declare type OptionsType = {
    method?: string;
    headers?: {
        [index: string]: string;
    };
    cache?: string;
    body?: string;
};
declare type ResponseType = {
    ok: boolean;
    status: number;
    statusText: string;
    headers: Headers;
    text: Function;
    json: Function;
};
declare type VolleyType = {
    fetch(url: string | null, opts?: Partial<OptionsType>): Promise<ResponseType>;
};
declare const _default: VolleyType;
export default _default;