Function extractHttpStatusCode

src/node/services/mcpServerManager.ts:217–262

(error: unknown)

}

function extractHttpStatusCode(error: unknown): number | null {
  if (!error || typeof error !== "object") {
    return null;
  }

  const obj = error as Record<string, unknown>;

  // A few common shapes across fetch libraries / AI SDK.
  const statusCode = obj.statusCode;
  if (typeof statusCode === "number") {
    return statusCode;
  }

  const status = obj.status;
  if (typeof status === "number") {
    return status;
  }

  const response = obj.response;
  if (response && typeof response === "object") {
    const responseStatus = (response as Record<string, unknown>).status;
    if (typeof responseStatus === "number") {
      return responseStatus;
    }
  }

  const cause = obj.cause;
  if (cause && typeof cause === "object") {
    const causeStatus = (cause as Record<string, unknown>).statusCode;
    if (typeof causeStatus === "number") {
      return causeStatus;
    }
  }

  // Best-effort fallback on message contents.
  const message = obj.message;
  if (typeof message === "string") {
    const re = /\b(400|401|403|404|405)\b/;
    const match = re.exec(message);
    if (match) {
      return Number(match[1]);
    }
  }

  return null;
}

function shouldAutoFallbackToSse(error: unknown): boolean {
  const status = extractHttpStatusCode(error);