Uniswap V3 backend

Goal

• deploy V3 locally
• understand contracts end 2
• understand concentrated liquidity
• deploy to Sepolia?
• test flash loans in Sepolia
• test pool rebalancing in Sepolia with mock CEX prices

Initial Setup

1.Use Node > 22 nvm ls nvm use lts/jod

2.Setup for project creation mkdir uni-v3-backend && cd uni-v3-backend Create a project npm init -y

Install dev dependencies

 npm i -D hardhat typescript ts-node @types/node \
  @nomicfoundation/hardhat-toolbox @nomicfoundation/hardhat-ethers @nomicfoundation/hardhat-verify \
  typechain @typechain/hardhat @typechain/ethers-v6 \
  hardhat-dependency-compiler dotenv

Install non-dev dependencies

  npm i ethers @uniswap/v3-core @uniswap/v3-periphery @uniswap/swap-router-contracts canonical-weth

Initialise using Hardhat

npx hardhat init 

3. Updated the tsconfig.json
4. Update hardhat-config.ts

• Tell hardhat what compilers would you be using. As I will compile Uni v3 code, I would need 0.7.6 and 0.4.18 for Weth9

4. Write tests

5. Deploy

Boiler plate autogenerated , can remove later

Try running some of the following tasks:

npx hardhat help
npx hardhat test
REPORT_GAS=true npx hardhat test
npx hardhat node
npx hardhat ignition deploy ./ignition/modules/Lock.ts