declare const IMAGE_CATEGORIES: readonly ["kitsune", "neko", "husbando", "waifu"];
declare const GIF_CATEGORIES: readonly ["baka", "bite", "blush", "bored", "cry", "cuddle", "dance", "facepalm", "feed", "happy", "highfive", "hug", "kiss", "laugh", "pat", "pout", "shrug", "slap", "sleep", "smile", "smug", "stare", "think", "thumbsup", "tickle", "wave", "wink", "kick", "handhold", "punch", "shoot", "yeet", "poke", "nod", "nom", "nope", "handshake", "lurk", "peck", "yawn", "angry", "run"];
type Nullable<T> = T | undefined | null;
export type NbCategories = (typeof GIF_CATEGORIES)[number] | (typeof IMAGE_CATEGORIES)[number];
/** @deprecated This will be removed in the next major version */
export type NbEndpointMetadata = Record<string, {
    format: string;
    min: string;
    max: string;
}>;
export type NbIndividualResponse = {
    artist_href?: string;
    artist_name?: string;
    source_url?: string;
    anime_name?: string;
    url: string;
};
export type NbResponse = {
    results: NbIndividualResponse[];
};
export type NbBufferResponse = NbIndividualResponse & {
    data: Buffer;
};
export type RatelimitHandleMode = "sleep" | "throw";
export interface ClientOptions {
    ratelimitHandleMode: RatelimitHandleMode;
}
/**
 * A quick function to fetch a random file URL along with its metadata (if available).
 *
 * If you are going to call this function multiple times, it's better to initialize a new `Client` instead.
 *
 * @param category The category to fetch the file URL from. If omitted, it picks a random category.
 */
export declare function fetchRandom(category?: NbCategories): Promise<NbResponse>;
export declare class Client {
    #private;
    constructor(clientOptions?: Partial<NbBufferResponse>);
    /**
     * Fetch and download a random file with its metadata (if available).
     * For more advanced options, you should use the `Client.fetch()` method and
     * fetch the file by yourself.
     *
     * Refer to the documentation for more details: https://docs.nekos.best/api/endpoints.html#get-categoryfilenameformat
     *
     * @param category The category to download from.
     */
    fetchFile(category?: Nullable<NbCategories>): Promise<NbBufferResponse>;
    /**
     * Fetch multiple assets with their metadata (if available).
     *
     * Refer to the documentation for more details: https://docs.nekos.best/api/endpoints.html#get-categoryamountx
     *
     * @param category Category of assets. Set to `null` to pick a random category.
     * @param amount The amount of assets. Refer to the documentation for the limits.
     */
    fetch(category: Nullable<NbCategories>, amount: number): Promise<NbResponse>;
    /**
     * Search for assets.
     *
     * Refer to the documentation for more details: https://docs.nekos.best/api/endpoints.html#get-searchqueryxtypexcategoryxamountx
     *
     * @param query Search query.
     * @param category Category of assets. Set to `null` to pick a random category.
     * @param amount The amount of assets. Refer to the documentation for the limits.
     */
    search(query: string, category?: Nullable<NbCategories>, amount?: number): Promise<NbResponse>;
}
export default Client;