Today Mainmatter’s own @chris.manson.ie and Marine are speaking about the #EmberInitiative at @EmberFest.eu in Brussels. If you’re in town and want to talk about upgrading your #Ember app to use all the modern build tooling (#Vite, #GJS, etc.) make sure to say hi!

. @nickschot.bsky.social is on stage at @emberfest.eu talking about integrating #emberjs with other frameworks like #react or #svelte. We’ve worked with a number of clients on the topic at @mainmatter.com in the past few years

Will be doing a short workshop at emberfest covering migration from 4.x to 5.x of EmberData/ @warp-drive.io It’ll include ModelFragments. We’ve made great progress and expect to have the path ready in the next few weeks, and we think we might be able to develop a codemod for much of it.

🚨⛏️ Call for assistance in @emberjs.com ⛏️🚨 We decided in the Tooling team meeting today to deprecate heimdalljs in ember-cli and hopefully remove it in ember-cli@7 🎉 This needs a RFC to be written and someone to implement the deprecation itself. Do you want to help out? Please get in touch!

If you aren't going to @emberfest.eu in September, let the FOMO begin 😜 Three talks diving into @warp-drive.io and I'm working on adding either a formal or informal workshop for folks looking at how to migrate onto the newer features.

We just merged a 3000 files / 75k lines of code PR in our 2017 @emberjs.com app that moved us from .ts + .hbs => .gts This would have never been possible without @embroider/template-tag-codemod and the work from the great @chris.manson.ie and other great members of the Ember.js community! 🫶

We just released the 1.0 for the whole sheepdog suite! @sheepdog/core and @sheepdog/vanilla didn't really had any breaking but @sheepdog/svelte did, and it's a welcome one...we are now using runes! 🎉 If you are on svelte 4 and want to use it we published the stores version under the `legacy` tag 🧡

Beginner-friendly? Advanced deep dive? Doesn’t matter, as long as it’s from the heart! Submit your talk here ➡️ emberfest.eu #EmberFest25 #EmberJS #GlimmerJS

Thinking about talking at EmberFest 2025? Well, the door is wide open, but not forever. 🐹 The Cfp deadline is August 1st. We’re looking for all things Ember: real-world stories, experiments, wins, fails, anything the community can learn from.

We updated the website with the gorgeous venue we've secured for this year: the Royal Flemish Theater. If you want to meet your favorite Ember peeps and help make EmberFest actually happen, reserve your spot—it‘s by far the best way to support the show: emberfest.eu

I just submitted a CFP to talk about @emberjs.com at a non-Ember conference 🎉 if anyone knows any conferences that have open CFPs that they think should have an Ember talk at please ping me and let me know

Seeing all of this, seeing companies like chromatic or Mainmatter being *this* invested in Svelte is also what gives me the long-term confidence in Svelte. The way @storybook.js.org support for Svelte 5 and Svelte-native stories evolved within a few months is insane! bsky.app/profile/rein...

So, some of you may know that recently I'm working full time on the svelte renderer API thanks to the company I work for ( @mainmatter.com ). This will unlock using Lynx to build native applications with svelte. There's still a lot of work to do but isn't a counter the mother of all apps? 🧡😍

My consultancy @mainmatter.com has some availability for #frontend projects starting in May. We have deep expertise in #svelte and #emberjs as well as the intersection of frontend and #rustlang, e.g. with build tools or #wasm. 1/🧵

Big wins from the Ember Initiative 🎉 @chris.manson.ie shares the latest wins from our ongoing work: Embroider@4 is now stable, @vite.dev is the default, there's a codemod to help you migrate, and we’ve audited the top 100 addons. 👉 mainmatter.com/blog/2025/04...

I just released Embroider@v4 from the @mainmatter.com team dinner using release-plan This is the start of the @vite.dev era of @emberjs.com 🎉

Today is Mainmatter Day and it’s rolling! 🟣 We started the day with workshops—working on our team and company. Remote work is great but nothing beats face-to-face time to shape the future of Mainmatter. #MainmatterDay #TeamTime #NotJustWork

We’re live with the Rust Munich Meetup from our Munich office! 🦀 Talks are kicking off soon, and the vibes are great at Mainmatter GmbH HQ. Join the stream & discussion remotely too ➡️ www.meetup.com/rust-munich/... Who's tuning in? 👀 #rustmunich #rustlang

Today I literally released a npm package on an airplane without any stress using release plan ✈️📦🎉 If you don't know already: release-plan is the best way to release any npm package 💪 I never release with anything else #releaseanywhere #releaseplan github.com/embroider-bu...

The tomster is out of the bag! EmberFest '25 is coming, and we have the dates, so mark them in your calendar: September 18-19 (Thu-Fri). We also opened early bird ticket sales, so grab a couple while we still have them: emberfest.eu

another achievement of the #emberjs initiative – ember-css-modules is no longer holding anyone back from switching to Vite 🎉

@nickschot.bsky.social gave a talk about ECM to ember-mirage migration, and this morning, our codebase has almost finalized its transition 🍾! This migration is required if you want to use the new build system based on the great Vite we all want and wait for!

This week was yet another great week for the @mainmatter.com Ember Initiative. We have been working with @discourse.org to get their app converted to more modern Ember technologies and we were able to convert the whole admin section of the app to use GJS 🎉 github.com/discourse/di...

It's kind of hard to communicate the magnitude of what we've been able to achieve here. Everyone in the Ember community now has a clear path to start running your apps in Vite: Update your app to at least 3.28 and then run the ember-vite-codemod mainmatter.com/blog/2025/03...

