Article summary — original
Four Months After Cloudflare Acquisition, VoidZero Delivers Toolchain Upgrades and Launches Vite+ 1.0
Four months after joining Cloudflare, VoidZero reported on its open-source progress, highlighting over 80 releases, extensive performance upgrades across its JavaScript tools, the release of Vite+ 1.0, and an expanded funding commitment to the open-source ecosystem.
VoidZero has shipped more than 80 releases and closed over 1,200 issues across Vite, Vitest, Rolldown, and Oxc since joining Cloudflare.
Key performance milestones include the Rust-based Oxc React Compiler, Vitest 5, stable type-aware linting via tsgolint, and Prettier-compatible Oxfmt.
Vite+ reached version 1.0 to unify the toolchain, while Cloudflare added another $1M to open source alongside an initial $1M Vite ecosystem fund.
Substantial Performance Upgrades Across the Toolchain
VoidZero introduced several high-speed tools designed to lower compilation, linting, and testing bottlenecks. The newly shipped Oxc React Compiler runs 10x faster than the Babel implementation with lower memory consumption. In testing, Vitest 5 reduces execution durations by double-digit percentages, while tsgolint brings stable type-aware linting to Oxlint at 12 to 18 times the speed of ESLint with typescript-eslint. In addition, Oxfmt provides Rust-rewritten formatters for JSON, CSS, SCSS, Less, GraphQL, and YAML that maintain Prettier compatibility while dramatically improving formatting speed.
Vite+ 1.0 Launch and 'Bundled Dev' Mode
To minimize developer decision fatigue, VoidZero launched Vite+ 1.0, which bundles Vite 8, Vitest 5, Rolldown, Oxlint, Oxfmt, and task caching into a single unified package with sensible defaults. In parallel, VoidZero is advancing its experimental 'Bundled Dev' mode (formerly Full Bundle Mode), which employs Vite's production bundler during active development. Shaped by massive codebases like Cloudflare's dashboard, Bundled Dev aims to cut dev server latency and reduce network overhead in remote sandboxes.
Agent-Oriented Performance and Open-Source Commitments
VoidZero noted that optimizing developer tool performance increasingly targets AI agents, where slow type-checking and builds stall automated feedback loops. Cloudflare and VoidZero also reaffirmed their open-source commitments under the Open Source Pledge; following an initial $1M allocation for a Vite ecosystem fund, Cloudflare committed an additional $1M to open source. Upcoming initiatives include a 3x speedup for Oxc's parser, a redesigned Rolldown chunking algorithm, and an open-source, self-hostable release of the deployment platform Void.
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When [VoidZero joined Cloudflare](https://blog.cloudflare.com/voidzero-joins-cloudflare/) four months ago, we made a commitment to open source, promising that Vite, Vitest, Rolldown, Oxc, and Vite+ will stay open source, vendor-agnostic, and community-driven. As part of Cloudflare’s Birthday Week, where Cloudflare gives back to the Internet, we thought it’d be a good time to check in on how we’ve been doing against this commitment.
In the four months since VoidZero joined Cloudflare, we’ve shipped more than 80 releases, closed over 1,200 issues, and landed some big performance improvements, including:
On top of this, [Vite+](https://viteplus.dev/), which unifies the entire toolchain with a set of great defaults, is now 1.0. And we’re making progress towards shipping [“Bundled Dev” (f.k.a. Full Bundle Mode)](https://vite.dev/blog/announcing-vite8-1#experimental-bundled-dev-mode) — a new development mode that has been shaped by working with customers with massive web applications, including Cloudflare’s own dashboard. By being part of Cloudflare, our engineering team gets a much better view into scenarios that only occur in massive codebases.
VoidZero’s mission is to make the next generation of JavaScript developers more productive than ever before. And in 2026, that means making developers’ agents faster.
Developer experience and performance were always about improving the feedback loop while creating software. But now when we optimize for developer experience, we no longer just optimize for humans — we optimize for agents. And as inference gets faster, the speed of type-checking, linting, or building the code becomes the bottleneck again. The longer those processes take, the longer an agent has to wait before making progress and completing its goals.
