• 57 minutes 9 seconds
    npmx shows what npmjs won't

    Jeppe hosts with Brittany. Guests: Patak (Matias Capeletto, Vite core team) and Zeu Capua (zeu.dev, software engineer, Svelte ambassador).


    What is npmx?

    A fast, open-source browser for the npm registry. It consumes the npmjs REST API and adds a better UI and more useful data on top. Started by Daniel Roe (Nuxt lead) ~40 days before recording. Patak joined as co-steward after seeing a two-day prototype.


    Features beyond npmjs.com

    • ESM vs CJS detection per package
    • Bundle size and install size
    • Color-coded dependency freshness (yellow = patch behind, red = major behind)
    • e18e module replacement warnings when a lighter modern alternative exists
    • Package claiming via UI (available locally if you fork the repo)
    • Planned: publishing and package management flows


    Svelte is #1

    Most liked package on npmx at time of recording: Svelte (173), Nuxt (101), Vite (96).


    Picks

    • Zeu: Hypermedia Systems by Carson Gross. Free online at hypermedia.systems.
    • Brittany: Starter Villain by John Scalzi. Comedy about inheriting a villain business.
    • Patak: The community blog posts from the npmx launch. Read them if you need a reminder that open source can still be fun.
    • Jeppe: Cordless hot glue guns. 10 seconds to heat up, fixes everything.


    Hot takes

    • Zeu: Stop putting "blue" or "sky" in AT Proto app names. The protocol needs to grow beyond Blue Sky.
    • Patak: He's stopped coding in open source. Focusing on people, calls, community. Open source needs more non-coders.


    Links


    6 March 2026, 7:14 pm
  • 53 minutes 14 seconds
    How did Svelte do in the State of JavaScript 2025?!

    Kev and Jeppe, discuss the cold weather in Denmark and Sweden compared to Hawaii. They highlight that "Svelte Radio" has ranked number 13 (effectively number 12) in the podcast section of the State of JS 2025 survey, placing them among the "mainstream" podcasts and slightly increasing the pressure to produce relevant content.

    State of JS: Frameworks
    The hosts analyze the survey results for JavaScript frameworks:

    • Svelte: Usage increased slightly to 27% (up from 26%). It maintains the highest interest rating for the sixth consecutive year, though interest is slightly declining—a trend seen across most frameworks. Satisfaction remains high at number two (86%), just behind Solid.
    • React: Continues to dominate with 70 million weekly downloads, but interest and satisfaction are declining. The hosts discuss the complexity of React Server Components (RSC) and the risks of framework developers losing touch with practical usage ("dogfooding").
    • Solid: Rising in interest and taking the number one spot for satisfaction.
    • HTMX: Saw a significant drop in interest, described as a "meme" that has cooled down.
    • Web Components: Chatter is growing (e.g., Lit), but usage remains relatively low compared to the push from DevRel teams.


    State of JS: Meta-Frameworks

    • Next.js: Leads usage significantly at 59% but has low satisfaction, barely beating out Gatsby.
    • Astro: Growing rapidly (27% usage) and ranked number one in satisfaction. Its strength lies in supporting multiple frameworks (React, Vue, Svelte).
    • SvelteKit: Ranked number two in satisfaction. Interest is declining, likely due to the framework maturing.
    • TanStack Start: Noted as a popular write-in option and a strong new alternative to Next.js.
    • Analog: Mentioned as an Angular meta-framework powered by Vite.


    Libraries & Developer Tools

    • The hosts discuss various libraries and tools featured in the survey:
    • Validation: Zod is the most used, but Valibot is recommended as a smaller, tree-shakable alternative. Both libraries support the new "Standard Schema" initiative.
    • Linting: Oxlint is highlighted as a much faster, Rust-based alternative to ESLint.
    • Package Management: The tool ni is recommended for running package manager commands (install, run scripts) agnostically without needing to remember if a project uses npm, yarn, or pnpm.
    • Date Libraries: Day.js, date-fns, and Luxon remain popular. The hosts anticipate the upcoming JavaScript Temporal API may eventually replace these.
    • jQuery: A new version was released that drops Internet Explorer 11 support and migrates to ES modules.


    Picks & Actionable Items
    The hosts conclude with their picks for the week:

    • Kev's Pick: The TV show "A Knight of the Seven Kingdoms" (Game of Thrones universe).
    • Jeppes's Pick: npmx.dev, a modern, interactive interface for the NPM registry that includes vulnerability alerts and dependency graphs.


    Actionable Items:

    • Try ni: Use the ni CLI tool to handle package manager commands automatically across different projects.
    • Contribute to npmx.dev: The project is looking for contributors. It is described as a friendly community for those wanting to get into open source.
    • Avoid AI Spam PRs: If contributing to npmx.dev or other projects, ensure contributions are genuine and not low-effort, AI-generated pull requests.
    10 February 2026, 2:10 pm
  • 41 minutes 13 seconds
    The LLM Doomer Episode

    Sorry about Jeppe's audio in this one, he accidentally picked the wrong microphone during recording and there's not much we can do about it :(

    The gang kicks back for their first episode of the new year, catching up on holidays before diving into AI and vibe coding. Kevin talks bout a gym tracking app he built almost entirely with LLMs. 

