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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.
기본적으로 소스를 먼저 확인하는 Prompt가 선택됩니다. 직접 명령으로 전환하거나 로컬 사본을 다운로드할 수도 있습니다.
설치 여부를 결정하기 전에 SKILL.md와 SkillsMP에 표시된 보조 파일을 읽어 보세요.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
직접 명령은 검토 Prompt를 거치지 않습니다. 실행하기 전에 소스를 확인하세요.
npx skills add https://github.com/alovajs/alova --skill tsdown명령은 한 줄로 유지됩니다. 복사하기 전에 가로로 스크롤해 전체 내용을 확인하세요.
로컬 사본을 원하시나요? SkillsMP에서 현재 제공할 수 있는 파일을 다운로드하세요.
SOC 직업 분류 기준
SKILL.md 표시 중
| name | tsdown |
| description | 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. |
Blazing-fast bundler for TypeScript/JavaScript libraries powered by Rolldown and Oxc.
tsdown requires Node.js 22.18.0 or higher to run (build-time only). However, the bundled output can target much lower Node.js versions via the target option, so libraries built with tsdown are not locked to Node.js 22+ at runtime.
If your package needs to support Node.js 18 / 20:
target: 'node18' or target: 'node20').# Install
pnpm add -D tsdown
# Basic usage
npx tsdown
# With config file
npx tsdown --config tsdown.config.ts
# Watch mode
npx tsdown --watch
npx tsdown-migrate
import { defineConfig } from 'tsdown';
export default defineConfig({
entry: ['./src/index.ts'],
format: ['esm', 'cjs'],
dts: true,
clean: true
});
| Topic | Description | Reference |
|---|---|---|
| Getting Started | Installation, first bundle, CLI basics | guide-getting-started |
| Configuration File | Config file formats, multiple configs, workspace | option-config-file |
| CLI Reference | All CLI commands and options | reference-cli |
| Migrate from tsup | Migration guide and compatibility notes | guide-migrate-from-tsup |
| Plugins | Rolldown, Rollup, Unplugin support | advanced-plugins |
For comprehensive migration assistance with complete option mappings, install the dedicated
tsdown-migrateskill:npx skills add rolldown/tsdown --skill tsdown-migrate| Hooks | Lifecycle hooks for custom logic | advanced-hooks | | Programmatic API | Build from Node.js scripts | advanced-programmatic | | Rolldown Options | Pass options directly to Rolldown | advanced-rolldown-options | | CI Environment | CI detection,'ci-only'/'local-only'values | advanced-ci |
| Option | Usage | Reference |
|---|---|---|
| Entry points | entry: ['src/*.ts', '!**/*.test.ts'] | option-entry |
| Output formats | format: ['esm', 'cjs', 'iife', 'umd'] | option-output-format |
| Output directory | outDir: 'dist', outExtensions | option-output-directory |
| Type declarations | dts: true, dts: { sourcemap, compilerOptions, vue } | option-dts |
| Target environment | target: 'es2020', target: 'esnext' | option-target |
| Platform | platform: 'node', platform: 'browser' | option-platform |
| Tree shaking | treeshake: true, custom options | option-tree-shaking |
| Minification | minify: true, minify: 'dce-only' | option-minification |
| Source maps | sourcemap: true, 'inline', 'hidden' | option-sourcemap |
| Watch mode | watch: true, watch options | option-watch-mode |
| Cleaning | clean: true, clean patterns | option-cleaning |
| Log level | logLevel: 'silent', failOnWarn: false | option-log-level |
| Feature | Usage | Reference |
|---|---|---|
| Never bundle | deps: { neverBundle: ['react', /^@myorg\//] } | option-dependencies |
| Always bundle | deps: { alwaysBundle: ['dep-to-bundle'] } | option-dependencies |
| Only bundle | deps: { onlyBundle: ['cac', 'bumpp'] } - Whitelist | option-dependencies |
| Skip node_modules | deps: { skipNodeModulesBundle: true } | option-dependencies |
| Auto external | Automatic dependency/peer/optional externalization | option-dependencies |
| Feature | Usage | Reference |
|---|---|---|
| Shims | shims: true - Add ESM/CJS compatibility | option-shims |
| CJS default | cjsDefault: true (default) / false | option-cjs-default |
| Package exports | exports: true - Generate exports field | option-package-exports |
| CSS handling | [experimental] css: { ... } — full pipeline with preprocessors, Lightning CSS, PostCSS, CSS modules, code splitting; requires @tsdown/css | option-css |
| CSS modules | css: { modules: { localsConvention: 'camelCase' } } — scoped class names for .module.css files | option-css |
| CSS inject | css: { inject: true } — preserve CSS imports in JS output | option-css |
| Unbundle mode | unbundle: true - Preserve directory structure | option-unbundle |
| Root directory | root: 'src' - Control output directory mapping | option-root |
| Executable | [experimental] exe: true - Bundle as standalone executable, cross-platform via @tsdown/exe | option-exe |
