83 lines
3.0 KiB
TypeScript
83 lines
3.0 KiB
TypeScript
/**
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* Cross-Protocol: Flash loan arbitrage pattern
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*
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* This example demonstrates a flash loan arbitrage strategy:
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* 1. Flash loan USDC from Aave
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* 2. Swap USDC → DAI on Uniswap v3
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* 3. Swap DAI → USDC on another DEX (or different pool)
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* 4. Repay flash loan with premium
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* 5. Keep profit
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*
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* Note: This is a conceptual example. Real arbitrage requires:
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* - Price difference detection
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* - Gas cost calculation
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* - Slippage protection
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* - MEV protection
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*/
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import { createWalletRpcClient } from '../../src/utils/chain-config.js';
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import { getAavePoolAddress, getUniswapSwapRouter02 } from '../../src/utils/addresses.js';
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import { getTokenMetadata, parseTokenAmount } from '../../src/utils/tokens.js';
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import { waitForTransaction } from '../../src/utils/rpc.js';
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import type { Address } from 'viem';
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const CHAIN_ID = 1; // Mainnet
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const PRIVATE_KEY = process.env.PRIVATE_KEY as `0x${string}`;
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/**
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* Flash loan receiver contract for arbitrage
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*
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* In production, you would deploy a contract that:
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* 1. Receives flash loan from Aave
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* 2. Executes arbitrage swaps
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* 3. Repays flash loan
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* 4. Sends profit to owner
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*
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* See contracts/examples/AaveFlashLoanReceiver.sol for Solidity implementation
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*/
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const ARBITRAGE_CONTRACT = process.env.ARBITRAGE_CONTRACT as `0x${string}`;
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async function flashLoanArbitrage() {
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const walletClient = createWalletRpcClient(CHAIN_ID, PRIVATE_KEY);
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const publicClient = walletClient as any;
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const account = walletClient.account?.address;
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if (!account) {
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throw new Error('No account available');
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}
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const poolAddress = getAavePoolAddress(CHAIN_ID);
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const token = getTokenMetadata(CHAIN_ID, 'USDC');
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const amount = parseTokenAmount('100000', token.decimals); // 100,000 USDC
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console.log('Flash loan arbitrage strategy:');
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console.log(` 1. Flash loan ${amount} ${token.symbol} from Aave`);
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console.log(` 2. Execute arbitrage swaps`);
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console.log(` 3. Repay flash loan`);
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console.log(` 4. Keep profit`);
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console.log(`\nArbitrage contract: ${ARBITRAGE_CONTRACT}`);
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if (!ARBITRAGE_CONTRACT) {
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throw new Error('ARBITRAGE_CONTRACT environment variable not set');
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}
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// Note: In production, this would be done through a smart contract
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// that implements IFlashLoanReceiver and executes the arbitrage logic
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console.log('\n⚠️ This is a conceptual example.');
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console.log('In production:');
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console.log(' 1. Deploy a flash loan receiver contract');
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console.log(' 2. Contract receives flash loan');
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console.log(' 3. Contract executes arbitrage (swaps)');
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console.log(' 4. Contract repays flash loan + premium');
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console.log(' 5. Contract sends profit to owner');
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console.log('\nSee contracts/examples/AaveFlashLoanReceiver.sol for implementation');
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}
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// Run if executed directly
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if (import.meta.url === `file://${process.argv[1]}`) {
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flashLoanArbitrage().catch(console.error);
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}
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export { flashLoanArbitrage };
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