import JSBI from 'jsbi';
import { SwapResult, SwapExactOutputResult } from '../utils';
import { Fraction } from '..';
export declare class TokenSwapConstantProduct {
    private traderFee;
    private ownerFee;
    private feesOnInput;
    constructor(traderFee: Fraction, ownerFee: Fraction, feesOnInput?: boolean);
    exchange(tokenAmounts: JSBI[], inputTradeAmount: JSBI, outputIndex: number): SwapResult;
    exchangeForExactOutput(tokenAmounts: JSBI[], outputTradeAmount: JSBI, outputIndex: number): SwapExactOutputResult;
    private getPriceImpact;
    private getPriceImpactExactOutput;
    private getFees;
    private getExpectedOutputAmount;
    private getExpectedOutputAmountWithNoSlippage;
    private getExpectedInputAmountWithNoSlippage;
    private getAmountLessFees;
    private getAmountPlusFees;
    private getOutputAmount;
    private getInputAmount;
    getInvariant(tokenAmounts: JSBI[]): JSBI;
}