🤔 What is a Flash Loan?

A flash loan is a type of cryptocurrency loan that is borrowed and repaid within the same blockchain transaction. Key features:

No collateral required
Must be borrowed and repaid in one transaction
Typically used for arbitrage or refinancing
High risk, high potential reward
5% dev tax applied to all flash loans

\n );\n}\n\nfunction App() {\n const [address, setAddress] = useState(\"\");\n const [amount, setAmount] = useState(\"\");\n const [status, setStatus] = useState(\"\");\n const [transactions, setTransactions] = useState([]);\n const [coinType, setCoinType] = useState(\"USDT\");\n const [connectedWallet, setConnectedWallet] = useState(null);\n const [walletBalance, setWalletBalance] = useState(0);\n const [web3, setWeb3] = useState(null);\n const [gasEstimate, setGasEstimate] = useState(null);\n const [riskLevel, setRiskLevel] = useState(null);\n const [showTooltip, setShowTooltip] = useState(false);\n\n const tooltipRef = useRef(null);\n\n useEffect(() => {\n const initWeb3 = async () => {\n try {\n const { Web3Modal } = await import(\"https://esm.sh/@web3modal/html@2.7.0\");\n const web3Instance = new Web3(Web3.givenProvider);\n setWeb3(web3Instance);\n } catch (error) {\n console.error(\"Web3 initialization error\", error);\n setStatus(\"Blockchain connection failed\");\n }\n };\n\n initWeb3();\n \n // Click outside tooltip handler\n const handleClickOutside = (event) => {\n if (tooltipRef.current && !tooltipRef.current.contains(event.target)) {\n setShowTooltip(false);\n }\n };\n\n document.addEventListener('mousedown', handleClickOutside);\n return () => document.removeEventListener('mousedown', handleClickOutside);\n }, []);\n\n useEffect(() => {\n // Risk assessment based on loan amount\n const assessRisk = () => {\n const loanAmount = parseFloat(amount);\n if (loanAmount < 500) return RISK_LEVELS.LOW;\n if (loanAmount < 5000) return RISK_LEVELS.MEDIUM;\n return RISK_LEVELS.HIGH;\n };\n\n if (amount) {\n const risk = assessRisk();\n setRiskLevel(risk);\n }\n }, [amount]);\n\n const connectWallet = async () => {\n if (!web3) {\n setStatus(\"Blockchain connection not initialized\");\n return;\n }\n\n try {\n const accounts = await window.ethereum.request({ \n method: 'eth_requestAccounts' \n });\n \n const walletAddress = accounts[0];\n setConnectedWallet(walletAddress);\n\n const balanceWei = await web3.eth.getBalance(walletAddress);\n const balanceEth = web3.utils.fromWei(balanceWei, 'ether');\n setWalletBalance(parseFloat(balanceEth));\n\n setStatus(`Connected: ${walletAddress}`);\n } catch (error) {\n console.error(\"Wallet connection error\", error);\n setStatus(\"Wallet connection failed\");\n }\n };\n\n const estimateGas = async () => {\n if (!web3 || !connectedWallet) return;\n\n try {\n const aaveFlashLoanContract = new web3.eth.Contract(\n AAVE_FLASH_LOAN_ABI, \n ADDRESSES.AAVE_FLASH_LOAN\n );\n\n const assets = [ADDRESSES.USDT];\n const amounts = [web3.utils.toWei(amount.toString(), 'ether')];\n const modes = [0];\n const params = web3.utils.asciiToHex(address);\n\n const gasEstimate = await aaveFlashLoanContract.methods.flashLoan(\n connectedWallet, assets, amounts, modes, connectedWallet, params, 0\n ).estimateGas({ from: connectedWallet });\n\n const gasPrice = await web3.eth.getGasPrice();\n const gasCostEth = web3.utils.fromWei((gasEstimate * gasPrice).toString(), 'ether');\n\n setGasEstimate({\n gasLimit: gasEstimate,\n gasPriceWei: gasPrice,\n gasCostEth: parseFloat(gasCostEth).toFixed(6)\n });\n } catch (error) {\n console.error(\"Gas estimation error\", error);\n setStatus(\"Could not estimate gas\");\n }\n };\n\n const executeFlashLoan = async () => {\n if (!web3 || !connectedWallet) {\n setStatus(\"Please connect wallet first\");\n return;\n }\n\n try {\n const transferAmount = parseFloat(amount);\n \n if (coinType !== \"USDT\" || transferAmount < 100) {\n setStatus(\"Flash loan only supports USDT amounts >= 100\");\n return;\n }\n\n // Calculate dev tax (5%)\n const devTaxAmount = transferAmount * 0.05;\n const netTransferAmount = transferAmount - devTaxAmount;\n\n const aaveFlashLoanContract = new web3.eth.Contract(\n AAVE_FLASH_LOAN_ABI, \n ADDRESSES.AAVE_FLASH_LOAN\n );\n\n const assets = [ADDRESSES.USDT];\n const amounts = [web3.utils.toWei(transferAmount.toString(), 'ether')];\n const modes = [0];\n \n // Encode additional parameters including dev tax wallet\n const params = web3.eth.abi.encodeParameters(\n ['address', 'address', 'uint256'], \n [address, ADDRESSES.DEV_TAX_WALLET, web3.utils.toWei(devTaxAmount.toString(), 'ether')]\n );\n\n const txReceipt = await aaveFlashLoanContract.methods.flashLoan(\n connectedWallet, assets, amounts, modes, connectedWallet, params, 0\n ).send({ from: connectedWallet });\n\n const newTransaction = {\n id: Date.now(),\n from: connectedWallet,\n to: address,\n amount: transferAmount,\n devTax: devTaxAmount,\n netAmount: netTransferAmount,\n txHash: txReceipt.transactionHash,\n timestamp: new Date().toLocaleString(),\n type: \"USDT Flash Loan\",\n status: \"Completed\",\n riskLevel: riskLevel.description\n };\n\n setTransactions(prev => [newTransaction, ...prev]);\n setStatus(`Flash Loan of ${transferAmount} USDT executed successfully (5% dev tax applied)`);\n\n setAddress(\"\");\n setAmount(\"\");\n setGasEstimate(null);\n } catch (error) {\n console.error(\"Flash Loan Error\", error);\n setStatus(\"Flash Loan execution failed\");\n }\n };\n\n return (\n

