import { HttpService } from '@nestjs/axios';
import { WechatPayModuleOptions } from '../interfaces/options.interface';
import { PlaceOrderMpParams } from '../interfaces/params/mp/place-order.mp.params.interface';
import { PlaceOrderMpResponse } from '../interfaces/response/mp/place-order.mp.response.interface';
import { AuthUtil } from '../utils/auth.util';
import { DateUtil } from '../utils/date.util';
import { SignUtil } from '../utils/sign.util';
export declare class WechatPayMpService {
    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 小程序支付下单参数
     * @returns 统一下单结果
     */
    placeOrder(params: PlaceOrderMpParams): Promise<PlaceOrderMpResponse>;
}