Cloudflare + VoidZero: The Next Chapter for JavaScript Tooling

Today, I’m excited to share that VoidZero has been acquired by Cloudflare.

I’m incredibly happy for Evan You, the VoidZero team, and the broader open source community. This one is special on a personal level: I’ve admired Evan’s work since my days as a software engineer, so it has been a privilege to be part of the VoidZero journey over the last three years.

I first met Evan in August 2023. We were introduced by Charlie Marsh, the founder and CEO of Astral. Charlie called me after speaking with Evan and basically said that I had to meet him.

When Evan and I first connected, I was so excited that instead of a Zoom meeting, I got on a plane that night to Singapore to meet him in person. Beyond learning that Singapore is much hotter and more humid than I had fully appreciated, I got to spend time with someone who was already one of the most respected people in open source. Evan had created Vue, one of the defining frontend frameworks of the last decade. Then he created Vite, which quickly became one of the most loved projects in modern web development.

Vite grew the way the best open source projects grow. Developers tried it, felt the difference immediately, and told other developers. It was better, faster, framework-agnostic, and compatible with existing tooling.

Even in those early conversations, it was clear that Evan was thinking well beyond Vite as a single tool. JavaScript had become one of the largest developer ecosystems in the world, but the tooling around it had grown increasingly fragmented. Developers were stitching together bundlers, compilers, linters, formatters, test runners, package managers, framework integrations, and deployment workflows. Other ecosystems, like Rust with Cargo, showed how powerful a coherent toolchain could feel. The opportunity was not just to make one piece of that stack faster, but to make the whole toolchain feel more coherent.

That became the foundation for VoidZero: a fast, unified toolchain for JavaScript and TypeScript that respected the community and workflows developers already depended on. Evan understood that attempts to rethink developer tooling often fail when they ask people to abandon too much. Vite had earned trust by meeting developers where they were and making their existing workflows better. VoidZero was built around extending that same philosophy across the broader toolchain.

Evan You and Casey Aylward speaking at Accel Connect: Open Source in May 2024

As an early-stage investor, you look for unfair advantages. VoidZero had one in Evan. Few people had the combination of technical credibility, community trust, and product instinct to take on something as ambitious as a unified JavaScript toolchain.

That advantage showed up quickly in the team he built. I often ask founders to write down their dream hires, even if the list feels unrealistic. Evan made his list, then recruited many of the people on it. The result was a team with both the ambition to reshape JavaScript tooling and the ability to ship at an extraordinary pace.

Over the last few years, that pace has been obvious. The team continued to improve Vite and Vitest, built Rolldown, and advanced oxc as a Rust-based foundation for JavaScript tooling that is increasingly used beyond VoidZero’s own projects. Vite alone now sees more than 100 million weekly downloads. But the more important story is that the broader toolchain VoidZero set out to build is starting to come together.

As VoidZero’s ambitions expanded from local development tooling toward the full path from idea to production, Cloudflare started to feel like a natural next chapter. It gives Evan and the team room to keep pushing the JavaScript toolchain forward while connecting to the infrastructure layer where modern applications run. Importantly, Vite, Vitest, Rolldown, Oxc, and Vite+ will remain open source and MIT-licensed, with Evan and the team continuing to lead the projects.

As AI changes how code gets written, the need for fast, reliable tooling around that code only becomes more important.

When I got on that flight to Singapore in 2023, it was because Evan was asking the right questions about where JavaScript tooling needed to go next. He was ambitious, but also practical, and always deeply respectful of the open source community. It has been a privilege to watch him and the VoidZero team build from that starting point. It still feels like they are just getting started.