price_impact( ) {
        const poolAddress = '0x58F876857a02D6762E0101bb5C46A8c1ED44Dc16';   
        const poolContract = new ethers.Contract(poolAddress,   ['function getReserves() public view returns (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast)'], signer);
 
        poolContract['getReserves']()
        .then((reserves: { _reserve0: ethers.BigNumberish; _reserve1: ethers.BigNumberish; }) => {
            let reserve_a_initial = parseFloat(utils.formatUnits(reserves._reserve0));
            let reserve_b_initial = parseFloat(utils.formatUnits(reserves._reserve1));
            console.log(`busd in pool: ${reserve_a_initial}`);
            console.log(`busd in pool: ${reserve_b_initial}`);
    
            const fee = 0.025;
            let max_price_impact = 0.0001;
     
            let amount_traded_bnb = reserve_a_initial * max_price_impact / ((1 - max_price_impact)*(1 - fee));
            let amount_traded_busd = reserve_b_initial * max_price_impact / ((1 - max_price_impact)*(1 - fee));
            console.log(`Given a max price impact of ${max_price_impact*100}%, the max amount of bnb tradeable is ${amount_traded_bnb}`);
            console.log(`Given a max price impact of ${max_price_impact*100}%, the max amount of busd tradeable is ${amount_traded_busd}`);
    
            let amountInBNB = amount_traded_bnb * (1 - fee);
            let amountInBUSD = amount_traded_busd * (1 - fee);
            let price_impact_trade_cake = amountInBNB / (reserve_a_initial + amountInBNB);
            let price_impact_trade_usdt = amountInBUSD / (reserve_b_initial + amountInBUSD);
            console.log(`Price impact when trading ${amount_traded_bnb} bnb: ${price_impact_trade_cake*100}%`);
            console.log(`Price impact when trading ${amount_traded_busd} busd: ${price_impact_trade_usdt * 100}%`);
            let price = amount_traded_busd / amount_traded_bnb;
            console.log(price*4);
            
                    
        }).catch(console.error); }