import { SuiClient } from '@mysten/sui/client';
import { Transaction } from '@mysten/sui/transactions';
import { Coin } from '../../../core';
import { Route } from '../Route';
interface PythConfig {
    priceServiceEndpoint: string;
    pythStateObjectId: string;
    wormholeStateObjectId: string;
}
interface PythHelperConstructorOptions {
    client: SuiClient;
    pythConfig: PythConfig;
}
export declare class PythHelper {
    private _pythPriceServiceConnection;
    private _pythClient;
    private static _instances;
    constructor(options: PythHelperConstructorOptions);
    static getInstance(options: PythHelperConstructorOptions): PythHelper;
    updatePythPriceFeedsIfNecessary(routes: Route<Coin, Coin>[], tx: Transaction): Promise<{
        [key: string]: string;
    }>;
}
export {};