Four months of VoidZero at Cloudflare: making the open-source JavaScript toolchain faster for all humans and agents

What happened

Since joining Cloudflare, VoidZero has delivered more than 80 releases that drastically speed up JavaScript compilation, linting, and testing. Full Bundle Mode) — a new development mode that has been shaped by working with customers with massive web applications, including Cloudflare’s own dashboard. Cloudflare is an information and communications technology company based in San Francisco.

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.

A faster developer experience for humans and agents Developer experience and performance were always about improving the feedback loop while creating software. And as inference gets faster, the speed of type-checking, linting, or building the code becomes the bottleneck again.