Function extractErrorMessage

web-common/src/lib/errors.ts:106–124

(error: unknown)

 * and plain Error (message).
 */
export function extractErrorMessage(error: unknown): string {
  if (!error || typeof error !== "object")
    return String(error ?? "Unknown error");
  const e = error as Record<string, unknown>;
  // ConnectRPC error
  if (typeof e.rawMessage === "string" && e.rawMessage) return e.rawMessage;
  // HTTPError (Axios/REST)
  const resp = e.response;
  if (resp && typeof resp === "object") {
    const data = (resp as Record<string, unknown>).data;
    if (data && typeof data === "object") {
      const msg = (data as Record<string, unknown>).message;
      if (typeof msg === "string" && msg) return msg;
    }
  }
  // Plain Error
  if (typeof e.message === "string" && e.message) return e.message;
  return "Unknown error";
}

/**
 * Extracts an HTTP status code from any error shape.