docs: "What's new in Svelte" September newsletter (#9158)

* first draft. sept

* address pr feedback

* forgot a Joy of Code video!

documentation/blog/2023-09-01-whats-new-in-svelte-september-2023.md

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+---
+title: "What's new in Svelte: September 2023"
+description: "New parameters in SvelteKit's redirect and an onNavigate lifecycle function come to life"
+author: Dani Sandoval
+authorURL: https://dreamindani.com
+---
+
+Happy September y'all! With all the [sneak peeks at what's coming soon in Svelte 5](https://twitter.com/Rich_Harris/status/1688581184018583558), we thought it'd be best to look back at the last month to see what's shipped and what the community is building with Svelte.
+
+Before we jump in, a warm welcome to the new Svelte Ambassadors: [@cainux](https://github.com/cainux) and [@grischaerbe](https://github.com/grischaerbe)! Welcome to the crew ⛴️
+
+## What's new in Svelte & Language Tools
+- `svelteHTML` has moved from language-tools into Svelte core so that `svelte/element` types will now load correctly (**4.2.0** in Svelte, **107.10.0** in Language Tools)
+
+## What's new in SvelteKit
+- `URL` is now accepted in the `redirect` function (**1.23.0**, [Docs](https://kit.svelte.dev/docs/modules#sveltejs-kit-redirect), [#10570](https://github.com/sveltejs/kit/pull/10570))
+- Mistyped route filenames will now throw a warning (**1.23.0**, [#10558](https://github.com/sveltejs/kit/pull/10558))
+- The new `onNavigate` lifecycle function enables view transitions - Check out the [blog post](https://svelte.dev/blog/view-transitions) for more info (**1.24.0**, [Docs](https://kit.svelte.dev/docs/modules#app-navigation-onnavigate), [#9605](https://github.com/sveltejs/kit/pull/9605))
+
+But that's just the new features! For all the patches and performance updates from this month, check out the [SvelteKit CHANGELOG](https://github.com/sveltejs/kit/blob/master/packages/kit/CHANGELOG.md). You can also find adapter-specific CHANGELOGs in each of [the `adapter` directories](https://github.com/sveltejs/kit/tree/master/packages).
+
+---
+
+## Community Showcase
+
+**Apps & Sites built with Svelte**
+- [Planet Of The Bugs](https://planetofthebugs.xyz/) allows developers to practice and hone their skill-sets by exposing them to an endless supply of unique, curated issues and bugs from popular open-source projects on Github
+- [Minesweeper](https://github.com/ProductionPanic/minesweeper/tree/main) is an Android game built with SvelteKit, Capacitor, TailwindCSS and DaisyUI (check it out on the [Google Play Store](https://play.google.com/store/apps/details?id=com.production.panic.minesweeper&pli=1))
+- [Pendor](https://www.pendor.ai/) is an AI component generator for Svelte
+- [Avatars Pro](https://senja.io/testimonial-widgets/avatars-pro) is a social proof widget made for the web
+- [Pomodoro Focus](https://github.com/con-dog/pomodoro-focus) is a pomodoro timer browser extension
+- [memegen](https://github.com/bhupeshpr25/memegen) is a Firefox web extension that allows users to generate memes using various templates
+- [Resgen](https://resgen.app/) is a Chrome extension that tailors resumes based on job descriptions and your experiences
+- [Icono Search](https://www.icono-search.com) is an AI-powered video search engine
+- [digital-paper](https://github.com/danferns/digital-paper) is a writing app with no backspace or undo
+- [Ubuntu 22.04 in Svelte](https://github.com/manhhungpc/ubuntu2204-svelte) aims to replicate the Ubuntu 22.04 desktop experience on the web
+- [My Queue](https://www.myqueue.so/) creates a playlist of written articles by turning them into audio stories
+
+
+
+**Learning Resources**
+_Featuring Svelte Contributors and Ambassadors_
+- [Svelte Society - London August 2023](https://www.youtube.com/watch?v=90Psdk5rAnU)
+- [Building a Blog using SvelteKit and Nostr as a CMS (Part 1](https://kevinak.se/blog/building-a-blog-using-sveltekit-and-nostr-as-a-cms-part-1-1690807337563)) by Kev
+- [Mastering SvelteKit with Geoff Rich | JS Drops](https://www.youtube.com/watch?v=MaF8kRbHbi0) by This Dot Media
+- [Using GitHub Contributions To Flex On The Normies](https://youtu.be/f9fd1L1FEts?si=3hbihW-X5-GKSJxN), [Learn Svelte By Making A Matching Game](https://www.youtube.com/watch?v=w2q9caYXgkg) and [Who Needs API Permission When You Can Use Web Scraping](https://www.youtube.com/watch?v=T-lBPpeokfY) by Joy of Code
+- [The missing guide to understanding adapter-static in SvelteKit](https://khromov.se/the-missing-guide-to-understanding-adapter-static-in-sveltekit/) by Stanislav Khromov
