tsdown Skills for Claude Code

Agent skills that help Claude Code understand and work with tsdown, the elegant library bundler.

Installation

npx skills add rolldown/tsdown

This will add the tsdown skill to your Claude Code configuration.

What's Included

The tsdown skill provides Claude Code with knowledge about:

• Core Concepts - What tsdown is, why use it, key features
• Configuration - Config file formats, options, multiple configs, workspace support
• Build Options - Entry points, output formats, type declarations, targets
• Dependency Handling - External/inline dependencies, auto-externalization
• Output Enhancement - Shims, CJS defaults, package exports
• Framework Support - React, Vue, Solid, Svelte integration
• Advanced Features - Plugins, hooks, programmatic API, Rolldown options
• CLI Commands - All CLI options and usage patterns
• Migration - Migrating from tsup to tsdown

Usage

Once installed, Claude Code will automatically use tsdown knowledge when:

• Building TypeScript/JavaScript libraries
• Configuring bundlers for library projects
• Setting up type declaration generation
• Working with multi-format builds (ESM, CJS, IIFE, UMD)
• Migrating from tsup
• Building framework component libraries

Example Prompts

Set up tsdown to build my TypeScript library with ESM and CJS formats

Configure tsdown to generate type declarations and bundle for browsers

Add React support to my tsdown config with Fast Refresh

Help me migrate from tsup to tsdown

Set up a monorepo build with tsdown workspace support

Documentation

• tsdown Documentation
• GitHub Repository
• Rolldown
• Migration Guide

License

MIT