Add liquidity to Uniswap V3

.env

INFURA_URL_TESTNET=
WALLET_ADDRESS=
WALLET_SECRET=

abi.json

[
  {
    "inputs": [],
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "owner",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "spender",
        "type": "address"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "value",
        "type": "uint256"
      }
    ],
    "name": "Approval",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "from",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "to",
        "type": "address"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "value",
        "type": "uint256"
      }
    ],
    "name": "Transfer",
    "type": "event"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "owner",
        "type": "address"
      },
      {
        "internalType": "address",
        "name": "spender",
        "type": "address"
      }
    ],
    "name": "allowance",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "spender",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "approve",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "account",
        "type": "address"
      }
    ],
    "name": "balanceOf",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "decimals",
    "outputs": [
      {
        "internalType": "uint8",
        "name": "",
        "type": "uint8"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "spender",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "subtractedValue",
        "type": "uint256"
      }
    ],
    "name": "decreaseAllowance",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "spender",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "addedValue",
        "type": "uint256"
      }
    ],
    "name": "increaseAllowance",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "name",
    "outputs": [
      {
        "internalType": "string",
        "name": "",
        "type": "string"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "symbol",
    "outputs": [
      {
        "internalType": "string",
        "name": "",
        "type": "string"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "totalSupply",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "to",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "transfer",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "from",
        "type": "address"
      },
      {
        "internalType": "address",
        "name": "to",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "transferFrom",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  }
]

addLiquidity.js

const { ethers } = require('ethers')
const { Token } = require('@uniswap/sdk-core')
const { Pool, Position, nearestUsableTick } = require('@uniswap/v3-sdk')
const { abi: IUniswapV3PoolABI }  = require("@uniswap/v3-core/artifacts/contracts/interfaces/IUniswapV3Pool.sol/IUniswapV3Pool.json")
const { abi: INonfungiblePositionManagerABI } = require('@uniswap/v3-periphery/artifacts/contracts/interfaces/INonfungiblePositionManager.sol/INonfungiblePositionManager.json')
const ERC20ABI = require('./abi.json')

require('dotenv').config()
const INFURA_URL_TESTNET = process.env.INFURA_URL_TESTNET
const WALLET_ADDRESS = process.env.WALLET_ADDRESS
const WALLET_SECRET = process.env.WALLET_SECRET

const poolAddress = "0x4D7C363DED4B3b4e1F954494d2Bc3955e49699cC" // UNI/WETH on Ropsten
const positionManagerAddress = "0xC36442b4a4522E871399CD717aBDD847Ab11FE88" // NonfungiblePositionManager

const provider = new ethers.providers.JsonRpcProvider(INFURA_URL_TESTNET)

const name0 = 'Wrapped Ether'
const symbol0 = 'WETH'
const decimals0 = 18
const address0 = '0x1f9840a85d5af5bf1d1762f925bdaddc4201f984'

const name1 = 'Uniswap Token'
const symbol1 = 'UNI'
const decimals1 = 18
const address1 = '0xc778417e063141139fce010982780140aa0cd5ab'

const chainId = 3 // Ropsten
const WethToken = new Token(chainId, address0, decimals0, symbol0, name0)
const UniToken = new Token(chainId, address1, decimals1, symbol1, name1)

const nonfungiblePositionManagerContract = new ethers.Contract(
  positionManagerAddress,
  INonfungiblePositionManagerABI,
  provider
)
const poolContract = new ethers.Contract(
  poolAddress,
  IUniswapV3PoolABI,
  provider
)

async function getPoolData(poolContract) {
  const [tickSpacing, fee, liquidity, slot0] = await Promise.all([
    poolContract.tickSpacing(),
    poolContract.fee(),
    poolContract.liquidity(),
    poolContract.slot0(),
  ])

  return {
    tickSpacing: tickSpacing,
    fee: fee,
    liquidity: liquidity,
    sqrtPriceX96: slot0[0],
    tick: slot0[1],
  }
}


async function main() {
  const poolData = await getPoolData(poolContract)

  const WETH_UNI_POOL = new Pool(
    WethToken,
    UniToken,
    poolData.fee,
    poolData.sqrtPriceX96.toString(),
    poolData.liquidity.toString(),
    poolData.tick
  )

  const position = new Position({
    pool: WETH_UNI_POOL,
    liquidity: ethers.utils.parseUnits('0.01', 18),
    tickLower: nearestUsableTick(poolData.tick, poolData.tickSpacing) - poolData.tickSpacing * 2,
    tickUpper: nearestUsableTick(poolData.tick, poolData.tickSpacing) + poolData.tickSpacing * 2,
  })

  const wallet = new ethers.Wallet(WALLET_SECRET)
  const connectedWallet = wallet.connect(provider)

  const approvalAmount = ethers.utils.parseUnits('10', 18).toString()
  const tokenContract0 = new ethers.Contract(address0, ERC20ABI, provider)
  await tokenContract0.connect(connectedWallet).approve(
    positionManagerAddress,
    approvalAmount
  )
  const tokenContract1 = new ethers.Contract(address1, ERC20ABI, provider)
  await tokenContract1.connect(connectedWallet).approve(
    positionManagerAddress,
    approvalAmount
  )

  const { amount0: amount0Desired, amount1: amount1Desired} = position.mintAmounts
  // mintAmountsWithSlippage

  params = {
    token0: address0,
    token1: address1,
    fee: poolData.fee,
    tickLower: nearestUsableTick(poolData.tick, poolData.tickSpacing) - poolData.tickSpacing * 2,
    tickUpper: nearestUsableTick(poolData.tick, poolData.tickSpacing) + poolData.tickSpacing * 2,
    amount0Desired: amount0Desired.toString(),
    amount1Desired: amount1Desired.toString(),
    amount0Min: amount0Desired.toString(),
    amount1Min: amount1Desired.toString(),
    recipient: WALLET_ADDRESS,
    deadline: Math.floor(Date.now() / 1000) + (60 * 10)
  }

  nonfungiblePositionManagerContract.connect(connectedWallet).mint(
    params,
    { gasLimit: ethers.utils.hexlify(1000000) }
  ).then((res) => {
    console.log(res)
  })
}

main()

package.json

{
  "name": "add-liquidity-to-uniswap",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@uniswap/sdk-core": "^3.0.1",
    "@uniswap/v3-sdk": "^3.8.2",
    "dotenv": "^16.0.0",
    "ethers": "^5.6.4"
  }
}