export declare class StableMath {
    static _AMP_PRECISION: bigint;
    static _calculateInvariant(amplificationParameter: bigint, balances: bigint[], roundUp: boolean): bigint;
    static _calcInGivenOut(amplificationParameter: bigint, balances: bigint[], tokenIndexIn: number, tokenIndexOut: number, tokenAmountsOut: bigint[]): bigint[];
    static _calcOutGivenIn(amplificationParameter: bigint, balances: bigint[], tokenIndexIn: number, tokenIndexOut: number, tokenAmountsIn: bigint[]): bigint[];
    static _getTokenBalanceGivenInvariantAndAllOtherBalances(amplificationParameter: bigint, balances: bigint[], invariant: bigint, tokenIndex: number): bigint;
}