Cerebral is an innovative solution designed for state management and handling side effects in popular JavaScript frameworks. If you’re looking for a way to streamline your application’s state management process, you’re in the right place! In this article, we will walk you through how to get started with Cerebral and address any potential issues you might face along the way.

Getting Started with Cerebral

To dive into Cerebral, you first need to clone the monorepo containing the codebase. Here’s how you can get started:

git clone https://github.com/cerebral/cerebral.git

After cloning the repository, navigate to the root directory and install the necessary packages:

npm install

The beauty of this setup is that since everything is organized in a monorepo, you do not need to install dependencies for each package individually.

Creating Symlinks for Your Application

If you want to use Cerebral 2 directly from your cloned repository for your own application, you will need to create symlinks. This process links the necessary directories into the node_modules directory of your app. Here are the steps:

ln -s ../../cerebral/packages/node_modules/cerebral node_modules
ln -s ../../cerebral/packages/node_modules/function-tree node_modules
ln -s ../../cerebral/packages/node_modules/@cerebral node_modules

Remember to unlink these packages before you install them from npm:

unlink node_modules/cerebral

Running Demos and Testing

To see Cerebral in action, you can run demos available in the respective package demos by navigating to the demo folder and using:

npm start

For testing, you can run all the tests across all packages by executing the following command from the root:

npm test

Alternatively, if you want to test specific packages, you can do so by navigating to the respective package’s root and running npm test there as well.

Working with Code Changes

When you’re ready to make changes to the code, it’s a good practice to create a new branch first. After making your changes and ensuring they’re supported by tests, you can commit your changes from the root using:

npm run commit

This command will guide you through creating a commit message, which helps keep your project organized. After that, you can push your changes and create a pull request on GitHub as usual.

The Release Process

Releasing a new version of Cerebral involves merging pull requests, installing any new dependencies, and then executing the release command:

npm run release

This will ensure that all changes are incorporated correctly before pushing them to the master branch.

Troubleshooting

While everything should work smoothly, you may encounter some issues along the way. Here are some common problems and solutions:

• Dependency Issues: If you encounter problems related to dependencies during installation or testing, make sure you have the latest version installed and try clearing your npm cache with npm cache clean --force.
• Linking Problems: If symlink commands do not seem to work, ensure you are executing them from the correct directory.
• Tests Failing: Double-check your changes and ensure that all tests are passing before proceeding with commits or pull requests.

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Conclusion

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Using Analogies to Explain Cerebral’s Code

The entire Cerebral framework can be thought of as a highly efficient assembly line in a factory. Picture a factory where workers (components of your application) are constantly passing on parts (data or state) to each other to assemble a product (a complete view or application). Each worker has a specific role and they rely on precise instructions (state management) to ensure everything is assembled correctly. If a worker gets distracted or does not perform their role properly (side effects), it can lead to a messy output. Cerebral provides the necessary tools and instructions to streamline this assembly process, ensuring each part fits perfectly without causing chaos down the line.

With this guide, you should now be well-prepared to start using Cerebral effectively in your JavaScript applications!