+- This Week in Svelte:
+  - [2023 July 28](https://www.youtube.com/watch?v=mvTEQ_C0qRQ) - Screen reader market share, Svelte to plain JS, Web Components
+  - [2023 Aug 4](https://www.youtube.com/watch?v=Ye8cCJyPZjg) - Svelte 4.1.2, SvelteKit 1.22.4, ES Modules, Types in markup
+  - [2023 August 11](https://www.youtube.com/watch?v=A8XUaiCVkCI) - Svelte 4.2.0, SvelteKit 1.22.5, How to create Toggle Switches
+  - [2023 August 18](https://www.youtube.com/watch?v=nJ5Wf3uL7dM) - SvelteKit 1.22.6, accessible form error summaries
+  - [2023 August 25](https://www.youtube.com/watch?v=JoPzvlBKXXE) - SvelteKit 1.23.0, Bun and SvelteKit, Enhanced search
+- Svienna (Svelte Society Vienna) Sessions
+  - [Ermin Celikovic - You might not need a slider library](https://www.youtube.com/watch?v=dSUmtijkFOc)
+  - [Lukas Stracke - How to use sentry.io in your SvelteKit App](https://www.youtube.com/watch?v=u41-MtPGH04)
+  - [Jean-Yves Couet - SvelteKit & Remult... fullstack apps in minutes!](https://www.youtube.com/watch?v=N8d290fTzq8)
+- Sirens Sessions
+  - [Prismic Slice Machines & SvelteKit](https://www.youtube.com/watch?v=19Meb-yMsAg) with Sam Littlefair
+  - [Medusa and SvelteKit E-Commerce Stack](https://www.youtube.com/watch?v=rVVHxows9dY) with Lacey Pevey
+  - [Design Systems: Lessons Learned](https://www.youtube.com/watch?v=YHZaiIGSqsE) with Eric Liu
+
+
+_To Watch_
+- [Image optimization in SvelteKit with vite-imagetools](https://www.youtube.com/watch?v=285vSLe9LQ8) by hartenfellerdev
+-  [Building a Todo App with Rust and SvelteKit: Complete Tutorial](https://www.youtube.com/watch?v=w7is2bCTUg0) and [Stripe Payment In SvelteKit With Dynamic Pricing](https://www.youtube.com/watch?v=o8gvCLgz1vs) by SvelteRust
+- [Leaflet maps in SvelteKit like it's 2023 (HowTo)](https://www.youtube.com/watch?v=JFctWXEzFZw)
+ShipBit
+
+
+_To Read_
+- [Internationalization in SvelteKit (Series)](https://blog.aakashgoplani.in/series/i18n-in-sveltekit) by Aakash Goplani
+- [The easiest Chatbot you will ever build](https://simon-prammer.vercel.app/blog/post/sveltekit-langchain) and [Intro to LangSmith🦜️🛠️](https://simon-prammer.vercel.app/blog/post/langsmith) by Simon Prammer
+- [SvelteKit: How to make code-based router, instead of file-based router [August 2023]](https://dev.to/maxcore/sveltekit-how-to-make-code-based-router-instead-of-file-based-router-august-2023-5f9) by Max Core
+- [SvelteKit Hydration Gotcha](https://www.captaincodeman.com/sveltekit-hydration-gotcha) by Captain Codeman
+- [Automatically generate sitemap.xml in SvelteKit](https://alex-schnabl.medium.com/automatically-generate-sitemap-xml-in-sveltekit-910bd09d17e7) by Alex Schnabl
+- [Discovering Svelte: Things I Learned While Using Svelte](https://www.tronic247.com/discovering-svelte-things-i-learned-while-using-svelte/) by Posandu Mapa
+- [Typed fetch with Sveltekit and Hono using RPC](https://dev.to/subhendupsingh/typed-fetch-with-sveltekit-and-hono-using-rpc-2clf) by Subhendu Pratap Singh
+- [Svelte Context Module Scripts Explained](https://raqueebuddinaziz.com/blog/svelte-context-module-scripts-explained) by raqueebuddin aziz
+- [Building with GPT4 and Svelte](https://kvak.io/meoweler) by levmiseri
+- [Type-safe User Authentication in SvelteKit with Lucia, Planetscale, and Upstash Redis](https://upstash.com/blog/lucia-sveltekit) by Chris Jayden
+- [Document Svelte Projects with HTML and JSDoc Comments](https://blog.robino.dev/posts/doc-comments-svelte) by Ross Robino
+
+
+
+**Libraries, Tools & Components**
+- [Carta](https://github.com/BearToCode/carta-md) is a lightweight, fast and extensible Svelte Markdown editor and viewer, based on Marked
+- [Threlte](https://threlte.xyz/), the 3D framework built from Svelte and Three.js has released version 6
+- [vite-plugin-web-extension](https://vite-plugin-web-extension.aklinker1.io/guide/frontend-frameworks.html#svelte-integration) works great with Svelte to make building browser extensions easier
+- [Salvia-kit Svelte Dashboards](https://github.com/salvia-kit/svelte-dashboards) contains 10 free dashboard templates for SvelteKit
+- [drab](https://github.com/rossrobino/drab) is an Unstyled Svelte component library
+- [svelte-img-previewer](https://www.npmjs.com/package/svelte-img-previewer?activeTab=readme) is a tool for displaying images from input file types in Svelte
+- [sveltekit-search-params](https://github.com/paoloricciuti/sveltekit-search-params) describes itself as the fastest way to read AND write from query search params in SvelteKit
+
+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 time 👋