You're reading from Building Full Stack DeFi Applications

Product type Book

Published in Mar 2024

Publisher Packt

ISBN-13 9781837634118

Pages 490 pages

Edition 1st Edition

Languages

Concepts

Blockchain

Author (1):

Samuel Zhou

Table of Contents (21) Chapters

Preface

1. Part 1: Introduction to DeFi Application Development

2. Chapter 1: Introduction to DeFi

3. Chapter 2: Getting Started with DeFi Application Development

4. Chapter 3: Interacting with Smart Contracts and DeFi Wallets in the Frontend

5. Part 2: Design and Implementation of a DeFi Application for Trading Cryptos

6. Chapter 4: Introduction to Decentralized Exchanges

7. Chapter 5: Building Crypto-Trading Smart Contracts

8. Chapter 6: Implementing a Liquidity Management Frontend with Web3

9. Chapter 7: Implementing a Token-Swapping Frontend with Web3

10. Chapter 8: Working with Native Tokens

11. Part 3: Building a DeFi Application for Staking and Yield Farming

12. Chapter 9: Building Smart Contracts for Staking and Farming

13. Chapter 10: Implementing a Frontend for Staking and Farming

14. Part 4: Building a Crypto Loan App for Lending and Borrowing

15. Chapter 11: An Introduction to Crypto Loans

16. Chapter 12: Implementing an Asset Pool Smart Contract for a Crypto Loan

17. Chapter 13: Implementing a Price Oracle for Crypto Loans

18. Chapter 14: Implementing the Crypto Loan Frontend with Web3

19. Index

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Summary

In this chapter, we explored how to support native tokens in a DEX, refactoring the smart contracts and UI code to support the native token for liquidity management and token-swapping features. We learned how to use the WETH smart contract to wrap ETH get WETH, which is the ERC20 form of ETH, and use the same smart contract to convert WETH back to ETH. We explored the new functions (addLiquidityETH and removeLiquidityETH) in the AMMRouter smart contract that are added to support liquidity provisioning with ETH, and we looked at liquidity removal to get ETH by leveraging WETH liquidity pools. We also added the four swapExactETHForTokens, swapETHForExactTokens, swapTokensForExactETH, and swapExactTokensForETH functions in the AMMRouter smart contract to perform swapping with ETH.

The approaches we have learned in the chapter should inspire you to implement native token support for other types of DeFi applications. When we build other DeFi applications in this book, such as...