| Package validation | publint: true, attw: true - Validate package | option-lint |
| Framework | Guide | Reference |
|---|---|---|
| React | JSX transform, React Compiler | recipe-react |
| Vue | SFC support, JSX | recipe-vue |
| Solid | SolidJS JSX transform | recipe-solid |
| Svelte | Svelte component libraries (source distribution recommended) | recipe-svelte |
| WASM | WebAssembly modules via rolldown-plugin-wasm | recipe-wasm |
export default defineConfig({
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
dts: true,
clean: true
});
export default defineConfig({
entry: {
index: 'src/index.ts',
utils: 'src/utils.ts',
cli: 'src/cli.ts'
},
format: ['esm', 'cjs'],
dts: true
});
export default defineConfig({
entry: ['src/index.ts'],
format: ['iife'],
globalName: 'MyLib',
platform: 'browser',
minify: true
});
export default defineConfig({
entry: ['src/index.tsx'],
format: ['esm', 'cjs'],
dts: true,
deps: {
neverBundle: ['react', 'react-dom']
},
inputOptions: {
jsx: { runtime: 'automatic' }
}
});
export default defineConfig({
entry: ['src/**/*.ts', '!**/*.test.ts'],
unbundle: true, // Preserve file structure
format: ['esm'],
dts: true
});
export default defineConfig({
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
dts: true,
failOnWarn: 'ci-only', // opt-in: fail on warnings in CI
publint: 'ci-only',
attw: 'ci-only'
});
import { wasm } from 'rolldown-plugin-wasm';
import { defineConfig } from 'tsdown';
export default defineConfig({
entry: ['src/index.ts'],
plugins: [wasm()]
});
export default defineConfig({
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
dts: true,
target: 'chrome100',
css: {
preprocessorOptions: {
scss: {
additionalData: `@use "src/styles/variables" as *;`
}
}
}
});
export default defineConfig({
entry: ['src/cli.ts'],
exe: true
});
@tsdown/exe)export default defineConfig({
entry: ['src/cli.ts'],
exe: {
targets: [
{ platform: 'linux', arch: 'x64', nodeVersion: '25.7.0' },
{ platform: 'darwin', arch: 'arm64', nodeVersion: '25.7.0' },
{ platform: 'win', arch: 'x64', nodeVersion: '25.7.0' }
]
}
});
export default defineConfig({
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
dts: true,
hooks: {
'build:before': async context => {
console.log('Building...');
},
'build:done': async context => {
console.log('Build complete!');
}
}
});
Export an array for multiple build configurations:
export default defineConfig([
{
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
dts: true
},
{
entry: ['src/cli.ts'],
format: ['esm'],
platform: 'node'
}
]);
Use functions for dynamic configuration:
export default defineConfig(options => {
const isDev = options.watch;
return {
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
minify: !isDev,
sourcemap: isDev
};
});
Use glob patterns to build multiple packages:
export default defineConfig({
workspace: 'packages/*',
entry: ['src/index.ts'],
format: ['esm', 'cjs'],
dts: true
});
# Basic commands
tsdown # Build once
tsdown --watch # Watch mode
tsdown --config custom.ts # Custom config
npx tsdown-migrate # Migrate from tsup
# Output options
tsdown --format esm,cjs # Multiple formats
tsdown -d lib # Custom output directory (--out-dir)
tsdown --minify # Enable minification
tsdown --dts # Generate declarations
tsdown --exe # Bundle as standalone executable
tsdown --unbundle # Bundleless mode
# Entry options
tsdown src/index.ts # Single entry
tsdown src/*.ts # Glob patterns
tsdown src/a.ts src/b.ts # Multiple entries
# Workspace / Monorepo
tsdown -W # Enable workspace mode
tsdown -W -F my-package # Filter specific package
tsdown --filter /^pkg-/ # Filter by regex
# Development
tsdown --watch # Watch mode
tsdown --sourcemap # Generate source maps
tsdown --clean # Clean output directory
tsdown --from-vite # Reuse Vite config
tsdown --tsconfig tsconfig.build.json # Custom tsconfig
Always generate type declarations for TypeScript libraries:
{
dts: true;
}
Externalize dependencies to avoid bundling unnecessary code:
{
deps: {
neverBundle: [/^react/, /^@myorg\//];
}
}
Use tree shaking for optimal bundle size:
{
treeshake: true;
}
Enable minification for production builds:
{
minify: true;
}
Add shims for better ESM/CJS compatibility:
{
shims: true;
} // Adds __dirname, __filename, etc.
Auto-generate package.json exports:
{
exports: true;
} // Creates proper exports field
Use watch mode during development:
tsdown --watch
Preserve structure for utilities with many files:
{
unbundle: true;
} // Keep directory structure
Validate packages in CI before publishing:
{ publint: 'ci-only', attw: 'ci-only' }