npx sv add @msw/sveltekit And just like that, you get mocking setup in your sveltekit app 😎🤟🏻

Come Ask me Anything about Agenti Engineering, Svelte or Agenti Engineering with Svelte 🧡

Svelte, Vue, et al right now

📊 LayerChart 2.0 is officially released! After ~16 months of development and 67 pre-releases, the official 2.0.0 release has been published! 🎉 This includes the Svelte 5 rewrite, CSS framework agnostic, improved API and state, numerous new components and chart types, and so much more!

Final episode of Agentic Engineering with Svelte is out! It's been a blast working on this series! 🧡

Also also...if you want to chat about Agentic Engineering (and Svelte obviously 😎) we organized a free AMA! Register and you'll get to ask me what my preferred framework is 😁

How I know I had a relaxing two weeks of vacation without access to my work laptop

In retrospect, this argument was always wishful thinking from React apologists - a last redoubt after every other piece of ground (usability, performance, etc) had been lost to better alternatives. If you can't convince people on merit, try to appear inevitable. Good strategy tbh! For a while anyway

your token costs: lower your server costs: lower your bandwidth costs: lower not to mention the fact that you'll ship in half the time and tear out less hair in the process. just use @svelte.dev, people. it's like other frameworks but better

First trillionaire also controlling AI, Fable first denying access to seemingly harmless prompts, now revoked by the government completely - Rich's risk predictions all became too real too quickly youtu.be/SmHgtyym6OA?...

🚨 SVELTEKIT 3 WORKSHOP KLAXON 🚨 this thursday I'll be at @frontendmasters.com talking through all the new stuff. join us! you can also find it in the Events channel of svelte.dev/chat master.dev/workshops/sv...

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Svelte is among the best-stewarded projects I've experienced, as a very-online open source tech observer over 15+ years The always-improving design is a treat. Async integration and remote functions are elegant, and recently {let/const, vite.config.ts eating svelte.config.js, and much nicer env. !!

New video explaining SvelteKit remote functions and working with real-time data using live queries 🔥 youtu.be/j9fh4WC0zHo

Please try this experimental feature. This should bring a big performance improvement, especially for large projects that use Svelte with TypeScript. If there are no major issues, we plan to make this the default in the next major version.

Some background: svelte.config.js was originally created so the VS Code extension knows about the compiler options and - more crucially - the preprocessors. They were very common back then because you e.g. had to use one to get Typescript support in Svelte. Nowadays

We are finally releasing the Agentic Engineering with Svelte series! Please take a look and let me know what you think! 🧡

Here's the project: I was looking at the caniuse page for invokers and had something like 83% coverage... I thought: I wonder if there are other features that have the same coverage, and maybe I'm already using it. So I built ifyouuse.com (no need to say it, but it's using Svelte 😎)

Say goodbye to svelte.config.js - you don't need it anymore! The newest version of SvelteKit allows you to configure everything via its Vite plugin, and VS Code, svelte-check and SvelteKit itself can all read from it. On file less cluttering your project root.

big progress on the @svelte.dev ESLint parser! @baseballyama.bsky.social added a new experimental flag that can result in an 8x speed up in some repos 🔥

SvelteKit arguably has a more sophisticated and flexible system for handling env vars than any other framework. We think we can do better though. Here's what we're working on: github.com/sveltejs/kit... Give it a read and let us know if you have feedback

If you think em dashes are the only sign you've just opened an unsupervised slop PR that has no soul I've got news for you

the single biggest criticism svelte has received over the years is 'you can't have multiple components in a file'. so we fixed it! by making them unnecessary. with declaration tags (svelte.dev/docs/svelte/...), snippets/each blocks/etc can have their own state: svelte.dev/playground/a...

Aaaand he's in - welcome to Svelte Ambassadors!

Maybe I’ll start re-posting this every other day or so. I know everyone is busy. But it’s our ecosystem. Either we take care of our communal garden or we don’t. sveltesociety.dev

prettier-plugin-svelte 4 is out! This is mostly a maintenance release: - Svelte 5 now required (using the modern AST now) - removed deprecated/obsolete formatting options - now with OIDC-based publishing

Had a few thoughts I needed to get out of my head this morning. www.jasnell.me/posts/open-s...

