Tutorial of Flash Swaps of Uniswap V3

Let’s execute Flash Swaps on hardhat forking network!

Photo by Shahadat Rahman on Unsplash

Today I’m going to show you the basic tutorial of Flash Swaps of Uniswap V3. This might be helpful when you want to make a profit from arbitrage trading.

The tutorial repo is here.

Let’s Get Started😁

Installation and Setup

1. Install Node.js & yarn, if you haven’t already.

2. Clone This Repo

Run the following command.

git clone https://github.com/yuichiroaoki/flash-swap-example.git

Quickstart

Right now this repo only works with hardhat mainnet fork. With hardhat, you can run your smart contracts on mainnet fork. For more: Harhdat Docs

1. Setup Environment Variables

You’ll need an ALCHEMY_MAINNET_RPC_URL environment variable. You can get one from Alchemy website for free.

Then, you can create a .env file with the following.

ALCHEMY_MAINNET_RPC_URL='<your-own-alchemy-mainnet-rpc-url>'

2. Install Dependencies

Run the following command.

yarn install