/**
 * HTTP error interface extending Error with status information
 */
interface HttpError extends Error {
    status: number;
    statusText: string;
}
/**
 * Options for the useFetch hook
 */
interface UseFetchOptions extends Omit<RequestInit, 'signal'> {
    method?: string;
    headers?: Record<string, string>;
    body?: string | FormData | URLSearchParams;
    cache?: RequestCache;
    credentials?: RequestCredentials;
    mode?: RequestMode;
    redirect?: RequestRedirect;
    referrer?: string;
    referrerPolicy?: ReferrerPolicy;
    integrity?: string;
    keepalive?: boolean;
    onSuccess?: (data: any) => void;
    onError?: (error: Error) => void;
    onFetch?: () => void;
}
/**
 * Return value for the useFetch hook
 */
interface UseFetchReturnValue<T> {
    data: T | null;
    loading: boolean;
    error: Error | null;
    startFetch: () => Promise<void>;
}
/**
 * Hook for fetching data from URLs
 *
 * This hook provides a simple way to fetch data with proper TypeScript generics,
 * error handling, and automatic JSON parsing. It manages loading states and
 * provides a fetch function for manual data fetching.
 *
 * Note: This hook does not cache requests - each call triggers a fresh fetch.
 * The hook does not automatically fetch on mount - use the returned fetch function.
 *
 * @param url - The URL to fetch data from
 * @param options - Optional fetch configuration including callbacks
 * @returns Object containing data, loading state, error, and fetch function
 *
 * @example
 * ```tsx
 * function UserProfile({ userId }: { userId: string }) {
 *   const { data: user, loading, error, fetch } = useFetch<User>(
 *     `https://api.example.com/users/${userId}`,
 *     {
 *       headers: { 'Authorization': 'Bearer token' },
 *       onSuccess: (data) => console.log('User loaded:', data),
 *       onError: (error) => console.error('Failed to load user:', error),
 *       onFetch: () => console.log('Fetching user data...')
 *     }
 *   );
 *
 *   // Fetch data when component mounts or when needed
 *   useEffect(() => {
 *     fetch();
 *   }, [fetch]);
 *
 *   if (loading) return <div>Loading...</div>;
 *   if (error) return <div>Error: {error.message}</div>;
 *   if (!user) return <div>No user data</div>;
 *
 *   return (
 *     <div>
 *       <h1>{user.name}</h1>
 *       <p>{user.email}</p>
 *       <button onClick={fetch}>Refresh</button>
 *     </div>
 *   );
 * }
 * ```
 */
declare function useFetch<T = unknown>(url: string, options?: UseFetchOptions): UseFetchReturnValue<T>;
export { useFetch };
export type { UseFetchOptions, UseFetchReturnValue, HttpError };