---
title: "What's new in Svelte: August 2022"
description: "Changes to SvelteKit's `load` before 1.0 plus support for Vite 3 and `vite.config.js`!"
author: Daniel Sandoval
authorURL: https://desandoval.net
---

There's a lot to cover this month... big changes are coming to SvelteKit's design before 1.0 can be completed. If you haven't already, check out Rich's Discussion, [Fixing `load`, and tightening up SvelteKit's design before 1.0 #5748](https://github.com/sveltejs/kit/discussions/5748).

Also, [@dummdidumm](https://github.com/dummdidumm) (Simon H) [has joined Vercel to work on Svelte full-time](https://twitter.com/dummdidumm_/status/1549041206348222464) and [@tcc-sejohnson](https://github.com/tcc-sejohnson) has joined the group of SvelteKit maintainers! We're super excited to have additional maintainers now dedicated to working on Svelte and SvelteKit and have already been noticing their impact. July was the third largest month for SvelteKit changes since its inception!

Now onto the rest of the updates...

## What's new in SvelteKit
- Dynamically imported styles are now included during SSR ([#5138](https://github.com/sveltejs/kit/pull/5138))
- Improvements to routes and prop updates to prevent unnecessary rerendering ([#5654](https://github.com/sveltejs/kit/pull/5654), [#5671](https://github.com/sveltejs/kit/pull/5671))
- Lots of improvements to error handling ([#4665](https://github.com/sveltejs/kit/pull/4665), [#5622](https://github.com/sveltejs/kit/pull/5622), [#5619](https://github.com/sveltejs/kit/pull/5619), [#5616](https://github.com/sveltejs/kit/pull/5616))
- Custom Vite modes are now respected in SSR builds ([#5602](https://github.com/sveltejs/kit/pull/5602))
- Custom Vite config locations are now supported ([#5705](https://github.com/sveltejs/kit/pull/5705))
- Private environment variables (aka "secrets") are now much more secure. Now if you accidentally import them to client-side code, you'll see an error ([#5663](https://github.com/sveltejs/kit/pull/5663), [Docs](https://kit.svelte.dev/docs/configuration#env))
- Vercel's v3 build output API is now being used in `adapter-vercel` ([#5514](https://github.com/sveltejs/kit/pull/5514))
- `vite-plugin-svelte` has reached 1.0 and now supports Vite 3. You'll notice new default ports for `dev` (port 5173) and `preview` (port 4173) ([#5005](https://github.com/sveltejs/kit/pull/5005), [vite-plugin-svelte CHANGELOG](https://github.com/sveltejs/vite-plugin-svelte/blob/main/packages/vite-plugin-svelte/CHANGELOG.md))

**Breaking changes:**
- `mode`, `prod` and `server` are no longer available in `$app/env` ([#5602](https://github.com/sveltejs/kit/pull/5602))
- `svelte-kit` CLI commands are now run using the `vite` command and `vite.config.js` is required. This will allow first-class support with other projects in the Vite ecosystem like Vitest and Storybook ([#5332](https://github.com/sveltejs/kit/pull/5332), [Docs](https://kit.svelte.dev/docs/project-structure#project-files-vite-config-js))
- `endpointExtensions` is now `moduleExtensions` and can be used to filter param matchers ([#5085](https://github.com/sveltejs/kit/pull/5085), [Docs](https://kit.svelte.dev/docs/configuration#moduleextensions))
- Node 16.9 is now the minimum version for SvelteKit ([#5395](https://github.com/sveltejs/kit/pull/5395))
- %-encoded filenames are now allowed. If you had a `%` in your route, you must now encode it with `%25` ([#5056](https://github.com/sveltejs/kit/pull/5056))
- Endpoint method names are now uppercased to match HTTP specifications ([#5513](https://github.com/sveltejs/kit/pull/5513), [Docs](https://kit.svelte.dev/docs/routing#endpoints))
- `writeStatic` has been removed to align with Vite's config ([#5618](https://github.com/sveltejs/kit/pull/5618))
- `transformPage` is now `transformPageChunk` ([#5657](https://github.com/sveltejs/kit/pull/5657), [Docs](https://kit.svelte.dev/docs/hooks#handle))
- The `prepare` script is no longer needed in `package.json` ([#5760](https://github.com/sveltejs/kit/pull/5760))
- `adapter-node` no longer does any compression while we wait for a [bug fix in the `compression` library](https://github.com/expressjs/compression/pull/183) ([#5560](https://github.com/sveltejs/kit/pull/5506))

For a full list of changes, check out kit's [CHANGELOG](https://github.com/sveltejs/kit/blob/master/packages/kit/CHANGELOG.md).