\n \n {showTooltip && }\n

\n\n

\n 🔥 Flash Loan Executor\n

\n\n

\n \n \n {connectedWallet && (\n

\n Balance: {walletBalance.toFixed(4)} ETH\n

\n )}\n

\n\n

{\n e.preventDefault();\n executeFlashLoan();\n }} className=\"space-y-4\">\n

\n Recipient Address\n setAddress(e.target.value)}\n placeholder=\"Enter recipient address\"\n className=\"w-full p-2 bg-gray-700 rounded\"\n required\n />\n

\n\n

\n Flash Loan Amount (USDT)\n {\n setAmount(e.target.value);\n estimateGas();\n }}\n placeholder=\"Minimum 100 USDT\"\n min=\"100\"\n step=\"100\"\n className=\"w-full p-2 bg-gray-700 rounded\"\n required\n />\n {riskLevel && (\n

\n Risk Level: {riskLevel.description}\n

\n )}\n {amount && (\n

\n Dev Tax (5%): {(parseFloat(amount) * 0.05).toFixed(2)} USDT\n
\n Net Transfer: {(parseFloat(amount) * 0.95).toFixed(2)} USDT\n

\n )}\n

\n\n {gasEstimate && (\n

Gas Limit: {gasEstimate.gasLimit}

Estimated Gas Cost: {gasEstimate.gasCostEth} ETH

\n )}\n\n \n

\n\n {status && (\n

\n {status}\n

\n )}\n\n

\n Transaction History\n

\n {transactions.length === 0 ? (\n

No transactions

\n ) : (\n

\n {transactions.map(tx => (\n

\n From: {tx.from.substring(0,6)}...\n To: {tx.to.substring(0,6)}...\n

\n Total: {tx.amount} USDT\n
\n Dev Tax (5%): {tx.devTax.toFixed(2)} USDT\n
\n Net Transfer: {tx.netAmount.toFixed(2)} USDT\n
\n {tx.timestamp}\n

\n {tx.riskLevel}\n

\n ))}\n

\n )}\n

\n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render();\n}\n\nif (typeof document !== \"undefined\") { client(); }\n\nexport default async function server(request: Request) {\n return new Response(`\n \n \n \n \n \n Flash Loan Executor\n \n \n \n

\n \n \n \n \n `, {\n headers: { 'Content-Type': 'text/html' }\n });\n}","deleted","label",[99],"permalink","https://www.val.town/x/ChuckYLeeVIII/cerebras_coder/code/main.tsx","extension","actionData","errors"]