We've just published patch releases of devalue, Svelte, and SvelteKit that fix a number of vulnerabilities. No need to panic — they're all hard to exploit or reliant on experimental features — but we recommend updating as soon as you get a chance. More details in the advisories:

Yes! @svelte.dev goes from 🔴 -> 💚 on the Oxfmt side 🔥 You can now format your Svelte components with Oxfmt too. See oxc.rs/docs/guide/u... for more details

most of these github actions driven breaches are because of pull_request_target. here's some tips of what to look for when reviewing your own workflows. worth noting - it is safe, and necessary, when used correctly 🧵

I'm getting hyped on Svelte again. Not-too-practical-but-fun-example: synced bad apple Using `query.live` from SvelteKit's remote functions, super easy to do. Demo: sve.thomas.rocks/examples/bad...

If you want to see it in action see: sveltekit-query-live.ss10.dev

@svelte.dev is finally on Adopt Ring within Technology Radar www.thoughtworks.com/radar/langua..., so go and adapt!

about to fly to london for @cityjsconf.bsky.social. you should come! unless you don't write javascript for a living in which case you probably shouldn't anyway here's a 20% off link ti.to/cityjsconf-l...

First peek at Svelte 5 + NativeScript 🚀 Big thanks to @paolo.ricciuti.me, @svelte.dev, @syntax.fm and @mainmatter.com

not an april fools joke: svelte is no longer just a web framework (or rather, won't be once we merge @paolo.ricciuti.me's magnum opus). have seen some extremely cool demos of this

📊 Massive LayerChart update (6 months in the making…) Data-driven primitives, overhauled state (transform, brush, series, tooltip), 10+ new components (image, statistical, spatial), canvas improvements, chart export (png, svg), new docs, and so much more! next.layerchart.com/docs/guides/...

Our final beta for the Svelte integration is out. We made some breaking changes to the API to make it feel a little more idiomatic to Svelte, so please take a look and let us know if we got it right! beta.tinybase.org/guides/relea...

In an age of LLMs and streaming text, we need to stop trying to get markdown to play ball and restrict the syntax. I specced a stricter markdown sub(er)set several years ago and wondered if it was strict enough to support true streaming. Turns out penguin flavoured markdown was ahead of its time.

Want!!!!!

Svelte Chicago is back! Join us on March 24th at the M1 Finance office to hear Robert Ismo's talk: Web Serialization and SvelteKit. As always, fellow co-organizer @kenthropic.com will be there to find a way to throw shade at React. #Svelte #ChicagoTech guild.host/events/svelt...

It's been awhile since we talked @svelte.dev on the podcast! Join us with @paolo.ricciuti.me where we talk about some of the cool stuff they've been up to www.youtube.com/watch?v=2r25... open.spotify.com/episode/6dhV...

Great way to stay up to date on all things Svelte

Svelte is now officially a plugin in the Cursor marketplace! Just install the plugin to get: MCP, skills, custom instruction files, the file editor subagent! cursor.com/marketplace/...

Hey friends 👋 🎉 New *sv* version is out 🎉 We tuned the CLI help so: → humans get clearer commands & structure → AI can one-shot project scaffolding with your fav' add-ons 🤖 This was surprisingly fun to test 😄 Give it a try and tell us how it goes!

I made a p5.js wrapper for Svelte you can install with `npm i @‎sveltecraft/p5-svelte` or watch the video where I explain how it's used and making old libraries work in Svelte youtu.be/97bD9ZHwv2U

Modern CSS is just so awesome...all of this with view transitions! svelte.dev/playground/e...

Just merged a relatively significant set of changes to remote functions, especially `query`. It's fairly likely your next upgrade will break your app if you're doing anything decently advanced, but the errors should be pretty helpful/descriptive.

Just released svelte-spa-router version 5, one of the bigger libraries that was still stuck on Svelte 4. If that was your reason to not upgrade to Svelte 5, you can now. What other libraries are blocking you from upgrading to Svelte 5?

Rich and I just worked a combined 3 hours on a tricky bug. AI quickly found out where it breaks and proposed a fix. But it was the wrong fix - we took the time to find out what was the underlying reason and fixed that instead. Always think through what AI proposes to you.