export type UseFetchStateProps<T> = {
    isError: boolean;
    isLoading: boolean;
    msg: {
        code: number;
        msg: string;
    };
    data?: T;
    isFirstFetch: boolean;
};
export declare function useFetch<DataStructure>(url?: string, options?: {
    method: "POST" | "GET";
    body: unknown | null;
}): {
    data: DataStructure | undefined;
    isLoading: boolean;
    isError: boolean;
    isFirstFetch: boolean;
    msg: {
        code: number;
        msg: string;
    };
};