Want to append or prepend content to your files? Then you can use `postBanner` and `postFooter` in @rolldown.rs now! The difference to `banner` and `footer`: The content will be added AFTER minification, making sure that comments are not removed Try it in our REPL repl.rolldown.rs#eNptkD9vwyAQ...

Want to understand why some of your @vitest.dev tests are slower than expected? Then you can use the built-in experimental @opentelemetry.io support to figure out what makes tests slow and how much time is spent on each part of it. 📈

Yes, @rolldown.rs is supporting Rollup's plugin API which is also the base of @vite.dev plugins. But did you know that Rolldown also aligns with certain features from esbuild natively? In turn, you can use `define` and `inject` without any extra plugins. Just define them via your Rolldown config.

✨ Hot from the release press: When using @rolldown.rs and experiencing a slow build, you now see which plugins slow your build down! Note that the reported time is an indication and includes overhead such as Rust-side processing and overhead from the JavaScript event loop.

You can now break down import and transform times in @vitest.dev! This works in the Vitest UI, the terminal and also via the VS Code extension. Time to find out why tests are taking longer than expected! 👀 More in the docs vitest.dev/config/exper...

Did you know that @rolldown.rs's chunking algorithm got improved, leading to less chunks than before in different scenarios? For example when you have two entry chunks and one imports from the other. Instead of having a "facade chunk", the chunks are now merged, resulting in less network requests.

Announcing Oxlint Type-Aware Linting Alpha 🎁 Just a few months after our technical preview, type-aware linting reaches the alpha milestone! ✨ Type-aware rules can now be configured 🙈 Inline comments to disable rules work for type-aware rules too ✔ Auto fixes for type-aware rules are now available

What's new in ViteLand? Our November 2025 recap is out! ✨ @vite.dev 8 Beta 👉 Oxfmt alpha 💻 @vitest.dev caching and imports breakdown ⚓️ Oxc becoming even faster!? 🎙 Updates from the Community 👀 and more voidzero.dev/posts/whats-...

Announcing Oxfmt Alpha! 🚀 We’re excited to announce the alpha release of Oxfmt, our Rust-powered formatter. We designed Oxfmt to be easily adoptable, especially for existing Prettier users More below and in our announcement post voidzero.dev/posts/announ...

Ever since we announced Vite+, the excitement, and the questions, have been rolling in. We took some time to answer the most common ones and also added them at the end of the Vite+ announcement post.

Instead of providing your tsconfig manually in @rolldown.rs, you can now enable @vite.dev like automatic resolution. ◇ Finds the nearest tsconfig.json ◇ Respected by both, resolver and transformer ◇ tsconfig references will be searched as well (given certain criteria are fulfilled)

Want to speed up subsequent @vitest.dev runs? Then try out the new experimental file-system based cache ✨ ⋄ Caches transformed modules ⋄ Does *not* work with browser mode yet ⋄ Can be manually cleared via `vitest --clearCache` More in the docs vitest.dev/config/exper...

Improved require(esm) interop in @rolldown.rs. Since the last beta, the bundler supports the special `as "module.exports"` keyword and aligns with the @nodejs.org behavior. Another step towards better interoperability between CJS and ESM, now with bundler support!

Having a hard time to get a URL for your (relative) assets after bundling? Then you will enjoy the experimental `resolveNewUrlToAsset` option that is available in @rolldown.rs. All you need to do is to activate it, and all `new URL('./path/to/file', import.meta.url)` calls will be updated.

Oxfmt alpha release in two weeks! But pre-release 18k weekly downloads! (jackie chan confused meme)

Vitest 4.0.11 adds an experimental `fsModuleCache` flag to cache module transforms between reruns. Learn more: vitest.dev/config/exper... This is an opt-in feature, please let us know how it works for you! And example of a single test file that imports a lot of files (~1500). Almost a 50% boost!

