How do I install the Tsdown skill?

Run npx skillmds@latest add onmax/tsdown in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Tsdown safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Tsdown?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Tsdown free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under MIT.

Who published Tsdown?

onmax (@onmax) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Tsdown by onmax — Agent Skill

Name: Tsdown
Rating: 4.2 (5 reviews)
Author: onmax

File contents

tsdown

Rolldown + Oxc powered TypeScript bundler. Drop-in tsup replacement.

When to Use

Building TypeScript libraries
Generating .d.ts declarations
Publishing npm packages
Dual ESM/CJS output
Vue/React component libraries

Quick Start

npm i -D tsdown typescript

// tsdown.config.ts
import { defineConfig } from 'tsdown'

export default defineConfig({
  entry: 'src/index.ts',
  format: 'esm',
  dts: true,
  exports: true,
})

tsdown           # Build
tsdown --watch   # Watch mode

Reference Files

Task	File
Config file, CLI, entry points	config.md
Format, target, dts, exports	output.md
Shims, unbundle, watch, frameworks	features.md
Plugins, hooks, programmatic, migration	advanced.md

Loading Files

Consider loading these reference files based on your task:

references/config.md - if setting up tsdown.config.ts, CLI, or entry points
references/output.md - if configuring output format, target, .d.ts, or exports
references/features.md - if using shims, unbundle, watch mode, or framework integrations
references/advanced.md - if writing plugins, using programmatic API, or migrating from tsup

DO NOT load all files at once. Load only what's relevant to your current task.

Cross-Skill References

Library patterns → Use ts-library skill
Vue component libs → Use vue skill
Package management → Use pnpm skill

---name: tsdowndescription: Use when bundling TypeScript libraries - provides tsdown configuration, dual ESM/CJS output, .d.ts generation, and plugin authoringlicense: MIT---# tsdownRolldown + Oxc powered TypeScript bundler. Drop-in tsup replacement.## When to Use- Building TypeScript libraries- Generating .d.ts declarations- Publishing npm packages- Dual ESM/CJS output- Vue/React component libraries## Quick Start```bashnpm i -D tsdown typescript``````ts// tsdown.config.tsimport { defineConfig } from 'tsdown'export default defineConfig({ entry: 'src/index.ts', format: 'esm', dts: true, exports: true,})``````bashtsdown # Buildtsdown --watch # Watch mode```## Reference Files| Task | File || --------------------------------------- | ------------------------------------- || Config file, CLI, entry points | [config.md](references/config.md) || Format, target, dts, exports | [output.md](references/output.md) || Shims, unbundle, watch, frameworks | [features.md](references/features.md) || Plugins, hooks, programmatic, migration | [advanced.md](references/advanced.md) |## Loading Files**Consider loading these reference files based on your task:**- [ ] [references/config.md](references/config.md) - if setting up tsdown.config.ts, CLI, or entry points- [ ] [references/output.md](references/output.md) - if configuring output format, target, .d.ts, or exports- [ ] [references/features.md](references/features.md) - if using shims, unbundle, watch mode, or framework integrations- [ ] [references/advanced.md](references/advanced.md) - if writing plugins, using programmatic API, or migrating from tsup**DO NOT load all files at once.** Load only what's relevant to your current task.## Cross-Skill References- **Library patterns** → Use `ts-library` skill- **Vue component libs** → Use `vue` skill- **Package management** → Use `pnpm` skill

Frequently asked questions

Tsdown