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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,157 @@ const { SwapRouter } = require('@uniswap/universal-router-sdk') const { TradeType, Ether, Token, CurrencyAmount, Percent } = require('@uniswap/sdk-core') const { Trade: V2Trade } = require('@uniswap/v2-sdk') const { Pool, nearestUsableTick, TickMath, TICK_SPACINGS, FeeAmount, Trade: V3Trade, Route: RouteV3 } = require('@uniswap/v3-sdk') const { MixedRouteTrade, Trade: RouterTrade } = require('@uniswap/router-sdk') const IUniswapV3Pool = require('@uniswap/v3-core/artifacts/contracts/UniswapV3Pool.sol/UniswapV3Pool.json') const JSBI = require('jsbi') const erc20Abi = require('../abis/erc20.json') const hardhat = require("hardhat"); const provider = hardhat.ethers.provider; const ETHER = Ether.onChain(1) const WETH = new Token(1, '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2', 18, 'WETH', 'Wrapped Ether') const USDC = new Token(1, '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48', 6, 'USDC', 'USD Coin') const wethContract = new hardhat.ethers.Contract(WETH.address, erc20Abi, provider) const usdcContract = new hardhat.ethers.Contract(USDC.address, erc20Abi, provider) async function getPool(tokenA, tokenB, feeAmount) { const [token0, token1] = tokenA.sortsBefore(tokenB) ? [tokenA, tokenB] : [tokenB, tokenA] const poolAddress = Pool.getAddress(token0, token1, feeAmount) const contract = new hardhat.ethers.Contract(poolAddress, IUniswapV3Pool.abi, provider) let liquidity = await contract.liquidity() let { sqrtPriceX96, tick } = await contract.slot0() liquidity = JSBI.BigInt(liquidity.toString()) sqrtPriceX96 = JSBI.BigInt(sqrtPriceX96.toString()) return new Pool(token0, token1, feeAmount, sqrtPriceX96, liquidity, tick, [ { index: nearestUsableTick(TickMath.MIN_TICK, TICK_SPACINGS[feeAmount]), liquidityNet: liquidity, liquidityGross: liquidity, }, { index: nearestUsableTick(TickMath.MAX_TICK, TICK_SPACINGS[feeAmount]), liquidityNet: JSBI.multiply(liquidity, JSBI.BigInt('-1')), liquidityGross: liquidity, }, ]) } function swapOptions(options) { return Object.assign( { slippageTolerance: new Percent(5, 100), recipient: RECIPIENT, }, options ) } function buildTrade(trades) { return new RouterTrade({ v2Routes: trades .filter((trade) => trade instanceof V2Trade) .map((trade) => ({ routev2: trade.route, inputAmount: trade.inputAmount, outputAmount: trade.outputAmount, })), v3Routes: trades .filter((trade) => trade instanceof V3Trade) .map((trade) => ({ routev3: trade.route, inputAmount: trade.inputAmount, outputAmount: trade.outputAmount, })), mixedRoutes: trades .filter((trade) => trade instanceof MixedRouteTrade) .map((trade) => ({ mixedRoute: trade.route, inputAmount: trade.inputAmount, outputAmount: trade.outputAmount, })), tradeType: trades[0].tradeType, }) } const RECIPIENT = '0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B' async function main() { const signer = await hardhat.ethers.getImpersonatedSigner(RECIPIENT); const WETH_USDC_V3 = await getPool(WETH, USDC, FeeAmount.MEDIUM) const inputEther = hardhat.ethers.utils.parseEther('1').toString() const trade = await V3Trade.fromRoute( new RouteV3([WETH_USDC_V3], ETHER, USDC), CurrencyAmount.fromRawAmount(ETHER, inputEther), TradeType.EXACT_INPUT ) const routerTrade = buildTrade([trade]) const opts = swapOptions({}) const params = SwapRouter.swapERC20CallParameters(routerTrade, opts) let ethBalance let wethBalance let usdcBalance ethBalance = await provider.getBalance(RECIPIENT) wethBalance = await wethContract.balanceOf(RECIPIENT) usdcBalance = await usdcContract.balanceOf(RECIPIENT) console.log('---------------------------- BEFORE') console.log('ethBalance', hardhat.ethers.utils.formatUnits(ethBalance, 18)) console.log('wethBalance', hardhat.ethers.utils.formatUnits(wethBalance, 18)) console.log('usdcBalance', hardhat.ethers.utils.formatUnits(usdcBalance, 6)) const tx = await signer.sendTransaction({ data: params.calldata, to: '0xEf1c6E67703c7BD7107eed8303Fbe6EC2554BF6B', value: params.value, from: RECIPIENT, }) const receipt = await tx.wait() console.log('---------------------------- SUCCESS?') console.log('status', receipt.status) ethBalance = await provider.getBalance(RECIPIENT) wethBalance = await wethContract.balanceOf(RECIPIENT) usdcBalance = await usdcContract.balanceOf(RECIPIENT) console.log('---------------------------- AFTER') console.log('ethBalance', hardhat.ethers.utils.formatUnits(ethBalance, 18)) console.log('wethBalance', hardhat.ethers.utils.formatUnits(wethBalance, 18)) console.log('usdcBalance', hardhat.ethers.utils.formatUnits(usdcBalance, 6)) } /* node scripts/01_simpleSwap.js */ main() .then(() => process.exit(0)) .catch((error) => { console.error(error); process.exit(1); }); This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. 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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,277 @@ [ { "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" } ] This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,13 @@ require("@nomiclabs/hardhat-waffle"); /** @type import('hardhat/config').HardhatUserConfig */ module.exports = { solidity: "0.8.18", networks: { hardhat: { forking: { url: "https://mainnet.infura.io/v3/<YOUR_KEY>" } } } }; This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,26 @@ { "name": "tutorials", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "@nomiclabs/hardhat-ethers": "^2.2.3", "@nomiclabs/hardhat-waffle": "^2.0.6", "@types/sinon-chai": "^3.2.9", "@uniswap/sdk": "^3.0.3", "@uniswap/sdk-core": "^4.0.2", "@uniswap/smart-order-router": "^3.13.2-hotfix2", "@uniswap/v3-core": "^1.0.1", "@uniswap/v3-periphery": "^1.4.3", "@uniswap/v3-sdk": "^3.9.0", "ethereum-waffle": "^4.0.10", "ethers": "^5.7.2", "hardhat": "^2.14.0" } }