    They cover updates to the Svelte Society website (job board, sponsorships, newsletter), debate whether Mozilla/Firefox can survive by pivoting to AI, and wrap with hot takes: Kevin warns devs to learn AI tools or risk obsolescence, Brittney shares Claude's take that TypeScript's type system has become its own technical debt, and Jeppe champions the glory of two ultra-wide curved monitors.

    4 February 2026, 2:00 pm
  • 1 hour 59 seconds
    Custom Renderers for Svelte with Paolo Ricciuti

    In this episode of Svelte Radio, we welcome Jeppe as a new permanent host and sit down with Paolo Ricciuti, Svelte maintainer and Senior Software Developer at Mainmatter, to dive deep into Svelte custom renderers. Paolo walks us through how custom renderers work (using React's approach with React DOM, Ink, and React Native as context), explains the technical challenges of bringing this capability to Svelte 5—including the template element trick, CSP issues, and runtime modifications—and shares his proof-of-concept work enabling Svelte to render to non-DOM targets like terminals and native mobile apps via Lynx.js. The discussion touches on potential use cases like Threlte for 3D graphics, the importance of this feature for Svelte adoption, and wraps up with picks including Screen Studio, TMCP, and Advent of Svelte.


    Guest

    • Paolo Ricciuti — Svelte maintainer and ambassador, Senior Software Developer at Mainmatter


    New Host

    • Jeppe joins as a permanent co-host!


    Topics Discussed


    Custom Renderers Overview

    • Svelte Custom Renderers website
    • What custom renderers are and why they matter
    • How React separates React (the diffing library) from React DOM (the renderer)
    • Examples of React custom renderers: 
      • Ink — React for terminal/CLI applications
      • React Native — React for iOS/Android native apps
      • Remotion — React for programmatic video creation
      • React PDF renderer for generating documents


    Svelte's Technical Approach

    • How Svelte 5 uses the <template> element and innerHTML for fast rendering
    • The CSP (Content Security Policy) challenges with innerHTML
    • Paolo's compiler option contribution to enable programmatic element creation
    • The custom renderer API: defining operations like createElement, setText, setAttribute, appendChild, etc.
    • Separating the Svelte runtime from DOM-specific code


    Lynx.js Integration

    • Lynx.js — ByteDance's cross-platform framework (powers parts of TikTok)
    • Why Lynx was the catalyst for custom renderer work
    • CSS support in Lynx including Flexbox, Grid, and even Tailwind
    • The difference between Lynx's element approach vs React Native's component imports


    Related Projects & Discussions

    • Threlte — Three.js for Svelte (created by Grisha)
    • React Three Fiber — Three.js React renderer
    • Svelte Native — Existing (but limited) Svelte native solution
    • LiveView Native (Elixir/Phoenix) as a comparison for multi-target templating
    • Discussion with Grisha about mixing renderers in the same component


    Funding & Open Source

    • Mainmatter's sponsorship of Paolo's custom renderer work
    • First external sponsor for this initiative
    • Discussion about using Svelte Open Collective funds for this feature
    • Why custom renderers matter for Svelte adoption in enterprise


    Paolo's Recent Contributions to Svelte

    • onChange callback for $state (PR in progress)
    • from action utility
    • CSP-friendly compiler option (foundational for custom renderers)


    Picks

    • Screen Studio — screen.studio — Mac screen recording app with automatic zoom animations (Kevin's pick, used for Advent of Svelte recordings)
    • TMCP — github.com/paoloricciuti/tmcp — Paolo's TypeScript MCP (Model Context Protocol) framework, praised for being much better than the official SDK (Jeppe's pick)
    • Advent of Svelte — svelte.dev/blog/advent-of-svelte — 24 days of Svelte features and improvements (Brittany's pick)


    Links


    Follow

    11 December 2025, 4:00 pm
  • 1 hour 13 minutes
    One Man Svelte for NGOs with Ilja

    Guest
    Ilja - Berlin-based developer specializing in building websites and data visualizations for NGOs. Svelte Ambassador.


