Function fileContentLength

packages/effect/src/unstable/http/HttpBody.ts:487–498

(
  size: FileSystem.SizeInput,
  options?: {
    readonly bytesToRead?: FileSystem.SizeInput | undefined
    readonly offset?: FileSystem.SizeInput | undefined
  }
)

): Stream => new Stream(body, contentType ?? "application/octet-stream", contentLength)

const fileContentLength = (
  size: FileSystem.SizeInput,
  options?: {
    readonly bytesToRead?: FileSystem.SizeInput | undefined
    readonly offset?: FileSystem.SizeInput | undefined
  }
): number => {
  const available = Math.max(0, Number(size) - Number(options?.offset ?? 0))
  return options?.bytesToRead === undefined
    ? available
    : Math.min(available, Math.max(0, Number(options.bytesToRead)))
}

/**
 * Creates a streaming HTTP body for a file path.