Get ETH and SX prices from Uniswap v3

gistfile1.js

const rpcUrl = CHAIN_CONFIGS[1].rpcUrls[0];
const provider = new providers.StaticJsonRpcProvider(rpcUrl, 1);

const UniswapV3Pool = await import('../../config/abi/UniswapV3Pool.json');
const sxUsdcPoolAddress = "0xCb3b931E1e02C26399aCc651bFD9c8c4385EECd0";
const ethUsdcPoolAddress = "0x8ad599c3a0ff1de082011efddc58f1908eb6e6d8";

const sxUsdcPoolContract = new Contract(sxUsdcPoolAddress, UniswapV3Pool.abi, provider);
const ethUsdcPoolContract = new Contract(ethUsdcPoolAddress, UniswapV3Pool.abi, provider);

const [sxSlot0, ethSlot0] = await Promise.all([
  sxUsdcPoolContract.slot0(),
  ethUsdcPoolContract.slot0()
]);

// Calculate price for SX/USDC
const sqrtPriceX96SX = sxSlot0.sqrtPriceX96;
const priceX96SquaredSX = (sqrtPriceX96SX ** 2) / (2 ** 192);
const adjustedPriceSX = priceX96SquaredSX * (10 ** 6) / (10 ** 18); // 6 decimals for USDC, 18 decimals for SX
const priceOfSXInUSDC = 1 / adjustedPriceSX;

// Calculate price for ETH/USDC
const sqrtPriceX96ETH = ethSlot0.sqrtPriceX96;
const priceX96SquaredETH = (sqrtPriceX96ETH ** 2) / (2 ** 192);
const adjustedPriceETH = priceX96SquaredETH * (10 ** 6) / (10 ** 18); // 6 decimals for USDC, 18 decimals for ETH
const priceOfEthInUSDC = 1 / adjustedPriceETH;