@rushstack/ts-command-line simplifies building command-line tools with TypeScript. It offers a robust framework for parsing arguments, generating help messages, and validating user input. Developers can easily define commands, options, and parameters with clear types and descriptions. This leads to consistent, well-structured CLIs with built-in support for documentation generation and error handling. It's ideal for projects needing sophisticated command-line interfaces with a focus on maintainability and developer experience.