Flashloan Arbitrage Example using Money Legos

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Introduction

This example demonstrates how to utilize the Money Legos Library to execute a flashloan and perform arbitrage across multiple decentralized exchanges (DEXs).

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Test Uniswap Exchanges

To facilitate testing of arbitrage smart contracts, this example utilizes two Uniswap exchanges deployed on the Kovan network. These exchanges, maintained by @robsjr and @ggviana, serve as reliable testing grounds. The exchanges are:

• Uniswap Exchange A
• Uniswap Exchange B

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Usage

Below are step-by-step instructions to replicate this example on the Kovan Testnet.

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Setup

1. Rename the 'env' file to '.env' and fill in the required values for your project.

2. Connect your Truffle console to the Kovan network:

   truffle console --network kovan
   

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Compile and Deploy

Compile and deploy the smart contract to the Kovan network:

compile
migrate --reset

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Interact via Truffle Console

Interact with the deployed contract using the Truffle console:

let f = await FlashloanMoneyLego.deployed()
let assetToFlashLoan = '0xFf795577d9AC8bD7D90Ee22b6C1703490b6512FD' // DAI
let amountToLoan = web3.utils.toWei('1') // 1 unit of the assetToFlashLoan (DAI)
Object.keys(f)
f.addressesProvider()
f.initateFlashLoan(assetToFlashLoan, amountToLoan)

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Interact via Typescript App

A Typescript file is provided to execute the same arbitrage logic:

Install Typescript and ts-node:

npm install -g typescript
npm install -g ts-node

Run the script:

ts-node src/execFlashloanMoneyLego.ts

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Verification

Verify the transaction output on [Kovan Etherscan].

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