    Topics Discussed

    • Working with NGOs vs. traditional businesses
    • Budget constraints and project-based funding
    • The AfroZensus project
    • Svelte 5 migration
    • Berlin Svelte Meetup announcement


    Berlin Svelte Meetup

    • Date: December 9th (Tuesday)
    • Venue: Datawrapper's office in Berlin
    • Talks: Peter from XYFlow presenting SvelteFlow, plus more
    • Registration: https://svelte-berlin.de/


    Links Mentioned


    Tools & Libraries


    Companies & Organizations


    Projects


    Courses


    Unpopular Opinions

    • Kevin: More people should self-host
    • Brittney: Lost free Copilot access
    • Antony: Store states, not effects
    • Ilya: JSDoc is superior to TypeScript


    Picks

    • Kevin: SparklePost, "You can just do things", The Hierarchy book series by James Islington
    • Brittney: @component documentation
    • Antony: Friendly Captcha
    • Ilya: svelte-render-scan, svelte-inspect-value, Practical Accessibility course
    6 December 2025, 10:34 pm
  • 1 hour 13 minutes
    Benchmarking AI with Stanislav Khromov

    In this episode, Stanislav Khromov joins the Svelte Radio team to discuss his work on Svelte Bench, a

    benchmarking tool that scientifically measures how well different LLMs understand and write Svelte 5 code.

    The conversation explores the challenges of AI-assisted coding with Svelte 5, the development of the official

    Svelte MCP (Model Context Protocol) that provides LLMs with documentation and auto-fixing capabilities, and

    the surprising performance differences between major AI providers. Stanislav also shares insights on working

    with AI tools, the future of local models, and the economics of AI coding assistants.

    Notes

    Unpopular Opinions

    Picks

    30 October 2025, 4:00 pm
  • 1 hour 4 minutes
    Macrodata Refinement with Ken Kunz

    In this episode of Svelte Radio, Ken Kunz joins the hosts to discuss his journey with Svelte, from discovering it

    through Rich Harris's "Rethinking Reactivity" talk to building complex financial applications. Ken shares his

    experience working on Trading Strategy, a decentralized finance platform, and the challenges of implementing

    sophisticated charting solutions.

    The conversation also covers Ken's memorable Svelte Summit talk where he

    recreated the Macrodata Refinement interface from the TV show Severance, complete with props and staying in

    character throughout. The episode touches on testing philosophies, state management with his library Svelte-

    FSM, and the newly launched Svelte Society Chicago chapter.

    Notes

    Picks

    23 October 2025, 1:15 pm
  • 42 minutes 15 seconds
    Storybook is actually good now, with Jeppe Reinhold

    Summary

    In this episode of Svelt Radio, the hosts welcome Jeppe Reinhold from Chromatic to discuss the dramatic

    improvements in Storybook's Svelte integration. Jeppe shares how a critical video by Brittany struggling with

    Storybook setup sparked a complete overhaul of the Svelte experience, leading to better collaboration with the

    Svelte core team and significant enhancements in functionality. 

    The conversation covers new features like Svelte

    CSF for writing stories in native Svelte syntax, improved testing capabilities, support for async components, and

    upcoming features in Storybook 10. The team also discusses the philosophy behind component-driven

    development, the challenges of integrating with remote functions, and Storybook's future direction including AI

    support and better theming capabilities.


    Links

    Unpopular Opinions

    • Antony: Svelte is an independent project! Don’t throw it in the bin
    • Jeppe: I like GANTT charts


    Picks

    • Antony: Castles!
    • Brittney: Spain!
    • Jeppe: Tuple
    16 October 2025, 9:00 am
  • 1 hour 1 minute
    Remote Functions with Simon Holthausen

    Summary

    In this episode, Simon Holthausen from the Svelte team joins to discuss remote functions and async Svelte, two

    experimental features that are changing how developers interact with data in SvelteKit applications. Remote

    functions offer a new RPC-like approach that provides better type safety, more granular data loading, and

    improved developer experience compared to traditional load functions and form actions. The conversation

    covers the technical implementation, design decisions, and future possibilities including caching, streaming, and

    integration with Svelte's upcoming resource API. Simon also explains how async Svelte enables top-level await

    in components with coordinated loading boundaries, making asynchronous work much easier to manage in both

    SSR and SPA contexts.


    Links


    Picks

    9 October 2025, 8:19 am
  • 39 minutes 32 seconds
    We're putting the band back together.

    Summary
    We're putting the band back together. Svelte Radio is officially back. This first episode is a bit of catch-up. Not a ton of Svelte chatter. Look forward to many fun and interesting episodes.

    Next week we talk with Simon about Remote Functions. Don't miss it!

    Show Notes

    Hot takes

    • Kevin: AI generates a lot of Workslop if you're not careful.
    • Antony: Find something common and differentiate
    • Brittney: Cats are better than dogs.

    Picks

    26 September 2025, 7:01 pm
  • 55 minutes 31 seconds
    Timothy Cohen Talks SampleKit

    Summary
    In this episode we sit down with Timothy Cohen and talk about his project SampleKit and Svelte 5.

    Sponsored by Svelte Summit
    Svelte Summit is an event dedicated to Svelte and everything that is happening in the community. Don't miss it! It's going to be an absolute blast. It's happening on May 8 and 9, 2025 in Barcelona Spain.

    20 January 2025, 11:59 am
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