Скачать или смотреть How to Resolve the BREAKING CHANGE Error When Adding web3 to Your React Project

Learn how to troubleshoot the `BREAKING CHANGE: webpack 5` error when integrating the web3 package in your React project and find solutions to ensure smooth functionality.
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How to Resolve the BREAKING CHANGE Error When Adding web3 to Your React Project

If you're diving into the world of web3 and are ready to add the web3 package to your React project, you might face a frustrating hurdle: the BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default error. This error can be particularly daunting, especially for developers who are less experienced with configuring webpack or understanding polyfills in JavaScript.

But don’t worry! In this guide, we’ll break down the problem, explore the underlying causes, and guide you through the solution step by step, ensuring your web3 integration goes as smoothly as possible.

Understanding the Problem

When you run the command to add the web3 package to your React project with Yarn:

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you might encounter the error statement mentioning that webpack 5 does not include polyfills for Node.js core modules automatically anymore. This is a significant change in how webpack handles module dependencies and can lead to confusion if you’re not equipped with the right knowledge to resolve it.

The Solution: Key Steps to Fix the Error

After experimenting and troubleshooting for a few days, I discovered a manageable solution that involved adjusting the versions of two primary packages in my React project: react-router-dom and react-scripts. Here’s a detailed breakdown of how to implement this fix effectively.

Step 1: Identify the Problematic Packages

react-scripts: This package serves as the configuration for Create React App, managing webpack settings behind the scenes.

react-router-dom: A commonly used library for routing in React applications.

The primary version issue appears to stem from using a major version of react-scripts that is not compatible with the web3 package.

Step 2: Downgrade the Packages

Here’s how to downgrade the packages to a version that works without causing errors:

Change the version of react-scripts to a lower version that is compatible with webpack settings. For example:

[[See Video to Reveal this Text or Code Snippet]]

If required, downgrading react-router-dom might also be necessary, although the react-scripts downgrade often resolves the error.

Step 3: Verify Success

Once you've downgraded the packages, start your application again to verify whether the issue is resolved:

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If everything is configured correctly, you should now be able to integrate the web3 package into your React project without encountering the webpack error.

Conclusion

Integrating web3 into your React project can initially present challenges, particularly due to webpack's handling of Node.js core module polyfills in its newer versions. However, by downgrading critical packages like react-scripts, you can overcome these hurdles effectively. Remember to keep an eye on compatibility when working with packages to ensure a smooth development experience.

If you have any more questions or issues while setting up web3 in your React project, feel free to leave comments below. Happy coding!