--- title: "What's new in Svelte: April 2024" description: 'Svelte Summit Spring on April 27! Plus: Maps, Dates and Sets' author: Dani Sandoval authorURL: https://dreamindani.com --- Spring is just around the corner (for half the globe at least), which means [Svelte Summit Spring](https://www.sveltesummit.com/) is coming soon! The event will take place on April 27 and could feature you (yes you!). The call for proposals is happening now so submit a talk (or three!) at [this form](https://www.sveltesummit.com/2024/spring/submit). Also, this month, a ton of new features have been merged into Svelte 5 to make it the best version of Svelte yet. We'll get into them all below, so let's jump right in! ## What's new in Svelte [Svelte 5 is in preview](https://svelte-5-preview.vercel.app/docs/introduction) and gets closer to release every day. Below, you'll find some highlights from its [changelog](https://github.com/sveltejs/svelte/blob/main/packages/svelte/CHANGELOG.md): - The new `Map`, `Date` and `Set` classes can now be imported from svelte/reactivity and used just like their native counterparts to improve tree-shaking and make these objects fit better into Svelte's reactivity model (**5.0.0-next.79/67/76**,, [Docs](https://svelte-5-preview.vercel.app/docs/runes#state-frozen-reactive-map-set-and-date), [#10803](https://github.com/sveltejs/svelte/pull/10803), [#10622](https://github.com/sveltejs/svelte/pull/10622), [#10781](https://github.com/sveltejs/svelte/pull/10781)) - state/derived/props can be explicitly exported from components again (**5.0.0-next.62**, [#10523](https://github.com/sveltejs/svelte/pull/10523)) - `bind:value` now allows for a dynamic `type` attribute - fixing issues with common input bindings (**5.0.0-next.66**, [#10608](https://github.com/sveltejs/svelte/pull/10608)) - `SSR` HTML mismatch validation has been improved and provides clearer error messages (**5.0.0-next.69**, [#10658](https://github.com/sveltejs/svelte/pull/10658)) - **Breaking:** Slots inside templates with a `shadowrootmode` attribute are now preserved (**5.0.0-next.73**, [#10721](https://github.com/sveltejs/svelte/pull/10721)) - **Breaking:** The `$props()` no longer accepts a generic type argument. Instead, component authors should type their props like any other variable declaration (**5.0.0-next.76**, [#10694](https://github.com/sveltejs/svelte/pull/10694)) - The new `$bindable` rune allows parents to `:bind` to a component's prop in addition to using them as regular props ([Docs](https://svelte-5-preview.vercel.app/docs/runes#props-bindable), [#10851](https://github.com/sveltejs/svelte/pull/10851)) - The webkitdirectory DOM boolean attribute is now supported (**5.0.0-next.81**, [#10847](https://github.com/sveltejs/svelte/pull/10847)) - Form resets are now taken into account for two way bindings (**5.0.0-next.82**, [Docs](https://svelte-5-preview.vercel.app/docs/breaking-changes#other-breaking-changes-bindings-now-react-to-form-resets), [#10617](https://github.com/sveltejs/svelte/pull/10617)) ## What's new in SvelteKit Just bugfixes this month! For all the changes in kit, check out the [CHANGELOG](https://github.com/sveltejs/kit/blob/main/packages/kit/CHANGELOG.md). --- ## Community Showcase **Apps & Sites built with Svelte** - [notepad](https://www.usenotepad.com/) is a workspace for freelancers. Providing time tracking, tasks, reports, invoices and contacts all in one tool. - [Tokenbase](https://github.com/mateoroldos/tokenbase) is a free tool for creating, managing and distributing Design Tokens. Easily create your Design Systems and export them to code in a few clicks. - [MelloOS](https://mellobacon.github.io/mello_os/) is a fake OS desktop in the style of Windows 95 - [PowerHound](https://powderhound.io/) is an app for tracking snow conditions across Colorado's ski resorts and backcountry - [ProductSurveys](https://productsurveys.io/) gathers user feedback directly inside your product - [WAIfinder](https://github.com/nestauk/dsp_waifinder) is an interactive map shows entities operating in the AI industry in the UK - [talkmedown](https://talkmedown.net/) is an emergency landing survival game using SvelteKit UI and Three.js graphics. - [Bird Flapping](https://github.com/zonetecde/bird-flapping) is that game with a flapping bird (not to be confused with FlappyBird) - [Minesweeper](https://codeberg.org/wires5210/minesweeper-funnymode) FUNNYMODE is minesweeper, but FUNNY - [Routickr](https://www.routickr.com/) is a habit-tracking app with Firefox and Chrome extensions **Learning Resources** _Featuring Svelte Contributors and Ambassadors_ - Svienna (Svelte Society Vienna): - [Domenik Reitzner - A brief history of prototyping](https://www.youtube.com/watch?v=auqkebVQYXE) - [Lukas Stracke - Building an Error and Performance Monitoring SDK for SvelteKit](https://www.youtube.com/watch?v=N8Hs-LVL_f8) - [Jean Yves Couët - Are you on the right route? ](https://www.youtube.com/watch?v=K8sKpMSCOiE) - [Lucas Martin - Using SvelteKit to Build An Interactive Portfolio](https://www.youtube.com/watch?v=wAttcVDP4Ec) - This Week in Svelte: - [22 Mar 2024](https://www.youtube.com/watch?v=QiAMLIyM894) - [8 Mar 2024](https://www.youtube.com/watch?v=_vQVkOa5K-s) _To Read/Watch_ - [How we built our 41kb SaaS Website](https://criticalmoments.io/blog/how_we_built_our_marketing_page) by Critical Moments - [Migrating a personal homepage to Svelte](https://jakeout.com/posts/2024-03-04-svelte) by Jake Ouelletee **Libraries, Tools & Components** - [Svisualize](https://svisualize.dev/) is a VS Code Extension that visualizes your components as you code - [Neel/UI](https://github.com/aidan-neel/neel-ui) is a shadcn-inspired set of customizable components that you can copy and paste into your SvelteKit apps - [BLICKCSS](https://blick.netlify.app/) is a small (~30kb) CSS library to build great websites and web apps quickly and easily That's it for this month! Feel free to let us know if we missed anything on [Reddit](https://www.reddit.com/r/sveltejs/) or [Discord](https://discord.gg/svelte). Until next month 👋