When should I choose Rust over Bun for a CLI tool?

Rust is recommended when startup time is critical (sub-2ms), for performance-intensive tasks, or when you need to distribute a small, standalone binary without requiring a runtime.

Does this skill help with argument parsing?

Yes, it leverages the Citty framework to provide declarative argument parsing, typed inputs, aliases, and automatically generated help screens.

Why use Bun for CLI tools instead of standard Node.js?

Bun offers significantly faster startup times (around 13ms) and native TypeScript support without a separate compilation step, which is crucial for the responsive feel of command line utilities.

How does shell integration work with this skill?

The skill utilizes Bun's built-in shell strings for executing commands, capturing stdout/stderr, and handling process streams with a clean, promise-based API.

Modern CLI Development

Name: Modern CLI Development
Author: mshuffett

bymshuffett

Developer Tools

Builds high-performance command line tools using Bun and Citty with optimized startup times and developer experience.

About

This skill streamlines the creation of command line interfaces by recommending a modern stack of Bun and Citty for an optimal balance of speed and developer experience. It provides Claude with specific implementation patterns for building TypeScript-native CLI applications, managing complex subcommands, and handling shell integration via Bun's built-in shell API. Whether you are automating local workflows in your dotfiles or building production-grade utilities, this skill ensures your tools are fast, maintainable, and follow industry best practices for CLI design.

Key Features

Standardized directory patterns for dotfiles management
Automated subcommand and typed argument configuration
0 GitHub stars
High-performance shell integration via Bun's shell API
Performance-driven stack selection between Bun and Rust
Optimized Bun + Citty boilerplate generation

Use Cases

Migrating slow legacy scripts to high-performance TypeScript CLIs
Building complex command line apps with nested subcommands and auto-generated help
Creating new developer utilities for local workflow automation

About

Key Features

Standardized directory patterns for dotfiles management
Automated subcommand and typed argument configuration
0 GitHub stars
High-performance shell integration via Bun's shell API
Performance-driven stack selection between Bun and Rust
Optimized Bun + Citty boilerplate generation

Use Cases

Migrating slow legacy scripts to high-performance TypeScript CLIs
Building complex command line apps with nested subcommands and auto-generated help
Creating new developer utilities for local workflow automation