export type SwapExactInputParams = {
    amount: string;
    fromSymbol: string;
    toSymbol: string;
    slippage?: number;
};
export declare const swapExactInput: ({ amount, fromSymbol, toSymbol, slippage, }: {
    amount: string;
    fromSymbol: string;
    toSymbol: string;
    slippage?: number;
}) => Promise<string>;