Method transformResponse

packages/ai-fal/src/adapters/audio.ts:113–149

(
    response: Result<OutputType<TModel>>,
  )

  }

  private transformResponse(
    response: Result<OutputType<TModel>>,
  ): AudioGenerationResult {
    const data = response.data as Record<string, unknown>

    // fal returns { audio: { url, content_type } } or { audio_url: string }
    let audioUrl: string | undefined
    let contentType: string | undefined

    if (
      data['audio'] &&
      typeof data['audio'] === 'object' &&
      'url' in data['audio']
    ) {
      const audioObj = data['audio'] as { url: string; content_type?: string }
      audioUrl = audioObj.url
      contentType = audioObj.content_type
    } else if (typeof data.audio_url === 'string') {
      audioUrl = data.audio_url
    }

    if (!audioUrl) {
      throw new Error('Audio URL not found in fal audio generation response')
    }

    const usage = buildFalUsage(takeBillableUnits(response.requestId))

    return {
      id: response.requestId || this.generateId(),
      model: this.model,
      audio: {
        url: audioUrl,
        contentType: deriveAudioContentType(contentType, audioUrl),
      },
      ...(usage ? { usage } : {}),
    }
  }
}

export function falAudio<TModel extends FalModel>(