rubyredmoon / flashloan-arbitrage-money-legos

A flashloan arbitrage example using money legos

Flashloan Example using Money Legos

In this example we will use the Money Legos Library to create a flashloan and arbitrage accross several DEXs.

Test Uniswap Exchanges

This example uses a couple of exchanges set up and maintained by @robsjr and @ggviana. The are forks of Uniswap and published on the Kovan network to help test arbitrage smart contracts like this one. The two exchanges are:

• Uniswap Exchange A
• Uniswap Exchange A

YouTube Video Tutorial

I have made a video turtorial over on the DevBootstrap YouTube channel. Enjoy and don't forget to Like!

Usage

Below are high level instructions to try out this example using the Kovan Testnet.

Setup

Rename env to '.env' and complete the missing values for your project.

Connect your truffle console to the Kovan network like so:

truffle console --network kovan

Compile / Deploy

Compile and deploy the contract to the Kovan network. From within your truffle console instance do the following:

compile
migrate --reset

Interact via Truffle Console

Interact with the contract via 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)

Interact via Typescript app

There is a Typescript file that runs the same above arbitrage. This can be run as folllows.

Install Typescript and ts-node

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

Now run the script as follows:

ts-node src/execFlashloanMoneyLego.ts

Verify

Confirm the transaction output in Kovan Etherscan.