We improved batching behavior in Signals-core.
If a signal goes A → B → A inside a batch, dependents will no longer re-run if the final value equals the starting value.
Example:
const count = signal(0)
batch(() => {
count.value = 1
count.value = 0
})
Good blog post from Carlos (a colleague) about a new proposed addition to Compression Dictionaries allowing short-lived HTML pages to continue to be used as compression dictionaries for longer:
dev.to/carlosmateom...
#webperf
New blog series: Blast Radius
We take real open-source PRs and run them through a 3D dependency graph to show what the diff missed.
First up: the Svelte PR that made the compiler 55% faster. 3 files changed. 2,036 affected.
codelayers.ai/blog/blast-radius-svelte-compiler-performance
Deno v2.7.2 is released
`deno install` is now dramatically faster
Full release notes at: github.com/denoland/den...
A clean looking graphic with sharp lines and crisp colour
The same graphic, but muddy and blocky. The previously sharp lines are blurry.
I think it's often overlooked that AVIF is also really good at flat colour & sharp edges.
Don't go straight for a lossless format just because it's the kind of image that would look bad as a JPEG.
Here's an 11kb image as an AVIF, vs JPEG XL.
JSR now lets you diff the generated documentation between released versions of a package, making it easy and clear what has changed in a visual manner!
Example: jsr.io/@david/gagen...
Can you spin environments in 200ms with all the dependencies installed and ready to use?
You can with snapshots in Deno Sandbox!
Do the setup once, reuse it forever.
See how in this demo with Python
youtu.be/mASEjxpuDTM
Curiosity is what fuels progress.
HTML might be getting a new type of tag, which… hasn't happened this millennium. Here's the new syntax, and how it works:
This is wild. AI is being weaponized against OSS maintainers by automatically writing angry blog posts when the AI's PR isn't merged.
cc @boshen.github.io
I love a good bug hunt. What a doozy. allenpike.com/2026/a-broke...
Seeing how quickly @npmx.dev came onto the scene and how many developers from different backgrounds came together to build it gives me hope for the future. The real value is always the people and the culture surrounding them.
Here is one of the dumbest things about vibe coding that I don't see a lot of people talking about
Imagine you're an open source maintainer and someone opens up a pull request against your repository that they vibe coded. They may or may not tell you they vibe coded it; it doesn't really matter… 🧵
The Graph view is cool but... The updates view is pretty awesome as well
One of the bigger challenges I have had promoting @solidjs.com is assuming developers have a general idea of how their tools work. I'd show off fine-grained rendering, and be met with "Isn't that how React works?" I'd find myself educating them more about their existing tools.
Deno Sandbox
◽ Volumes
◽ Snapshots
◽ Secrets
👉 See the announcement video for more
deno.co/announcing/s...
Great read by @danielchooper.bsky.social who just build his own built time visualization with minimal code
danielchasehooper.com/posts/syscal...
Oooo it's been a while since we had a new tag type for HTML! I'm hoping this can unlock things like declarative CSS highlights groups.google.com/a/chromium.o...
Congrats 🎉
Not sure. Haven't noticed a pattern so far. Waiting on network seems plausible although it seems odd that it freezes the UI too.
I'm surprised how often claude code just freezes. Like doesn't accept any input anymore, shows no update in the UI. It's completely dead. No high CPU usage either, so probably not an infinite loop.
Happens around 5 times per day for me.
Nah, you only need lifetimes when the language has references, see bsky.app/profile/stev...
oh god, that's nasty. Something malicious code would do
Yeah Go has lots of things going for it but I'm looking for something without GC. And I wish the type system would be more powerful in Go
Oh nice, that's the first time hearing about Moonbit. I have some reading to do! Thanks for sharing
That sounds like zig is only aimed at experienced devs.
Yeah, I think it should work without GC. GC has it's uses, but I basically just want a simpler and faster to compile rust 👀
And I know full well that Deno will always be written in Rust, but nonetheless I kinda want to explore alternative ways. And compile times are always an issue.
I'm at this stage too. What motivates me to keep pursuing it is the feedback loop. I might be biased but compiling a huge code base like Deno takes a looooot of time. This makes AI not as effective as it could be.
A faster feedback loop would make AI more effective
