Function downloadFromS3Stream

apps/sim/lib/uploads/providers/s3/client.ts:226–237

(
  key: string,
  customConfig?: S3Config
)

 * never resident in memory.
 */
export async function downloadFromS3Stream(
  key: string,
  customConfig?: S3Config
): Promise<Readable> {
  const config = customConfig || { bucket: S3_CONFIG.bucket, region: S3_CONFIG.region }
  const command = new GetObjectCommand({ Bucket: config.bucket, Key: key })
  const response = await getS3Client().send(command)
  if (!response.Body) {
    throw new Error(`S3 object has no body: ${key}`)
  }
  return response.Body as Readable
}

/**
 * Check whether an object exists in S3 (and return its size when it does).