This project demonstrates a basic order book based decentralized exchange. It includes a smart contract for the ERC-20 tokens traded on the exchange, as well as the exchange contract that manages deposits/withdrawals and trades on the DEX. Test files and scripts for deployment and seeding the exchange are included.

Technologies Used:

• JavaScript
• React
• Redux
• Solidity

Libraries Used:

• Ethers.js
• Moment.js
• ApexCharts.js
• Lodash
• React-Blockies
• Reselect
• Redux Thunk
• React-Redux
• Redux DevTools Extension

Testing Libraries:

• React Testing Library
• Jest
• Chai

Dev Tools:

• Hardhat
• dotenv

To test the DEX locally, run the following:

npx hardhat node

npx hardhat --network localhost scripts/1_deploy.js

npx hardhat --network localhost scripts/2_seed_exchange.js

npm run start

The DEX has been deployed on the Sepolia and Mumbai test networks and is configured to service trades for an ERC-20 token, Delta Token (DELTA). DELTA is traded as the base currency in two markets: mETH and mDAI. The mETH and mDAI quote currencies represent mock versions of the Ether and Dai cryptocurrencies. The exchange contract takes a _feePercent parameter upon deployment, which is paid by the user filling an order on the exchange - the taker. The test deployment uses a 10% fee for simplicity.