You can also try Vite Plus. Its library bundling capability is based on tsdown.

More powerful, zero/less config

tsdown The Elegant Bundler for Libraries

🚀 tsdown 0.21.4 just dropped. CSS Modules are now supported.

Also, the `tsdown-migrate` skill lets your agent auto-migrate from tsup to tsdown.

❯ npx skills add rolldown/tsdown --skill tsdown-migrate

tsdown.dev/guide/skills

Looks good! Looking forward to the release of the stable version.

IMO, functions unrelated to system capabilities should not be included as Node.js built-in modules.

Instead, if a feature represents a universal capability, it should be considered for inclusion in the JavaScript standard library through TC39. Otherwise, it should remain a third-party library.

I've always wanted to rewrite the `semver` package on npm — until I found that the Deno team already rewrote it in TypeScript on JSR.

So I ported it to npm instead. No more excuses not to use Deno's std library in the npm ecosystem.

npmx.dev/package/std-...

Supported now

feat: Migrate from tsup to tsdown by anthonyshew · Pull Request #11649 · vercel/turborepo Summary Migrates all TypeScript package bundling from tsup to tsdown. tsdown is built on Rolldown and provides faster builds while maintaining compatibility with tsup's configuration patterns. ...

👀 Turborepo is using tsdown!

github.com/vercel/turbo...

🚀 tsdown v0.21 is released now!

github.com/rolldown/tsd...

will implement it

Release v0.21.0-beta.3 · rolldown/tsdown v0.21.0 - Notable Changes Breaking Changes Dependency options renamed to deps namespace The dependency-related options have been moved under a new deps namespace with clearer names: external -> de...

tsdown v0.21 is going to be a big one 🚀

What's new:

✦ Full CSS pipeline (Sass/Less/Stylus + Lightning CSS)
✦ Cross-platform executable builds via @tsdown/exe
✦ Dep options moved to deps namespace
✦ Node.js < 22.18.0 deprecated

Try the beta: npm add tsdown@beta -D

github.com/rolldown/tsd...

feat: add unbash parser · sxzz/ast-explorer@447de11

Added to AST Explorer
github.com/sxzz/ast-exp...

Introduce `inlinedDependencies` Field in `package.json` · Issue #237 · e18e/ecosystem-issues Summary Propose a new inlinedDependencies field in package.json as a community convention for explicitly declaring which dependencies are physically inlined into a published tarball — regardless of...

Followed up with a separate RFC at e18e to discuss the `inlinedDependencies` field as a broader ecosystem standard — naming, shape, and adoption — since it's relevant beyond npmx itself.

If you're interested in the standard side of things, come join the discussion there: github.com/e18e/ecosyst...

Goodbye, npmjs. com!

[RFC] Surface Inline Bundled Dependencies in Package Pages · Issue #1736 · npmx-dev/npmx.dev Summary Add first-class UI support for packages that physically inline their dependencies into their published tarball — making it possible for developers and consumers to understand what packages ...

Wrote a RFC for @npmx.dev

The idea: surface packages that are silently bundled inside other packages' tarballs — and show their "implied downloads".

Would love feedback 👇
github.com/npmx-dev/npm...

Also applied to @e18e.dev

cac - npmx Simple yet powerful framework for building command-line apps.

🎉 cac v7 just dropped — after 3.5 years!

✦ CJS build gone. Now pure ESM!
✦ No more Node.js APIs — runs in any JS runtime, even browsers
✦ Deno? It's on JSR now
✦ Repo refreshed with Vitest / tsdown / npmx

Thanks @egoist.dev for passing the torch 🙌

npmx.dev/package/cac

25.5 at least (only support CJS), require 25.7 if using ESM

🤣

Not right now, but we have plans to support it.

🚀 Coming in the next version of tsdown: built-in Node.js SEA (Single Executable Applications) support!

Now you can bundle your JS apps into a standalone executable with a single command:

tsdown --exe

on vacation - npmx The npmx team is recharging. Discord reopens in a week.

see y'all in a week 👋

ESLint v10 ships with a Node.js version requirement that necessitates `require(esm)`, yet the package remains CJS only.

Why?

It's still very much alive in Chinese indie blog circles, where it's more than SEO - it's a social ritual symbolizing friendship between bloggers and helping readers discover similar content. Think of it as the pre-social-media way of building community.

A "friend link" is basically the old-school blogroll tradition - mutual link exchanges between personal blogs/sites, usually displayed in sidebars or dedicated pages.

I didn't realize this practice has largely faded in the English-speaking web!

Kevin Deng - Open Source Enthusiast Kevin Deng is an open-source enthusiast exploring front-end development. Creator of tsdown, Vue Macros, and Elk. Core team member of Vue, Vite, and more.

Finally finished building my personal website entirely with Vibe Coding!

sxzz.dev

If you’d like to exchange friend links, let me know!

I wanna say this out loud. A few months ago, I told Evan that @voidzero.dev should stop sponsoring me. I burned out, and I couldn't help Vite as before. But they decided to continue supporting me while I was down. And by doing so, they helped me get back on my feet sooner. Thank y'all ❤️

{"timestamp":"2026-01-31T18:10:40.584Z","type":"event_msg","payload":{"type":"agent_reasoning","text":"**Evaluating StackBlitz file retrieval APIs**\n\nConfirmed there is no official public API to fetch arbitrary project files server-side; only browser WebContainer APIs and project creation APIs exist. The unofficial stackblitz.zip tool uses undocumented endpoints, posing risk. Next, I'll verify these endpoints and consider safer alternatives like GitHub API access when projects originate there."}} {"timestamp":"2026-01-31T18:10:40.584Z","type":"event_msg","payload":{"type":"agent_reasoning","text":"**Preparing to cite StackBlitz docs and alternatives**\n\nI'll gather official statements from StackBlitz WebContainer and SDK docs to confirm API limitations, and also reference stackblitz.zip as an unofficial alternative. I'll review the provided MCP docs next for proper citation using web.run."}}

Haha, the API I used is the one I found in your repo

GitHub - sxzz/stackblitz-mcp: MCP server for reading files from StackBlitz projects MCP server for reading files from StackBlitz projects - sxzz/stackblitz-mcp

Just shipped stackblitz-mcp — my first vibe coding project!

An MCP server that lets AI read StackBlitz projects. Useful when you ask AI to debug a GitHub issue and the repro is a StackBlitz link.

stackblitz-mcp.sxzz.dev

tsdown The Elegant Bundler for Libraries

tsdown now has an official AI skill!

Install it:
npx skills add rolldown/tsdown

Your coding agent will know how to configure builds, generate declarations, set up CI validation, bundle WASM, and more.

tsdown.dev/guide/skills

Fundamentally, npm needs a more open community ecosystem, as previous feedback channels have largely disappeared. They should actively embrace broader community input rather than relying on exclusive or restricted channels.