import { HttpService } from '@nestjs/axios';
import { WechatPayModuleOptions } from '../interfaces/options.interface';
import { PlaceOrderJSAPIParams } from '../interfaces/params';
import { PlaceOrderJSAPIResponse } from '../interfaces/response/jsapi/place-order.mp.response.interface';
import { RefundJSAPIParams } from '../interfaces/params';
import { RefundJSAPIResponse } from '../interfaces/response/jsapi/refund.mp.response.interface';
import { AuthUtil } from '../utils/auth.util';
import { DateUtil } from '../utils/date.util';
import { SignUtil } from '../utils/sign.util';
export declare class WechatPayJSAPIService {
    private readonly options;
    private readonly httpService;
    private readonly authUtil;
    private readonly signUtil;
    private readonly dateUtil;
    constructor(options: WechatPayModuleOptions, httpService: HttpService, authUtil: AuthUtil, signUtil: SignUtil, dateUtil: DateUtil);
    /**
     * 统一下单接口
     * @param params JSAPI支付下单参数
     * @returns 统一下单结果
     */
    placeOrder(params: PlaceOrderJSAPIParams): Promise<PlaceOrderJSAPIResponse>;
    /**
     * 退款接口
     * @param params 退款参数
     */
    refund(params: RefundJSAPIParams): Promise<RefundJSAPIResponse>;
}