Signature

interface RouteError extends Error {
  status: number;
  statusText: string;
  data?: unknown;
}

Contract

Extends Error with status, statusText, and optional data. Use isRouteErrorResponse to narrow an unknown failure before reading those fields.

import type { RouteError } from "@kasperrt/smolter/preact";

export function errorTitle(error: RouteError): string {
  return `${error.status} ${error.statusText}: ${error.message}`;
}

Usage and limits

Not every loader failure is an HTTP error. Ordinary Error values have no guaranteed status. JSON action validation data returned through data(...) remains action data rather than automatically becoming a RouteError.

Fields

status: number;

statusText: string;

data?: unknown;