import { Contract } from '@ethersproject/contracts';
import { GetBestPoolAndOutputParams, GetBestPoolAndOutputResult, GetExchangeRoutingInfoParams, GetExchangeRoutingInfoResults } from './types';
export declare const MAINNET_CONTRACTS: {
    readonly addressProvider: "0x0000000022d53366457f9d5e68ec105046fc4383";
    readonly router: "0xfA9a30350048B2BF66865ee20363067c66f67e58";
};
/**
 * Returns the best pool to route a trade through using Curve Registry Exchange contract.
 * The contract is only available on Mainnet.
 * @returns the best pool to route the trade through and expected receive amount
 */
export declare function getBestCurvePoolAndOutput({ amountIn, tokenInAddress, tokenOutAddress, chainId, }: GetBestPoolAndOutputParams): Promise<GetBestPoolAndOutputResult | undefined>;
/**
 * Returns Curve's Smart Router contract instance
 */
export declare function getRouter(): Contract;
/**
 * Returns routing information from the Curve Smart Router. The router is only available on Mainnet.
 * The contract calls reverts if there no route is found
 * @returns the routing information
 */
export declare function getExchangeRoutingInfo({ amountIn, tokenInAddress, tokenOutAddress, }: GetExchangeRoutingInfoParams): Promise<GetExchangeRoutingInfoResults | undefined>;
/**
 * @description Returns an instance of the Curve DAI Exchange contract. This contract is only available on Gnosis Chain.
 * @returns the DAI Exchange contract instance
 */
export declare function getCurveDAIExchangeContract(): Contract;