import { FetchFunc } from './FetchProvider';
/**
 * useRefetch hook
 *
 * This returns only `refetch` part of what `useFetch` returns.
 *
 * @example
 * import { useFetch } from 'react-hooks-fetch';
 *
 * const refetch = useRefetch(desc);
 * refetch('1');
 */
export declare function useRefetch<Input, Result>(fn: FetchFunc<Input, Result>): (input: Input) => void;
export declare function useFetch<Input, Result>(fn: FetchFunc<Input, Result>, options: {
    allowUndefined: true;
}): {
    input: Input | undefined;
    result: Result | undefined;
    refetch: (input: Input) => void;
};
export declare function useFetch<Input, Result>(fn: FetchFunc<Input, Result>): {
    input: Input;
    result: Result;
    refetch: (input: Input) => void;
};