Bundle TypeScript and JavaScript libraries into ESM, CJS, IIFE, and UMD formats.
npx skills add https://github.com/kirklin/skills --skill tsdown-kirklin
Please help me install this Agent Skill. Skill: tsdown Source: https://github.com/kirklin/skills/tree/main/skills/tsdown Command: npx skills add https://github.com/kirklin/skills --skill tsdown-kirklin
Bundles TypeScript and JavaScript libraries quickly and efficiently using Rolldown to produce multi-format bundles (ESM, CJS, IIFE, and UMD) along with type declarations, while supporting migration from tsup and library-focused workflows.
Create a tsdown config with defineConfig and run the tsdown CLI to build your library.
High-intent search queries and answers about installing and using this skill.
You can bundle a TypeScript library into ESM, CJS, IIFE, and UMD formats by configuring entry, format, and outDir settings. This process uses Rolldown to deliver multi-format bundles and optional TypeScript declarations.
The best way to migrate tsup configurations is using the built-in migration guidance. You transition existing build settings to a new Rolldown-powered configuration, achieving faster multi-format bundling speeds for your JavaScript library workflows.
Yes, this JavaScript library bundler supports workspace and monorepo setups. It handles multi-package builds within a single repository and integrates React, Vue, and WASM framework plugins while delivering ESM and CJS outputs.
You generate TypeScript declarations when building a JavaScript library by enabling the dts configuration option. This produces .d.ts files alongside your ESM, CJS, IIFE, and UMD bundles during the Rolldown build process.
Yes, you can use Rolldown to treeshake unused code in TypeScript library bundles. By enabling the treeshake configuration setting, you eliminate dead code and reduce the final output size across your ESM, CJS, and UMD builds.
You choose a Rolldown-based build tool over other TypeScript library bundlers to achieve blazing-fast build speeds. It delivers multi-format outputs, workspace support, and seamless migration from tsup for efficient library development.
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