dex's Introduction

DEX

Build an exchange with only one asset pair (Eth / Crypto Dev)
Your Decentralized Exchange should take a fees of 1% on swaps
When user adds liquidity, they should be given Crypto Dev LP tokens (Liquidity Provider tokens)
CD LP tokens should be given proportional to the Ether user is willing to add to the liquidity

Prerequisites

ICO Tutorial

Setup Hardhat

mkdir hardhat-tutorial
cd hardhat-tutorial
npm init --yes
npm install --save-dev hardhat
# init hardhat
npx hardhat
npm install @openzeppelin/contracts
# remove boilerplate contract
rm contracts/Lock.sol

Create Contract Files

touch contracts/Exchange.sol
code contracts/Exchange.sol

Environment Variables

npm install dotenv
touch .env.example
echo 'QUICKNODE_HTTP_URL=""' >> .env.example
echo 'PRIVATE_KEY=""' >> .env.example
cp .env.example .env
# set nft contract address
mkdir constants
touch constants/index.js

code .env
code constants/index.js
code scripts/deploy.js
code hardhat.config.js

Update files and deploy

npx hardhat compile
npx hardhat run scripts/deploy.js --network goerli

Frontend

npx create-next-app@latest
cd my-app
# add deps
npm install web3modal ethers
# add contract addresses
mkdir constants utils
touch constants/index.js
touch utils/addLiquidity.js
touch utils/removeLiquidity.js
touch utils/getAmounts.js
touch utils/swap.js
# make changes
code styles/Home.module.css
code pages/index.js
code constants/index.js
code utils/addLiquidity.js
code utils/removeLiquidity.js
code utils/getAmounts.js
code utils/swap.js
# run client
npm run dev

Recommend Projects