import { LimitTradeParametersFromQuote, PrivateKey, TradeParameters } from './types';
import { OrderQuoteResponse, QuoteAmountsAndCosts } from '../order-book';
import { Signer } from 'ethers';
import { type ExternalProvider } from '@ethersproject/providers';
export declare function swapParamsToLimitOrderParams(params: TradeParameters, quoteResponse: OrderQuoteResponse): LimitTradeParametersFromQuote;
export declare function getIsEthFlowOrder(params: {
    sellToken: string;
}): boolean;
export declare function getSigner(signer: Signer | ExternalProvider | PrivateKey): Signer;
/**
 * Returns the gas value plus a margin for unexpected or variable gas costs (20%)
 * @param value the gas value to pad
 */
export declare function calculateGasMargin(value: bigint): bigint;
export declare function mapQuoteAmountsAndCosts<T, R>(value: QuoteAmountsAndCosts<T>, mapper: (value: T) => R): QuoteAmountsAndCosts<R>;
/**
 * Set sell token to the initial one
 * Because for ETH-flow orders we do quote requests with wrapped token
 */
export declare function getTradeParametersAfterQuote({ quoteParameters, orderParameters, }: {
    quoteParameters: TradeParameters;
    orderParameters: TradeParameters;
}): TradeParameters;