ct.vssId,
+        language_code: ct.languageCode,
+        kind: ct.kind,
+        is_translatable: ct.isTranslatable
+      }));
+    }
+
+    if (Reflect.has(data, 'audioTracks')) {
+      this.audio_tracks = data.audioTracks.map((at: any) => ({
+        audio_track_id: at.audioTrackId,
+        captions_initial_state: at.captionsInitialState,
+        default_caption_track_index: at.defaultCaptionTrackIndex,
+        has_default_track: at.hasDefaultTrack,
+        visibility: at.visibility,
+        caption_track_indices: at.captionTrackIndices
+      }));
+    }
+
+    if (Reflect.has(data, 'defaultAudioTrackIndex')) {
+      this.default_audio_track_index = data.defaultAudioTrackIndex;
+    }
+
+    if (Reflect.has(data, 'translationLanguages')) {
+      this.translation_languages = data.translationLanguages.map((tl: any) => ({
+        language_code: tl.languageCode,
+        language_name: new Text(tl.languageName)
+      }));
+    }
   }
 }