Overview
tsdown is an open-source frontend skill for Claude Code and compatible agents, published by antfu. Its author describes it as: “Bundle TypeScript and JavaScript libraries with blazing-fast speed powered by Rolldown. Use when building libraries, generating type declarations, bundling for multiple formats, or migrating from tsup.”. The project has 5.8k stars on GitHub and is available under the MIT license. Add it to your setup with `git clone https://github.com/antfu/skills ~/.claude/skills/tsdown`.
What tsdown does
Blazing-fast bundler for TypeScript/JavaScript libraries powered by Rolldown and Oxc.
What’s inside
The SKILL.md for tsdown is organised into these sections:
- Runtime Requirement
- When to Use
- Quick Start
- Basic Configuration
- Core References
- Build Options
- Dependency Handling
- Output Enhancement
- Framework & Runtime Support
- Common Patterns
- Basic Library Bundle
- Multiple Entry Points
Installation
Add tsdown to your agent with:
git clone https://github.com/antfu/skills ~/.claude/skills/tsdownReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
Neither the skill nor its repository names a specific agent. It uses the SKILL.md format, which several agents can load — check the repository for any agent-specific requirements.
License
tsdown is published under the MIT license.
Strengths
- Clear MIT license — safe to read and adapt within its terms
- Ships in antfu/skills, an established project with 5,770 GitHub stars
Author
Topics
Frequently asked questions
- What does tsdown do?
- Bundle TypeScript and JavaScript libraries with blazing-fast speed powered by Rolldown. Use when building libraries, generating type declarations, bundling for multiple formats, or migrating from tsup.
- How do I install tsdown?
- Run git clone https://github.com/antfu/skills ~/.claude/skills/tsdown in your agent, then reload your skills. Review the source at https://github.com/antfu/skills before installing.
- Is tsdown free to use?
- Yes. tsdown is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.
- Where does tsdown come from?
- tsdown ships inside antfu/skills, a repository that contains 19 catalogued skills in total. The repository's 5,770 GitHub stars apply to that whole collection, not to this skill on its own.