Did you know that you can match against Standard Schemas in @vitest.dev? With the release of Vitest 4, this is possible now. No matter if you want to match your whole data or only partials against a schema and no matter which validation library is used as long as they support Standard Schema

🚨 PSA: Breaking Change in Oxc v0.98.0 We've updated exposed function names to have a uniform naming pattern and to always expose both, synchronous and asynchronous functions. Async: `<name>()` -> `minify()` Sync: `<name>Sync()` -> `minifySync()` More below and in github.com/oxc-project/...

Watch Jessica Janiuk from the Angular team explain why and how Angular adopted Vite as its dev server, showcasing the resulting developer experience improvements and "neat" new features like hybrid rendering. Full video: youtu.be/ihOlHa3I7eI

Watch @schickling.dev introduce LiveStore, a new local-first data layer designed to simplify the creation of high-performance, native-grade web apps by automatically syncing data with reactive SQLite and event sourcing Full Video: youtu.be/h5Bs0vEka5U

Better Dead Code Elimination in @rolldown.rs ✔ All built-in typed array constructors, such as `Uint32Array`, are now marked as pure. In turn, they are properly removed when they don't have any effect and are "dead code". Another optimization towards smaller bundles 🎉

Zephyr Cloud's Dima Shekhovtsov and Zack Chapple explain how to leverage Module Federation and Vite to break monolithic frontend applications into faster-shipping, independently deployable micro-frontends, allowing continuous deployment with speed and safety. Full video: youtu.be/g59bFyL9aNY

Creator of Svelte, @rich-harris.dev presents an exploration of reactive systems and the benefits of using fine-grained reactivity with compilers, demonstrating how this approach gives developers "remote control" over their code's performance and behavior. Full video: youtu.be/N4WQVmJbpFI

Watch @43081j.com discuss the ongoing efforts to speed up the entire web ecosystem, focusing on advancements in tooling and frameworks like Vite, and shares key insights on how developers can contribute to and benefit from these performance improvements. Full video: youtu.be/AJ58ES-cuzY

Astro's @sarah11918.rainsberger.ca shares practical advice on how to make impactful contributions to open-source projects, focusing on the non-code ways to get started, such as improving documentation, testing, and being a good community member. Full video: youtu.be/bzogTYPv65M

🚀 @rolldown.rs now enables `output.minifyInternalExports` by default. This feature shortens internal export names by using the `as` keyword. At first glance your bundle may look bigger... …but the additional `as` unlocks improved minification.

Watch @salihgueler.dev introduce KIRO, a new agentic development platform designed to rethink the entire software lifecycle by enabling developers to collaborate with AI agents who can plan, design, and implement complex features from high-level prompts. Full Video: youtu.be/l_s2Ar6cT9k

Vite 7.2 is out! ⚡️ 🗃️ `build.license` option 🔌 proxy + HTTP2 support 💜 and more features and fixes Don't forget to check the complete changelog at github.com/vitejs/vite/...

Laravel's @joe.codes shows how they use a new Vite plugin, Wayfinder, to perform 'alchemy,' automatically generating TypeScript types and routes from a PHP backend to create a seamless, end-to-end type-safe development experience when building modern applications. Full Video: youtu.be/9ESjWppqNSI

What's new in ViteLand? Our October 2025 recap is out ✨ Vite+ 📣 Series A announcement 👉 @vite.dev 7.2 beta 💻 @vitest.dev 4 with stable Browser Mode ⚓️ Oxlint JS Plugins & Oxfmt pre-alpha 🎙 Updates from the Community 👀 and more voidzero.dev/posts/whats-...

Cloudflare's James Opstad explains how the Vite Environment API closes the gap between development and production by enabling server-side code to run in its true target runtime directly within the local dev server Full video: youtu.be/eikaYXCzI3Q

Watch @danielroe.dev detail the journey and architectural decisions that led to integrating Vite into the Nuxt framework and offers a sneak peek at v4.2, like the adoption of Vite's Environment API for faster builds and a Rust-powered CLI Full video: youtu.be/uiufuNh6L4E

We raised a $12.5M Series A round, led by Accel. In this next stage, VoidZero is accelerating development on both our open-source projects and Vite+, the unified JavaScript toolchain. This is only the beginning! → voidzero.dev/posts/announ...

