decline

Enables building complex parsers from smaller, reusable components using functional combinators, as demonstrated in the README example where options are combined with .mapN for concise logic.

Leverages Scala's type system to ensure command-line arguments are parsed and validated correctly, reducing runtime errors and improving reliability, as highlighted in the project's philosophy.

Generates comprehensive and well-formatted help text automatically based on parser definitions, saving development time on documentation, a key feature mentioned in the README.

Facilitates building CLI tools with nested commands, similar to git or docker, making it suitable for complex applications with hierarchical interfaces.

Seamlessly integrates with the Cats functional programming library, providing consistent abstractions for projects already in the Typelevel ecosystem, as noted in the features.