/// <reference types="node" />
import { ExtendOptions } from 'got';
import { WeChatPaymentAPIConfig } from './config';
export interface GlobalAccessTokenResult {
    access_token: string;
    refresh_token?: string;
    expires_in?: number;
}
/**
 * Generate digest hash based on the content
 * @param {string} content content to be digested
 * @param {string=} algorithm digest algorithm, default 'sha1'
 * @return {string}
 */
export declare function genHash(content: string, algorithm: string): string;
/**
 * Generate SHA1 hash
 */
export declare function genSHA1(content: string): string;
/**
 * Generate MD5 hash
 */
export declare function genMD5(content: string): string;
export declare function genHmacSHA256(content: string, key: string): string;
/**
 * Parse the object to query string without encoding based on the ascii key order
 * @param {object} args search params in object
 * @param {boolean} noLowerCase
 * @return {string}
 */
export declare function paramsToString(args: Record<string, unknown>, noLowerCase?: boolean): string;
/**
 * Send the request to wechat server
 * @param {string} url
 * @param {object} options custom request options
 */
export declare function sendWechatRequest(url: string, options: ExtendOptions): Promise<Record<string, unknown>>;
/**
 * Send the payment request to wechat server
 * @param {string} url
 * @param {object} options custom request options
 */
export declare function sendWechatPaymentRequest(url: string, options: ExtendOptions): Promise<string>;
/**
 * Create nonce string
 * @return {string}
 */
export declare function nonceStr(): string;
/**
 * Create timestamp string to seconds
 */
export declare function timestamp(): string;
/**
 * Check if date is expired
 * @param {Date|string} modifyDate
 * @param {number=} interval milliseconds custom expires in
 * @return {boolean}
 */
export declare function isExpired(modifyDate: Date | string, interval?: number): boolean;
/**
 * Get global access token from wechat server
 * @param {string} appId
 * @param {string} appSecret
 * @param {string} accessTokenUrl
 */
export declare function getGlobalAccessToken(appId: string, appSecret: string, accessTokenUrl: string): Promise<GlobalAccessTokenResult>;
/**
 * Parse the xml data returned from wechat server
 * @return {Promise} result promise
 */
export declare function parseXML(xmlData: string): Promise<Record<string, unknown>>;
/**
 * Build xml data string from the JSON object
 * @param {object} objData - object to xml string
 * @return {Promise}
 */
export declare function buildXML(objData: Record<string, unknown>): Promise<string>;
/**
 * Simple Date formatter
 * @param {(string|Date)=} date
 * @param {string=} format
 * @return {string}
 */
export declare function simpleDate(date?: string | Date, format?: string): string;
/**
 * Add "/sandboxnew" for payment apis to for testing
 * @param paymentUrls
 */
export declare function paymentUrlsWithSandBox(paymentUrls: WeChatPaymentAPIConfig): WeChatPaymentAPIConfig;
export declare function createBuffer(str: string, encoding?: BufferEncoding): Buffer;
export declare function createBufferFromBase64(base64Str: string): Buffer;