Hello everyone
I'm trying to create a pool for my erc20 token (SwapToken) / wETH on sepolia just to figure out how things are working on uniswap V3. I'm having a hard time calculating the sqrtPriceX96 for createAndInitializePoolIfNecessary function in NonfungiblePositionManager contract.
the ratio that i'm going to have in the pool is : 100 SWAP / 0.1 WETH
what is the calculation process of sqrtPriceX96 in javascript? ** I also appreciate it if you check my code and correct me if i have done anything wrong
My code :
const { ethers } = require("ethers"); require("dotenv").config({ path: "../.env" }); const providerUrl = process.env.SEPOLIA_RPC_URL; const privateKey = process.env.SEPOLIA_PRIVATE_KEY; const provider = new ethers.providers.JsonRpcProvider(providerUrl); const wallet = new ethers.Wallet(privateKey, provider); const swapTokenAbi = require("./abi/SwapTokenABI.json"); const wEthAbi = require("./abi/wEthAbi.json"); const positionManagerAbi = require("./abi/NonfungiblePositionManagerABI.json"); const swapTokenAddress = "0x51ffBe766d3b7B9Aa670CaBa326231A053210983"; const wEthAddress = "0xfFf9976782d46CC05630D1f6eBAb18b2324d6B14"; const positionManagerAddress = "0x1238536071E1c677A632429e3655c799b22cDA52"; const swapTokenContract = new ethers.Contract( swapTokenAddress, swapTokenAbi, wallet ); const wEthContract = new ethers.Contract(wEthAddress, wEthAbi, wallet); const positionManagerContract = new ethers.Contract( positionManagerAddress, positionManagerAbi, wallet ); const fee = 3000; const swapTokenAmount = 100; const wEthAmount = 0.1; const conversion = swapTokenAmount / wEthAmount; const sqrtPriceX96 = "???" async function createPool() { let approveTx = await swapTokenContract.approve( positionManagerAddress, ethers.utils.parseEther(swapTokenAmount.toString()) ); console.log(` Swap approve transaction hash : ${approveTx.hash}`); let approveReceipt = await approveTx.wait(); console.log(` Transaction confirmed in block ${approveReceipt.blockNumber}`); approveTx = await wEthContract.approve( positionManagerAddress, ethers.utils.parseEther(wEthAmount.toString()) ); console.log(` WETH approve transaction hash : ${approveTx.hash}`); approveReceipt = await approveTx.wait(); console.log(` Transaction confirmed in block ${approveReceipt.blockNumber}`); const params = { token0: swapTokenAddress, token1: wEthAddress, fee: fee, sqrtPriceX96: "", }; const createPoolTx = await positionManagerContract.createAndInitializePoolIfNecessary(params); console.log(` Create Pool transaction hash : ${approveTx.hash}`); const createPoolReceipt = await approveTx.wait(); console.log( ` Create Pool transaction confirmed in block ${createPoolReceipt.blockNumber}` ); } 