Lifestyle
VoidZero's four months at Cloudflare: Vite+ 1.0, Vitest 5 and faster open-source JavaScript tools
On September 28, 2026, the Cloudflare Blog reported on VoidZero, the team behind Vite and related tools that developers use to build and test websites. It covered Vite+ 1.0, Vitest 5, a stable tsgolint and another US$1 million pledged to open source. The changes mainly affect developers, and ordinary users need to do nothing.
About 6 min read
What happened
On September 28, 2026, the Cloudflare Blog published a post under Evan You's byline. It was part of Cloudflare Birthday Week, which Cloudflare describes as a time when it gives back to the Internet. The post reviews what VoidZero has done in the four months since joining Cloudflare. VoidZero develops free, open-source tools that programmers use to build JavaScript websites and apps, including Vite, Vitest, Rolldown and Oxc. According to the Cloudflare Blog, VoidZero promised when it joined that these tools and Vite+ would remain open source, vendor-neutral (not tied to any one company's services) and community-driven. The post is a progress check on that promise.
According to the post, the team shipped more than 80 releases and closed more than 1,200 issues during those four months. The headline item is the 1.0 release of Vite+. Cloudflare says Vite+ bundles Vite 8, Vitest 5, Rolldown, Oxlint, Oxfmt and task caching, bringing VoidZero's tools together into a single toolchain. A toolchain is the set of tools a developer uses together to write, check, test and build code.
Read the full description
Sources are collected, independently checked, then reviewed by Jev.
Tool updates at a glance
| Tool | This update | What Cloudflare says it brings |
|---|---|---|
| Oxc React Compiler | Released in August; a rewrite of the React Compiler based on the React team's Rust version | 10 times faster than the original Babel implementation, with lower memory use |
| Vitest 5 (test runner) | Released in September; adds vitest doctor, Trace View, vi.when and more | Up to 50% faster than Vitest 4 |
| tsgolint (type-aware linting engine behind Oxlint) | Now stable; supports 59 of typescript-eslint's 61 type-aware rules | 12 to 18 times faster than ESLint with typescript-eslint |
| Oxfmt (code formatter) | JSON, CSS, SCSS, Less, GraphQL and YAML formatters rewritten in Rust | 7 times faster than Prettier, with Prettier-compatible output |
| Bundled Dev | Still experimental; uses Vite's production bundler during development | Should significantly speed up the dev server in larger apps; Cloudflare's own dashboard already uses it for all internal developers |
| Vite+ | 1.0 released | Bundles Vite 8, Vitest 5, Rolldown, Oxlint, Oxfmt and task caching |
A linter scans code for likely mistakes. A formatter tidies code into a consistent layout. A bundler packs many code files into a few that a browser can load. According to the Cloudflare Blog, Vitest 5 is faster, and it also fails tests whose async assertions were never awaited, meaning checks that could otherwise be skipped without anyone noticing. It also adds a --repeats flag to help find intermittent failures. The aim is fewer cases where tests appear to pass while problems stay hidden.
Why this matters for AI agents
AI agents are software that writes and changes code on a developer's behalf. The Cloudflare Blog post notes that as AI inference gets faster, other steps become the bottleneck again: type checking (confirming values are used consistently), linting and builds. The longer these steps take, the longer an agent must wait before it can continue. The post also explains that VoidZero's tools are built in layers. The Oxc compiler and the Rolldown bundler sit at the bottom, with the Vite build tool, the Oxlint linter and the Vitest test runner above them. An improvement at any layer benefits the tools built on top.
For general readers, this means the development work behind many websites and apps may get faster. If developers wait less for tests and builds, they could in theory fix bugs and ship updates more quickly. This is a behind-the-scenes change to developer tools, and ordinary users do not need to do anything.
Open-source commitments and what comes next
According to the Cloudflare Blog, Cloudflare committed US$1 million to a Vite ecosystem fund in its original announcement. The fund supports maintainers and contributors. Cloudflare has since committed an additional US$1 million to open source. The post also says VoidZero is a member of the Open Source Pledge.
- Major improvements to the Oxc parser, which Cloudflare says could make it up to 3 times faster
- A redesigned chunking algorithm for Rolldown, which decides how code is split into files
- An open-source, self-hostable version of Void
- Moving Bundled Dev out of experimental status
The above are future plans listed by the Cloudflare Blog. They have not shipped yet, and actual timing and content may change.
Frequently asked questions
I don't write code. Does this news affect me?
Only indirectly. These are tools developers use to build and test websites. If the announced speed-ups hold up, development work may get faster, but ordinary users do not need to change anything.
Are these tools still open source now that VoidZero has joined Cloudflare?
