tsdown
Use when bundling TypeScript libraries - provides tsdown configuration, dual ESM/CJS output, .d.ts generation, package validation, and plugin authoring
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/onmax/nuxt-skills --skill tsdown- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads tsdown automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
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, validation | output.md |
| Shims, unbundle, watch, frameworks, WASM | features.md |
| Plugins, hooks, lint, 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, exports, or validation
- references/features.md - if using shims, unbundle, watch mode, framework integrations, or WebAssembly
- references/advanced.md - if writing plugins, using linting/validation, 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-libraryskill - Vue component libs → Use
vueskill - Package management → Use
pnpmskill
FAQ
What does the tsdown skill do?
Use when bundling TypeScript libraries - provides tsdown configuration, dual ESM/CJS output, .d.ts generation, package validation, and plugin authoring
How do I install tsdown?
Run npx skills add https://github.com/onmax/nuxt-skills --skill tsdown in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/tsdown/ (personal) or .claude/skills/tsdown/ (project).
Which AI agents can use tsdown?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is tsdown safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains tsdown?
It is published by onmax in onmax/nuxt-skills. It has 1,270 recorded installs.
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