export interface FetchState<T> {
    data: T | null;
    error: any;
    loading: boolean;
    refetch: (init?: RequestInit) => Promise<void>;
}
interface FetchOptions {
    key?: string;
    immediate?: boolean;
}
/**
 * A hook that wraps the fetch API with state management, abort control, and optional caching.
 * @param input The URL or Request object to fetch
 * @param init Optional fetch init options
 * @param opts Additional options for controlling the fetch behavior
 * @returns FetchState object containing data, error, loading state, and refetch function
 */
export declare function useFetch<T = unknown>(input: string | Request, init?: RequestInit, opts?: FetchOptions): FetchState<T>;
export {};