Parcel

📦🚀 Blazing fast, zero configuration web application bundler

[Parcel @parceljs]

If you’re using React Server Components with Parcel, please upgrade the react-server-dom-parcel package in your lock file ASAP!

[React @reactjs]

There is critical vulnerability in React Server Components disclosed as CVE-2025-55182 that impacts React 19 and frameworks that use it.

A fix has been published in React versions 19.0.1, 19.1.2, and 19.2.1. We recommend upgrading immediately.

https://t.co/kue7kd0XEX

[Devon Govett @devongovett]

In case you missed it, here’s the recording of my talk! https://t.co/Kb2ycaHACR

[Daniel Williams @Danny_H_W]

Did you know this was possible with parcel? Pretty cool.

[Devon Govett @devongovett]

Wrote an article about how React Server Components integrate with a bundler. It's a deep dive into how code splitting works, how RSCs eliminate network waterfalls, how environment directives like "use client" work, CSS loading, etc. Check it out! https://t.co/LzcdzszrG3

[Devon Govett @devongovett]

Very happy that Parcel helped enable this! 🤩

[Devon Govett @devongovett]

RSC support in React Router powered by Parcel! 🤩 https://t.co/rh2gAa98Cr

[Devon Govett @devongovett]

Parcel v2.15 introduces a new HTML and SVG transformer and minifier written in Rust using browser-grade components from Firefox + Servo! 🚀

Replaces posthtml, htmlnano, SVGO, and SVGR.

10x faster. Reduces npm dependencies by 25% and install size by 45%.

https://t.co/lqYHMY8Vhk

[Devon Govett @devongovett]

React 19.1 enables Server Components in Parcel with React Stable (not only canary)! Just released Parcel v2.14.3 with the corresponding update. 🥳

[Devon Govett @devongovett]

Added new Parcel React Server Components examples with Deno and Bun!

You can use any server/runtime you want. Parcel just builds your code.

https://t.co/kn1RGr0507

[Devon Govett @devongovett]

Blog post: https://t.co/LZuBK3hfDh

Try it out: npm create parcel react-server my-rsc-app

[Devon Govett @devongovett]

Happy to announce Parcel v2.14, now with support for React Server Components! 🥳

RSCs can be integrated into client-rendered apps, server rendered, or statically rendered at build time.

Also: rust MDX compiler, create-parcel CLI, new error overlay, and native import maps.

[Devon Govett @devongovett]

$ npx cra-to-parcel ✨

[Devon Govett @devongovett]

New Create React App to Parcel migration guide: https://t.co/tMGKzRt4mf

Covers our new automated migration script, and how to migrate manually step by step.

[Devon Govett @devongovett]

Just published a Storybook Builder for Parcel! 🥳

It preserves state via React Fast Refresh in both your components and CSF story files using a custom transformer. Haven't seen this anywhere else.

Hot reloading for auto-generated controls via TS too.

[Devon Govett @devongovett]

Just released Parcel v2.13.0! 🚀

Mostly a maintenance release (40+ fixes & updates!), but also a few nice features:

📚 New library mode that doesn't bundle, for improved tree shakability
🧑‍🍳 TypeScript proxy server config
🗃️ Globs in package.json source field
🏎️ Faster resolver

[Devon Govett @devongovett]

Lightning CSS v1.25.0 is out! ⚡️

• CSS module options to disable scoping for grid, animation, and other features
• Optimizes the `all` shorthand
• Support animation-timeline in animation shorthand
• Bug fixes for transforms, color, and animations

https://t.co/F8YFmIfzsP

[Devon Govett @devongovett]

Parcel also enables you to generate additional assets (eg css) from a macro. You can build your own statically extracted CSS-in-JS library in only a few lines of code. And since macros are just functions, you can create any API you want, eg accepting objects or theme values! 😲

[Devon Govett @devongovett]

tailwind-merge can be used as a macro in Parcel to run it at build time! The output is a static string, so there is no runtime performance impact and the 20kb of extra bundle size is avoided. Pretty cool! 🙂

[Devon Govett @devongovett]

📢 Parcel v2.12.0 brings support for macros, a new web-based REPL, improved CSS bundling, and manual code splitting!

Macros are JS/TS functions that run at build time instead of being bundled. They can generate constants, code, and even assets (eg css)!

https://t.co/PVCgG11H1y

[Devon Govett @devongovett]

Just released Lightning CSS v1.24.0! ⚡️

Support for compiling the light-dark() color function, enabling simple OS + programmatic dark mode toggles! 🌘

Also improves minification for custom properties, @​keyframes rules, system colors, and more! 💪

https://t.co/VujSL2pqmy