Husband / Father of two / Founder @voidzerodev (acq. @cloudflare) / Creator @vuejs & @vite_js. Chinese-only alt: @yuxiyou
Singapore
Joined August 2010
- Tweets13.6K
- Following2K
- Followers317K
- Likes12.4K
Evan You retweeted
We are giving agents as much data as they need to improve Core Web Vitals, including Chrome code coverage.
App startup time, FCP and LCP are being significantly improved internally.
rolldown.rs/in-depth/perf-ki…
Evan You retweeted
Cloudflare is distributing the first $301,300 of the Vite Ecosystem Fund to open source projects and maintainers. cfl.re/4iwStY3
Evan You retweeted
Today is my first day at @voidzerodev / @Cloudflare. Excited to help build the dev tools of the future 🚀️
Evan You retweeted
Cloudflare is distributing $301,300 to open source projects & maintainers. This is the first round of sponsorships from the $1M Vite ecosystem fund we committed to earlier this year.
The recipients were selected by a panel of Vite, Vitest, Rolldown, Oxc, Vite+ core team members including maintainers not employed by Cloudflare.
Open source is more important than ever as agents make software development more accessible & widespread. These financial sponsorships are a small thank you & recognition for all the hard work.
We’ll continue to sponsor more open source maintainers in upcoming quarters.
blog.cloudflare.com/launchin…
Evan You retweeted
When we joined @cloudflare, we announced a $1M fund for the open source ecosystem around @vite_js.
Today we're distributing the first $301,300 to 44 projects and maintainers, from critical dependencies to contributors.
No project thrives in isolation 💜
All details in our blog post
blog.cloudflare.com/launchin…
Evan You retweeted
Rolldown v1.3.1 is out 🎉
Another huge performance boost for Rolldown. Big thanks to @mattlewis92_ and @yagiznizipli for their contributions! 🙏
Glad I’m on PVE when I peacefully strolled through Ashenvale to the Barrens
Evan You retweeted
I wrote and solely maintain rolldown-plugin-dts. An @AnthropicAI engineer contributed two PRs using Claude Code.
Meanwhile, Anthropic suddenly suspended my own Claude account—the tool I use to maintain that same project. The irony is hard to miss.
🧵 1/4
Evan You retweeted
The crazy part is that replacing magic-string with muggle-string noticeably improved the Vue compiler’s performance, memory use, and source map accuracy.
github.com/vuejs/core/pull/1…
Evan You retweeted
Rolldown v1.3.0 is out 🎉
Rolldown now has experimental support for import attributes. Try it with `experimental.importAttributes: true`.
We also released a new package, `@rolldown/perf-kit`. It builds on Rolldown's build report to help coding agents find what slows your app down. On 3 open-source Cloudflare Workers, an agent using perf-kit made startup up to 30× faster than the same agent working alone, while spending 60% less on tokens.
This release also includes lots of bug fixes and improvements!
Evan You retweeted
It’s been wild month…
- void
- ViteConf
- tsrs
- vitest 51.
Tales from the Void: October 2026 Recap is out 🎉
- tsrs: our Rust port of @TypeScript, up to 8x faster
- The Void SDK and platform are open sourced
- @vitest_dev 5.1 is out and can rerun only affected tests
- The first @ViteConf talks are on YouTube
- and more from the community 👀
voidzero.dev/posts/whats-new…
Evan You retweeted
In the next version of Rolldown, plugin changes from `generateBundle` and `writeBundle` sync back to Rust on demand: only what changed is sent.
Preparing them in a large Vite app: 1,015ms → 39ms, 26× faster.
Thanks @yagiznizipli for the contribution!
X web now running on Vite!
The web rewrite is working.
On a slow connection, the old X web took more than 22 seconds to show the first post on a profile. The new X web does it in 2.7 seconds. Here's how we did it, and how we're rolling it out one country at a time.
blog.x.com/en/engineering/re…
Evan You retweeted
Hard limits rolling out slowly…
.@Cloudflare Spend Limits in action.
Time to investigate and fix the potential slop that was using that much DO🫡
Evan You retweeted
Tales from the Void: October 2026 Recap is out 🎉
- tsrs: our Rust port of @TypeScript, up to 8x faster
- The Void SDK and platform are open sourced
- @vitest_dev 5.1 is out and can rerun only affected tests
- The first @ViteConf talks are on YouTube
- and more from the community 👀
voidzero.dev/posts/whats-new…
Evan You retweeted
🆕 RELEASE:
- github.com/oxc-project/oxc/r…
- github.com/oxc-project/oxc/r…
Do you believe there are 50+ perf improvement commits? 🚀
Evan You retweeted
The Oxc team just made Rolldown's bundling benchmarks another 3% to 6% faster 😮
Most of the gain comes from oxc-parser.
