discord: Fix TTS functionality by updating @discordjs/voice (Resolves #1114)

Author: hakatashi

discord/speeches/openai.ts

@@ -12,7 +12,7 @@ const speech: SynthesizeFunction = async (text: string, voiceType: VoiceType, op
 	});
 
 	return {
-		data: Buffer.from(await mp3.arrayBuffer()),
+		data: Buffer.from(mp3.data),
 	};
 };
 

discord/tts.ts

@@ -388,6 +388,7 @@ export default class TTS extends EventEmitter {
 					]);
 				});
 			} catch (error) {
+				log.error('stack' in error ? error.stack : error);
 				this.emit('message', `エラー😢: ${error.message ? error.message : inspect(error, {depth: null, colors: false})}`);
 			}
 		}

lib/openai.ts

@@ -98,7 +98,7 @@ const checkAudioSpeechCreateModel = (params: SpeechCreateParams) => {
 	throw new Error(`Unsupported model for audio.speech.create: ${params.model}`);
 }
 
-const audioSpeechCreate = async (params: SpeechCreateParams): Promise<Response> => {
+const audioSpeechCreate = async (params: SpeechCreateParams): Promise<Response & {data: ArrayBuffer}> => {
 	await checkUsageLimit('discord');
 	const model = checkAudioSpeechCreateModel(params);
 
@@ -110,14 +110,14 @@ const audioSpeechCreate = async (params: SpeechCreateParams): Promise<Response>
 	}
 
 	let cost: number | null = null;
+	const data = await response.arrayBuffer();
 
 	if (model === 'gpt-4o-mini-tts') {
 		// The price for the gpt-4o-mini-tts model is calculated against the number of tokens, but
 		// currently it is not possible to get the usage information from the response.
 		// For now, we will use the official cost estimation equation provided by OpenAI:
 		// $0.015 / minute
 		// https://community.openai.com/t/how-do-i-calculate-the-usage-cost-when-using-the-gpt-4o-mini-tts-model/1263804
-		const data = await response.arrayBuffer();
 		const duration = await mp3Duration(Buffer.from(data));
 		cost = (duration / 60) * 0.015;
 	} else {
@@ -144,7 +144,10 @@ const audioSpeechCreate = async (params: SpeechCreateParams): Promise<Response>
 		cost,
 	});
 
-	return response;
+	return {
+		...response,
+		data,
+	};
 };
 
 const checkChatCompletionCreateModel = (params: ChatCompletionCreateParamsNonStreaming): string => {