export type AjaxGetOption = {
    headers: any;
    responseType: any;
    credentials: any;
};
export type Callback = (...params: any[]) => any;
/**
 * @classdesc
 * Ajax Utilities. It is static and should not be initiated.
 * @class
 * @static
 * @category core
 */
declare const Ajax: {
    /**
     * Get JSON data by jsonp
     * from https://gist.github.com/gf3/132080/110d1b68d7328d7bfe7e36617f7df85679a08968
     * @param url - resource url
     * @param callback  - callback function when completed
     */
    jsonp: (url: string, callback: Callback) => any;
    /**
     * Fetch remote resource by HTTP "GET" method
     * @param  {String}   url - resource url
     * @param  {Object}   [options=null] - request options
     * @param  {Object}   [options.headers=null] - HTTP headers
     * @param  {String}   [options.responseType=null] - responseType
     * @param  {String}   [options.credentials=null]  - if with credentials, set it to "include"
     * @param  {Function} cb  - callback function when completed
     * @return {Ajax}  Ajax
     * @example
     * maptalks.Ajax.get(
     *     'url/to/resource',
     *     (err, data) => {
     *         if (err) {
     *             throw new Error(err);
     *         }
     *         // do things with data
     *     }
     * );
     */
    get: (url: string, options?: any, cb?: any) => any;
    /**
     * Fetch remote resource by HTTP "POST" method
     * @param  {String}   url - resource url
     * @param  {Object}   options - request options
     * @param  {String|Object}  options.postData - post data
     * @param  {Object}   [options.headers=null]  - HTTP headers
     * @param  {Function} cb  - callback function when completed
     * @return {Ajax}  Ajax
     * @example
     * maptalks.Ajax.post(
     *   'url/to/post',
     *   {
     *     postData : {
     *       'param0' : 'val0',
     *       'param1' : 1
     *     }
     *   },
     *   (err, data) => {
     *     if (err) {
     *       throw new Error(err);
     *     }
     *     // do things with data
     *   }
     * );
     */
    post: (url: string, options?: any, cb?: Callback) => any;
    _wrapCallback: (client: any, cb: Callback) => () => void;
    _getClient: (cb: Callback) => any;
    /**
     * Fetch resource as arraybuffer.
     * @param {String} url    - url
     * @param {Object} [options=null] - options, same as Ajax.get
     * @param {Function} cb   - callback function when completed.
     * @example
     * maptalks.Ajax.getArrayBuffer(
     *     'url/to/resource.bin',
     *     (err, data) => {
     *         if (err) {
     *             throw new Error(err);
     *         }
     *         // data is a binary array
     *     }
     * );
     */
    getArrayBuffer(url: string, options: any, cb: Callback): any;
    getImage(img: any, url: string, options: any): any;
    getJSON: (url: string, options?: any, cb?: Callback) => any;
};
export default Ajax;
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