import { AxiosRequestConfig } from 'axios';
import { IDouyinPayV1Config } from './douyin.interface';
import { IPayInfoByOutOrderNoOptions } from './douyin-pay-v1.interface';
export declare class DouyinPayV1 {
    constructor(config: IDouyinPayV1Config);
    readonly apiUrl: string;
    readonly sandboxApiUrl: string;
    readonly orderSyncApiUrl = "https://developer.toutiao.com";
    readonly requestNotNeedSignParams: string[];
    private salt;
    private token;
    private env;
    private appid;
    request(config: AxiosRequestConfig): Promise<any>;
    private toMd5;
    requestSign(options: Record<string, any>): string;
    callbackSign(options: Record<string, any>): boolean;
    prepay(options: Record<string, any>): Promise<Record<string, any>>;
    payInfoByOutOrderNo(options: IPayInfoByOutOrderNoOptions): Promise<Record<string, any>>;
    orderSync(options: Record<string, any>): Promise<Record<string, any>>;
}