/**
 * @module utils.zeroExExchange
 */
import { EthAddress } from '../types';
import { SellAction } from '../actions/basic';
/**
 * Gets price estimate for selling a specific amount.
 * Example: getBestExchangePrice('1', 'ETH', 'DAI') - swapping 1 ETH for some DAI
 *
 * @param sellAmount amount of sellToken (not in wei)
 * @param sellToken Symbol for asset being sold
 * @param buyToken Symbol for asset being bought
 * @returns price of sellToken in buyToken
 */
export declare const estimateSellPrice: (sellAmount: string, sellToken: string, buyToken: string) => Promise<string>;
/**
 * Gets price estimate for buying a specific amount.
 * Example: estimateBuyPrice('1000', 'DAI', 'ETH') - swapping 1000 DAI for some ETH
 *
 * @param buyAmount amount of buyToken (not in wei)
 * @param buyToken Symbol for asset being bought
 * @param sellToken Symbol for asset being sold
 * @returns price of sellToken in buyToken
 */
export declare const estimateBuyPrice: (buyAmount: string, buyToken: string, sellToken: string) => Promise<string>;
/**
 * Fetches prices and creates order ready to be passed to transaction.
 * This should only be called when before sending tx, not to be used for just querying the price.
 * For that purpose, the estimateSellPrice method can be used.
 *
 * @param sellAmount Amount of asset being sold ('1.5')
 * @param sellToken Symbol for asset being sold ('ETH')
 * @param buyToken Symbol for asset being bought ('DAI')
 * @param expectedPrice Price received from estimatePrice (so minPrice can be calculated based on what user saw)
 * @param acceptedSlippagePercent Slippage percentage tolerated [0-100]
 * @param fromAccount Withdraw funds from this addr
 * @param toAccount Send funds to this addr
 */
export declare const createSellAction: (sellAmount: string, sellToken: string, buyToken: string, expectedPrice: string, acceptedSlippagePercent: string | number, fromAccount: EthAddress, toAccount: EthAddress) => Promise<SellAction>;