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 Building Full Stack DeFi Applications

Building Full Stack DeFi Applications

By : Zhou
4.6 (5)
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 Building Full Stack DeFi Applications

Building Full Stack DeFi Applications

4.6 (5)
By: Zhou

Overview of this book

Enter the world of Decentralized Finance (DeFi) with Building Full Stack DeFi Applications. Understand how this blockchain-based financial technology, designed to manage crypto assets, runs independently without centralized financial institutions like banks and brokerages, eliminating the fees that banks and other financial companies charge for using their services. This book will show you how DeFi solutions are built with smart contracts running on blockchains and how they allow users to gain and earn crypto assets based on the trust of the smart contracts. This book uncovers the inner workings of DeFi by guiding you through the mathematical foundations and teaching you how to build real-world DeFi products with Solidity and JavaScript. As you progress through the chapters, you’ll learn how to implement smart contracts of liquidity pools to trade cryptocurrencies and implement staking, including farming features that allow users to earn. You’ll also find out how to create asset pools that allow users to lend and borrow cryptocurrencies and generate interest. Additionally, you’ll discover how to use Web3 libraries to build the frontend of DeFi products. By the end of this book, you’ll will be well acquainted with popular tools, libraries, and design patterns for implementing a full-stack DeFi application with Web3 and Solidity.
Table of Contents (21 chapters)
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1
Part 1: Introduction to DeFi Application Development
5
Part 2: Design and Implementation of a DeFi Application for Trading Cryptos
11
Part 3: Building a DeFi Application for Staking and Yield Farming
14
Part 4: Building a Crypto Loan App for Lending and Borrowing

Testing and debugging the smart contract

After smart contracts are deployed, we need some approaches to verify whether they work as expected. Luckily, Hardhat provides several useful tools and libraries for us to verify smart contracts, and they can also be easily integrated with popular testing libraries such as Chai (https://www.chaijs.com/).

In this section, we will first learn how to use the Hardhat console to verify smart contracts. Then we will use the chai testing library and the mocha testing framework to write and run test cases for the smart contract. Lastly, we will demonstrate how to use the Hardhat console.log function to debug smart contracts.

Verifying smart contract with the Hardhat console

Before starting the Hardhat console, please make sure the local EVM has been started and the Simple DeFi Token smart contract has been deployed. If not, please refer to the previous sections:

  1. Now, let’s start the Hardhat console and connect the local EVM by...

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