Module exists 

Exists Command Presentation Module

This module implements the CLI presentation layer for the exists command, handling argument processing and user interaction.

Architecture

The exists command presentation layer follows the DDD pattern, providing a read-only existence check without any state modification.

Components

• errors - Presentation layer error types with .help() methods
• handler - Main command handler orchestrating the workflow

Output Contract

• Outputs bare true or false to stdout
• Exit code 0 for both true and false results (command succeeded)
• Exit code 1 only for errors (repository failures, invalid name)

Re-exports

pub use handler::ExistsCommandController;

pub use errors::ExistsSubcommandError;

Modules

errors

Error types for the Exists Subcommand

handler

Exists Command Handler