## What's new in Svelte & Language Tools
- The `@layer` [CSS at-rule](https://developer.mozilla.org/en-US/docs/Web/CSS/@layer) is now supported in Svelte components (**3.49.0**, [PR](https://github.com/sveltejs/svelte/issues/7504))
- The `inert` [HTML attribute](https://html.spec.whatwg.org/multipage/interaction.html#the-inert-attribute) is now supported in Svelte's language tools and plugins (**105.20.0**, [PR](https://github.com/sveltejs/language-tools/pull/1565))
- The Svelte plugin will now use `SvelteComponentTyped` typings, if available (**105.19.0**, [PR](https://github.com/sveltejs/language-tools/pull/1548))


---

## Community Showcase

**Apps & Sites built with Svelte**
- [PocketBase](https://github.com/pocketbase/pocketbase) is an open source Go backend with a single file and an admin dashboard built with Svelte
- [Hondo](https://www.playhondo.com/how-to-play) is a word guessing game with multiple rounds
- [Hexapipes](https://github.com/gereleth/hexapipes) is a site for playing hexagonal pipes puzzle
- [Mail Must Move](https://www.mordon.app/) is an email made for those who want to get more done
- [Jot Down](https://github.com/brysonbw/vscode-jot-down) is a Visual Studio Code extension for quick and simple note taking
- [Kadium](https://kadium.kasper.space/) is an app for staying on top of YouTube channels' uploads
- [Samen zjin we #1metS10](https://1mets10.avrotros.nl/) is a campaign website to support S10, the dutch Eurovision finalist, by sending a drawing or a wish
- [On Writing Code](https://onwritingcode.com/) is an interactive website to learn programming design patterns
- [Svelte-In-Motion](https://github.com/novacbn/svelte-in-motion) lets you create Svelte-animated videos in your browser
- [Svelte Terminal](https://github.com/Nico-Mayer/svelte-terminal) is a terminal-like website
- [Bulletlist](https://bulletlist.com/) is a simple tool with a single purpose: making lists
- [Remind Me Again](https://github.com/probablykasper/remind-me-again) is an app for toggleable reminders on Mac, Linux and Windows
- [Heyweek](https://heyweek.com/) is a timetracking app built for freelancers craving that extra pizzazz

**Learning Resources**

_Starring the Svelte team_
- [The Svelte Documentary is out!](https://www.svelteradio.com/episodes/the-svelte-documentary-is-out) on Svelte Radio
- [Beginner SvelteKit](https://vercel.com/docs/beginner-sveltekit) by Vercel
- [Challenge: Explore Svelte by Building a Bubble Popping Game](https://prismic.io/blog/try-svelte-build-game) by Brittney Postma
- [Let's write a Client-side Routing Library with Svelte](https://www.youtube.com/watch?v=3foVDSknGEY) by lihautan
- [Svelte Sirens July Talk - Testing in Svelte with Jess Sachs](https://sveltesirens.dev/event/testing-in-svelte)

_To Watch_
- [10 Awesome Svelte UI Component Libraries](https://www.youtube.com/watch?v=RkD88ARvucM) by LevelUpTuts
- [Learn How SvelteKit Works](https://www.youtube.com/watch?v=VizuTy3uSNE) and [SvelteKit Endpoints](https://www.youtube.com/watch?v=XnVxDLTgCgo) by Joy of Code
- [SvelteKit using TS, and Storybook setup](https://www.youtube.com/watch?v=L4F5dSu0FcQ) by Jarrod Kane
- [Building Apps with Svelte!](https://www.youtube.com/watch?v=prsXVk1fdW4) by Simon Grimm
- [SvelteKit authentication, the better way - Tutorial](https://www.youtube.com/watch?v=Y98KipzwVdM) by Pilcrow

