If you’re venturing into the world of blockchain development, you might have stumbled upon Hyperledger Composer. However, as of August 29, 2019, it’s important to note that this project is in a deprecated status. While it’s highly recommended to use Hyperledger Fabric v1.4+ for your blockchain applications, we’re here to walk you through the steps of working with the existing Hyperledger Composer setup.

Prerequisites

• Node.js installed on your machine
• npm (Node Package Manager) which comes with Node.js
• Basic understanding of terminal commands
• A cloned repository of your Hyperledger Composer project

Step 1: Install Lerna

Lerna is a tool that helps manage JavaScript projects with multiple packages. In the context of Hyperledger Composer, it is essential for linking all packages together.

To install Lerna, open your terminal and run the following command:

$ npm install -g lerna

Step 2: Bootstrap the Repository

Once Lerna is installed, you need to bootstrap your cloned repository. This step will install all the dependencies and link the packages together, making it easier to work with them.

In your terminal, navigate to the root directory of your cloned repository and run:

$ lerna bootstrap

Step 3: Working with Packages

Now that your repository is bootstrapped, you can dive into the packages under the packages directory. Each package can be worked on individually, just like a standard Node.js package.

Step 4: Running Commands Across All Packages

If you need to execute commands across all packages at once, Lerna makes this incredibly simple. For instance, to run tests for all packages, use:

$ lerna run test

Troubleshooting

If you run into issues during installation or execution, consider the following:

• Make sure that Node.js and npm are installed correctly.
• Check your internet connection while installing dependencies.
• Ensure that the repository is cloned correctly without any missing files.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Final Thoughts

As we approach the end of this guide, remember that the Hyperledger Composer is no longer the go-to framework for new projects. Hyperledger Fabric v1.4 has introduced a new programming model that significantly enhances the developer experience.

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.