import type { AxiosInstance } from 'axios';
import type { ClientOptions, RequestOptions, XKCDResultWithData } from './Interfaces';
export declare class XKCDAPI {
    protected readonly apiClient: AxiosInstance;
    protected readonly options: ClientOptions;
    private readonly JSON_INFO_FILE;
    private readonly lowestIndex;
    constructor(apiClient: AxiosInstance, options: ClientOptions);
    /**
     * Get a comic by index.
     * @param index Index number
     * @param options Request options
     */
    getByIndex(index: number, options: {
        withData: true;
    }): Promise<XKCDResultWithData>;
    getByIndex(index: number, options?: RequestOptions): Promise<XKCDResultWithData>;
    /**
     * Get the latest comic.
     * @param options Request options
     */
    getLatest(options: {
        withData: true;
    }): Promise<XKCDResultWithData>;
    getLatest(options?: RequestOptions): Promise<XKCDResultWithData>;
    /**
     * Get a random comic.
     * @param options Request options
     */
    getRandom(options: {
        withData: true;
    }): Promise<XKCDResultWithData>;
    getRandom(options?: RequestOptions): Promise<XKCDResultWithData>;
    private getImage;
}