_To Read_
- [Some assorted Svelte demos](https://geoffrich.net/posts/assorted-svelte-demos/) by Geoff Rich
- [Three ways to bootstrap a Svelte project](https://maier.tech/posts/three-ways-to-bootstrap-a-svelte-project) by Thilo Maier
- [Design & build an app with Svelte](https://bootcamp.uxdesign.cc/design-build-an-app-with-svelte-ecd7ed0729da) by Hugo
- [Define routes via JS in SvelteKit](https://dev.to/maxcore/define-routes-via-js-in-sveltekit-27e9) by Max Core
- [Integrating Telegram api with SvelteKit](https://dev.to/theether0/integrating-telegram-api-with-sveltekit-5gb) by Shivam Meena
- [SvelteKit SSG: how to Prerender your SvelteKit Site](https://rodneylab.com/sveltekit-ssg/) by Rodney Lab
- [ADEO Design System: Building a Web Component library with Svelte and Rollup](https://medium.com/adeo-tech/adeo-design-system-building-a-web-component-library-with-svelte-and-rollup-72d65de50163) by Mohamed Mokhtari
- [The Svelte Handbook](https://thevalleyofcode.com/svelte/) by The Valley of Code
- [Test Svelte Component Using Vitest & Playwright](https://davipon.hashnode.dev/test-svelte-component-using-vitest-playwright) by David Peng
- [Transitional Apps with Phoenix and Svelte](https://nathancahill.com/phoenix-svelte) by Nathan Cahill

_Tech Demos_
- [Bringing the best GraphQL experience to Svelte](https://www.the-guild.dev/blog/houdini-and-kitql) by The Guild
- [Style your Svelte website faster with Stylify CSS](https://stylifycss.com/blog/style-your-svelte-website-faster-with-stylify-css/) by Stylify
- [Revamped Auth Helpers for Supabase (with SvelteKit support)](https://supabase.com/blog/2022/07/13/supabase-auth-helpers-with-sveltekit-support) by Supabase


**Libraries, Tools & Components**
- [Lucia](https://github.com/pilcrowOnPaper/lucia-sveltekit) is a simple, JWT based authentication library for SvelteKit that connects your SvelteKit app with your database
- [Skeleton](https://github.com/Brain-Bones/skeleton) is a UI component library for use with Svelte + Tailwind
- [pass-composer](https://pass-composer.vercel.app/) helps you compose your postprocessing passes for threlte scenes
- [@crikey/stores-*](https://whenderson.github.io/stores-mono/) is a collection of libraries to extend Svelte stores for common use-cases
- [Svelte Chrome Storage](https://github.com/shaun-wild/svelte-chrome-storage) is a lightweight abstraction between Svelte stores and Chrome extension storage
- [Svelte Schema Form](https://github.com/restspace/svelte-schema-form) is a form generator for JSON schema
- [svelte-gesture](https://github.com/wobsoriano/svelte-gesture) is a library that lets you bind richer mouse and touch events to any component or view
- [Snap Layout](https://github.com/ThaUnknown/snap-layout) and [universal-title-bar](https://github.com/ThaUnknown/universal-title-bar) bring Windows 11 snap layout and title features to webapps and PWAs. Both can be imported as a `.svelte` module or as a web component
- [svelte-adapter-bun](https://github.com/gornostay25/svelte-adapter-bun) is an adapter for SvelteKit apps that generates a standalone Bun server
- [json2dir](https://www.npmjs.com/package/json2dir) converts JSON objects into directory trees
- [Svelte Command Palette](https://github.com/rohitpotato/svelte-command-palette) is a drop-in command palette component
- [svelte-use-drop-outside](https://github.com/untemps/svelte-use-drop-outside) is a Svelte action to drop an element outside an area
- [PowerTable](https://github.com/muonw/powertable) is a JavaScript component that turns JSON data into an interactive HTML table
- [svelte-slides](https://github.com/rajasegar/svelte-slides) is a slide show template for Svelte using Reveal.js
- [Svelte Theme Light](https://marketplace.visualstudio.com/items?itemName=webmaek.svelte-theme-light) is a Visual Studio Code theme based on the Svelte REPL

Did we miss anything? Let us know on [Reddit](https://www.reddit.com/r/sveltejs/) or [Discord](https://discord.com/invite/yy75DKs)!

Still looking for something to do in September? Come join us at the Svelte Summit in Stockholm! [Get your tickets now](https://www.sveltesummit.com/).

See ya next month!