Watch @atila.io demonstrate SolidStart's features like "single-flight mutations" and unveils the SolidStart 2.0 roadmap, which involves a deeper integration with Vite's native APIs and a shift towards a more modular, primitive-based architecture Full video: youtu.be/L0w0bnwzjGg

In the latest version of @rolldown.rs, JSON imports are tree-shaken! No more superfluous JSON values in your bundle, only these that you actually access. Without any change of code or config ✨ Interested in the code? Then check out the PR! github.com/rolldown/rol...

Vite 7.2.0-beta.1 is out ✋ Beta docs at main.vitejs.dev 🗃️ `build.license` option 🔌 proxy + HTTP2 support 💜 and more feats and fixes Help us test the beta and give us feedback! Full changelog linked below. github.com/vitejs/vite/...

Watch Yann Braga break down component testing (interaction, visual, and accessibility) and demonstrates how to leverage tools like Vitest within Storybook to create a powerful, unified workflow for building and testing robust UI components. Full video in comments: youtu.be/YNQ_cJ6yy2Q

🚀 Rolldown is now using Oxlint’s type-aware linting github.com/rolldown/rol...

Watch @mk.gg introduce Astro, a web framework built on Vite for creating high-performance, content-driven websites, showcasing its unique "Islands Architecture" and revealing upcoming features for handling dynamic content and improving the developer experience. Full video in comments 👇

My talk slides are available here hiroshi-talks.vercel.app/2025-10-25/1 also with source code in github.com/hi-ogawa/talks It was a great experience to talk with many awesome folks in person! Thanks @vuefes.bsky.social for the opportunity!

ViteConf 2025 was a blast! If you didn't catch up on all the highlights yet, then our recap post is what you need. ◆ Vite+ 👀 ◆ How Oxlint supports JS plugins ◆ A @vite.dev DevTools sneak peek ◆ State of @vitest.dev ◆ Using @rolldown.rs & Oxlint at scale ◆ ...and more voidzero.dev/posts/whats-...

Netlify CEO @biilmann.blog explains the critical shift from Developer Experience (DX) to the new paradigm of Agent Experience (AX), demonstrating how the next generation of web development tools must be built for AI agents to use effectively. Full videos in comments 👇

Watch Jessica Sachs explain and demonstrate Vitest Browser Mode, which tests components in an actual browser instead of headless tests. Full video in comments 👇

Watch Kenneth Skovhus talk about Linear's iteration culture that relies on good developer experience and speedy tools like Oxlint, Rolldown-Vite, and Vitest to enable fast feedback loops.

✅Announcing Vitest 4.0 ✅ Our latest Vitest update brings Browser Mode to stable, allowing you to test your UI in real browsers like Chrome. Also new: - Visual Regression Testing to catch unintended UI changes - Playwright Trace support for easier debugging voidzero.dev/posts/announ...

Senior performance engineer @kurtextrem.de talks about Framer's journey to adopting Rolldown and the chunking configurations used in production. Full video in comments⏬

Watch @pi0.io share how you can ship full-stack Vite apps with just one Nitro plugin that just works. Developers can enjoy automatic SSR integration, bundled index.html, native integration with Vite Environments API, and more. Full video in comments 👇

⚓ Oxlint now supports plugins written in JavaScript ⚓ Developers can customize and extend Oxlint using JavaScript, but at a speed approaching Rust, due to 'raw transfer' between Rust and JS, and other breakthroughs Many ESLint plugins can run without any modification. Read the full post👇

VoidZero's @erus.dev talks about the upcoming @vitest.dev features including the new report API and multi-browser configuration as well as what to expect in Vitest 4 🧪 Full video in comments

Watch @sxzz.dev demonstrate tsdown, the elegant library bundler. The key features, design philosophy, and how it simplifies/streamlines library development. Full video in comment ⏬