⚡ Vite support for Ember has been extended to 3.28! *and* there is a codemod to get you off the old build system 🎉 ✨ Excite!! Vite is now supported in: 3.28, 4.4, 4.8, 4.12, 5.4, 5.8, 5.12+ (LTS) (current: 6.3)

Last week I was super excited to announce that the @emberjs.com @vite.dev implementation now works all the way back to [email protected] and that we would "hopefully" go even further back. Well... we did it folks 🎉 The Ember Vite implementation now supports all the way back to [email protected] 🎉 😍 🐹

🚽🚀🌔 Release from *anywhere* 🧻🚢🏝️

Gravity is live 🪐 and we think you’re gonna love it. It’s a CI tool that keeps your build artifacts in check—so you don’t accidentally ship bloated JS bundles, oversized images, huge CSS files, or other assets. Built by @mainmatter.com Learn more ➡️ mainmatter.com/blog/2025/03... 🧵1/4

The @mainmatter.com team just released our first product 🙌 This goes back to a little script we ran on GitLab CI when we worked with @trainline.bsky.social many years ago 1/🧵

Happy Friday everyone 🎉 To celebrate the weekend the @emberjs.com @vite.dev implementation now supports back to [email protected] 🕺 If you are on [email protected] now is a great time to try the ember-vite-codemod mainmatter.com/blog/2025/03...

At @mainmatter.com we often hear from clients that they also want native support...let's fix this! With Lynx and a custom renderer API we should be able to unlock this and much much more for svelte! Excited to work on this 😍

We're proud to be investing in the future of @emberjs.com by supporting The Ember Initiative. As their ongoing efforts move Ember forward, we're happy to back this important work. Read more about The Ember Initiative: mainmatter.com/blog/2025/02...

Thanks to great work by @eaf4.com we have a fantastic codemod that auto-upgrades your whole Ember app to use <template> tag (a.k.a GJS). Today myself, @davidtaylorhq.bsky.social and Jarek paired on a massive PR to upgrade 3/4 of their Ember templates to the new format github.com/discourse/di...

Today has been great for the Ember Initiative 🐹 And I wanted to share why in a quick 🧵 I'm pretty happy to have @discourse.org as a backer at a tier that allows us to have a 2 hour pairing session every week. We can use this time to work on anything even tangentially related to the Initiative.

Keeping up with Svelte Summit Spring 2025? 👀 We’re excited to co-organize this event with @sveltesociety.dev , and we’ve started announcing speakers—the lineup is already looking amazing. 16 awesome speakers are up—go check them out ➡️ www.sveltesummit.com #sveltesummit #svelte

Want to add a new lint rule but gave up because fixing all existing files felt impossible? 🤔 Enter Lint to the Future—a way to progressively improve massive codebases without overwhelming PRs or ignored warnings. @chris.manson.ie shares how he’s applying it here ➡️

The Ember Initiative is here—an ongoing effort to modernize and evolve Ember. It builds on the success of the Embroider initiative. Excited to see where this takes us! 🐹 Full details from @chris.manson.ie ➡️ mainmatter.com/blog/2025/02... #EmberJS #WebDev

We have started the Ember Initiative 🎉 I would love to spend as long as possible dedicated to making Ember better for everyone, so if you know anyone who might want to back the Initiative send them this article 🚀 At the very least the more reposts we get on this the wider the reach ❤️♻️❤️

At @mainmatter.com we are always eager to give back to the ecosystem we are part of and we are trying to do the same for the svelte ecosystem (we started it already with @sheepdog/svelte)....so now i want to hear from you! What are your main frustrations with svelte? What library you wish existed? 🧡

Meet @paolo.ricciuti.me in Vienna next week and get adorable sheepdog.run stickers

The responsive-image.dev family got a new member! 🎉 👉 Use the new @svelte.dev image component in your Svelte/SvelteKit app to render responsive images, either with our @vite.dev plugin to process local images or with remote images from image CDNs, or both. responsive-image.dev

#CSS scroll-state() container queries in Chrome 133! @container scroll-state(stuck: top) { … } Read all about snapped, stuck and scrollable in this post: developer.chrome.com/blog/css-scr... ↪ nerdy.dev/scroll-state...

We now ship eslint 9 and flat config by default! In 6.1! blog.emberjs.com/ember-releas...

Yesterday we got the @emberjs.com RFC that will make @vite.dev the default build system for new apps accepted 🎉🎊🎉 We now have a plan that is all agreed and we just need to make it happen 💪 This is a great holiday OSS present for me 🎁🎄😍🐹

🎁 Ember v6 is released! Read about it here: blog.emberjs.com/ember-6-0-re...

📣 Just launched a (not so) new tasty project: responsive-image.dev. Ingredients: 🖼 Image component for @emberjs.com and @lit.dev (more to come)
 ⚙️ Process local images in @vite.dev or webpack, supporting WebP+AVIF and LQIP
 🌍 Load remote images from image CDNs like @netlify.com, Cloudinary or imgix

⚡ ✨ Vite ✨ ⚡ Gotta go fast!

Here is the code for my universal version of react-scan: github.com/NullVoxPo... Copy it / install it in to any - Svelte - Angular - Ember - React - Lit - Preact - Solid - etc App, and see what unneeded work might be being done! (Or see all the hidden work you're managing and forgot about!)

We are co-organizing #sveltesummit in May together with our friends from @sveltesociety.dev – join us in Barcelona 🤗

We are very excited to announce that the next Svelte Summit will finally be in-person again and happen on May 8 and 9, 2025 in Barcelona Spain! Tickets are now available and the Call for Proposals is open. Use code 'sveltmas2024' for a 20% discount until December 31. www.sveltesummit.com