VoidZero has always been focused on performance, but this new era of software has given us even more reason and motivation to make the entire toolchain faster for both agents and humans. And since the tools in the VoidZero toolchain are built on each other, from the compiler (Oxc) to the bundler (Rolldown) to the build tool (Vite), the linter (Oxlint) and the test runner (Vitest), any optimization at one layer automatically benefits everything built on top.
We’ve recently shipped the [Oxc React Compiler](https://oxc.rs/docs/guide/usage/transformer/react-compiler.html), a rewrite of the [React Compiler](https://react.dev/learn/react-compiler), based on the React team’s rewrite in Rust. It is 10x faster than the original Babel implementation, uses less memory, and has a more complete implementation with better error handling. If you use Vite, you can enable the Oxc React Compiler by installing the `oxc-transform-react` package and enabling the `compiler` flag:
[Vitest 5](https://vitest.dev/blog/vitest-5.html), released in September, cuts test times by double-digit percentages across many common scenarios.
`mockImplementation`.`--repeats` flag to help find intermittent failures.
[tsgolint](https://oxc.rs/blog/2026-07-22-type-aware-linting-stable.html), the type-aware linting engine behind Oxlint, is now stable. It catches bugs that require TypeScript type data while running 12 to 18 times faster than ESLint with typescript-eslint.
Enable type-aware linting and TypeScript diagnostics in your Oxlint config:
[Oxfmt](https://oxc.rs/docs/guide/usage/formatter.html) brings the speed of the Oxc toolchain to formatting. We rewrote its JSON, CSS, SCSS, Less, GraphQL, and YAML formatters in Rust, making Oxfmt many times faster than Prettier, while keeping Prettier-compatible output and ergonomics.
We’ve made progress towards shipping [“Bundled Dev” (f.k.a. Full Bundle Mode),](https://vite.dev/blog/announcing-vite8-1#experimental-bundled-dev-mode) which uses Vite’s production bundler during development. This should lead to significant dev server speed-ups in larger applications and reduce network overhead when working with remote sandboxes.
We’re looking forward to bringing Bundled Dev out of experimental status soon. Cloudflare’s Dashboard already uses Bundled Dev for all internal developers.
Speeding up tools is one way of making humans and agents ship software faster. Another way is by reducing decision fatigue (“Which linter shall I use?”) and providing great defaults. We are excited to announce that [Vite+ is now 1.0](https://voidzero.dev/posts/announcing-vite-plus-1-0). Vite+ bundles all of VoidZero’s tools together into a single unified and fast toolchain.
Vite+ ships with Vite 8, Vitest 5, Rolldown, Oxlint, Oxfmt and task caching built in, and comes with great defaults. Check out the [Getting Started guide](https://viteplus.dev/guide/) to try it out today.
VoidZero was born in open source, and we believe a more sustainable open-source ecosystem benefits everyone. [VoidZero is a proud member of the Open Source Pledge](https://opensourcepledge.com/members/voidzero/) and as part of Cloudflare, we have the opportunity to expand that impact.
Cloudflare committed $1M to a Vite ecosystem fund to support maintainers and contributors in the original announcement. Since then, Cloudflare has [committed an additional $1M to open source](https://blog.cloudflare.com/community-program-refresh/). Together, we’re doubling down on open source.
There is more to come! Features we plan to ship in the next few months include major improvements to Oxc’s parser with up to 3x potential speedup, a re-designed chunking algorithm in Rolldown, and an open-source, self-hostable version of Void, the Vite-native deployment platform built on top of Cloudflare. Cloudflare and VoidZero both recognize our responsibility that we have to developers, and we do not take the community’s trust in us for granted. We’re in this for the long haul.
We are excited to keep shipping faster tools, and will continue to make every decision with the community in mind, just like we did when raising venture capital, or when we open sourced Vite+, or when we joined Cloudflare. Thank you for continuing to trust us with your projects and apps, supporting us, and building with us.