Check the code in src/index.js for the commands; it appears to be written in a spaghetti code style. To make the command code more scalable and maintainable for the long term, follow these guidelines:

• Break down the code into smaller, reusable modules or functions. Each command should ideally have its own module or file.

• Separate the concerns of input parsing, command execution, and output generation. This will make it easier to change or expand functionalities in the future.

• Implement proper error handling and validation to prevent unexpected crashes and provide meaningful error messages to users.

• Consider the potential for scalability when designing your code. Will it be easy to add new commands or features in the future?