Thrilled to announce... devblogs.microsoft.com/typescript/typ…

My talk about collecting metrics beyond Web Vitals from Mozilla's performance.sync() event is now available on YT ➡️ youtu.be/Lu9OtuRJ0QI Especially interesting for sites that hydrate content, like w/ React ⚛️. There's so much more to monitor for UX than just LCP/INP/CLS.

10 years after its introduction, V8's Turbofan will (slowly) be replaced by "Turboshaft" 😲

Two recently published blog posts - great performance reads: 1) How Preply optimized their Next.js app medium.com/preply-enginee… 2) CKEditor made their editor 800% faster, while aiming for 40%. Oups? ckeditor.com/blog/how-we-ma… I've collected more of those ➡️ github.com/kurtextrem/awe…

Someone snap this guy up. He's one of the best. Hire him before someone else does.

Maybe Marc Elsberg was onto something with his novel en.wikipedia.org/wiki/Blackout_… > The novel starts with a collapse of electrical grids across Europe, plunging the population into darkness and disaster. One of my favorite books btw

⚡ Lighthouse (incorrectly) punishes preloading If you’re like me, you probably struggled with Lighthouse scores at least once. “I already optimized everything; why is my score still yellow?” Often, the cause is there’s more to optimize. But sometimes, it’s Lighthouse itself.

CSS uses a complex algorithm to decide how to animate transforms. If you get it wrong, as many folks do, you end up with an unnatural animation. Here's how it works, and how to avoid the pitfalls. jakearchibald.com/2025/animating…

Always great to see recent stats about web performance @ #GoogleIOConnect. Improving web performance saves human years.

I was reading a HN post about a new Chrome header `x-browser-validation` that appeared in the wild. The quality of the discussion is just absolutely abysmal, but it turns out to be quite interesting: - I first tried to validate if the post is actually talking about something

oxlint + tsgolint = no slow down! no-floating-promises completes 4.4k files in 3.2 seconds, in the vscode repo. typescript-go is the future, all credits to the ts-go team! We just glued everything together 😀 github.com/microsoft/type…

v8 just dropped a 2x perf improvement on JSON.stringify using time tested performance techniques. - SIMD/SWAR to find escape characters - better memory management to avoid memcpy - fast path analyzing, eg: ASCII-only strings are 1-byte chars instead of 2-byte

🚨 #ReactJS devs: with the new React Compiler, naming matters! If your custom hook returns a ref, add a Ref suffix: const myRef = useMyHook() ✅ const myVal = useMyHook()❌ Without it, the compiler assumes .current access — breaks memoization! #ReactCompiler #reactnative

Rolldown has a great chunking API ... and I might have been involved in getting it to where it is today 🧑🏼‍🍳 Looking forward to sharing how we're using Rolldown at @Framer.