According to the Cloudflare Blog, VoidZero has promised that Vite, Vitest, Rolldown, Oxc and Vite+ will remain open source, vendor-neutral and community-driven. This is the companies' own statement and commitment, not third-party confirmation.
Can the speed figures in the post be trusted?
All of these figures come from the Cloudflare Blog and were published by the development team itself. The post does not cite independent test results. Actual results vary by project, so developers should rely on measurements from their own projects.
Is Bundled Dev finished?
No. According to the Cloudflare Blog, Bundled Dev is still an experimental feature, and the team says it hopes to take it out of experimental status soon. Cloudflare's own dashboard already uses it for all internal developers.
Which tools are included in Vite+ 1.0?
According to the Cloudflare Blog, Vite+ 1.0 bundles Vite 8, Vitest 5, Rolldown, Oxlint, Oxfmt and task caching.
Browse the latest news in this topic
Lifestyle
Cloudflare launches Traces in public beta: site operators can follow every step a request takes through the platform on one timeline
On October 2, 2026, Cloudflare announced the public beta of Cloudflare Traces. Website operators and developers using Cloudflare can see a request pass through security rules, caching, routing and the origin server on a single timeline, making it easier to find why a request was blocked or slowed. New pricing takes effect on December 1, 2026. Information comes from the official Cloudflare blog.
Lifestyle
Cloudflare launches Web Search API via AI Gateway, requiring search partners to follow its crawler rules
On October 2, 2026, Cloudflare announced a Web Search API that lets AI agents query live web information through AI Gateway. The first partners are Ceramic.ai, Exa and Linkup. Cloudflare says these partners' crawlers must meet its Verified bots requirements and cite sources. This matters both to developers building AI applications and to website owners whose content may be crawled.
Lifestyle
Cloudflare open-sources Streamline: a demo of using its cloud services to add graphics to live streams and burn subtitles into videos
On October 2, 2026, Cloudflare launched and open-sourced Streamline, a developer playground showing how developers can combine Stream, Workers, Containers and Durable Objects to build their own video processing pipelines, such as adding graphics to live streams in real time or adding subtitles to videos. This article explains what it is, how it works, its limitations, and what it means for viewers and developers.
Lifestyle
Google unveils Gemini 4 Argon: cyber defenders get it first, everyone else still has to wait
On September 30, 2026, Google announced Gemini 4 Argon, which it calls its new frontier (most advanced) AI model. For now it is available only to trusted cyber defenders through the Fairwind Program. Here is what Google says the model can do, what it will cost developers, how Google says it is managing the risks, and what it means for everyday users. All figures come from Google itself.
Latest travel guides
GuideTokyo
Where to Stay in Tokyo: Comparing Shinjuku, Ueno, Tokyo Station, Shibuya, Asakusa, Ikebukuro, and Ginza, Plus Airport Access, Accommodation Tax, and Luggage Delivery
Where should you stay in Tokyo? Compare Shinjuku, Ueno, Tokyo Station, Shibuya, Asakusa, Ikebukuro, and Ginza by the same criteria: access from Narita and Haneda, transit routes, nearby attractions, neighborhood character, and who each area suits. Includes a comparison table, a Yamanote Line diagram, Tokyo’s accommodation tax as verified in 2026/9 (changing to 3% in 2027/4), and Airport TA-Q-BIN luggage shipping rules.
- Budget
- Hotels
GuideTokyo
How to Choose Tokyo Transit Passes: Are Suica, Welcome Suica, the Tokyo Subway Ticket, and the JR Pass Worth It?
On a first Tokyo trip, start with an IC card and pay per ride (Welcome Suica has no deposit and is valid for 28 days). If you take four or more subway rides in a day, add a 72-hour Tokyo Subway Ticket for 2,000 yen; a JR Pass is never worthwhile if you stay in Tokyo and do not go to Kansai. See what TOURIST PASMO, Suica on iPhone, and the Tokyo Metro day pass do and do not cover, with a decision chart. Prices verified in September 2026.
- Transport
- Budget
GuideTokyo
Tokyo Disneyland and DisneySea Guide: Ticket Prices, Fantasy Springs, Disney Premier Access (DPA), Standby Pass, and Which Park to Choose for Your First Visit
Tokyo Disney one-day Passport prices vary: most weekdays in 9/2026 cost ¥9,900 and weekends ¥10,900. At 14:00 daily, tickets go on sale for the same date two months later. Free Priority Pass is no longer on the official service list; only paid Disney Premier Access (¥1,000–3,500 per person per use) shortens waits. Covers hours, the 25th anniversary, Standby Pass, Entry Request, Fantasy Springs access and first-visit park choice; checked on the official site in 9/2026.
- Itineraries
- Family