TypeScript.fm - The Friendly Show for TypeScript Developers

In this episode with Josh Goldberg, maintainer of TypeScript ESLint, we dive into his latest research project, Flint. The goal of Flint is to test different hypothesis on how to architect a modern, hybrid-native JavaScript and TypeScript linter. What happens when every rule can be type-aware? Can you write lint rules in TypeScript and run them with near-native performance? How can error messages be more helpful for humans and agents alike? How can the configuration and plugin system be re-designed so it's less magical and has more type safety? These are the kinds of questions the Flint team is exploring and we talk with Josh about how things are progressing and where Flint's future is headed.Josh's LinksFlint.fyiJoshuaKGoldberg.comFlint DiscordJosh on BlueSkyJosh on FosstodonJosh on GitHubChapters(00:00) - Introducing Josh Goldberg (01:43) - Introduction to Flint: A Modern, Hybrid Native Linter (03:44) - What Problems is Flint Trying to Solve? (05:26) - What's a Hybrid Linter? (07:55) - How Does Flint Handle Type-aware Rules? (10:45) - How Does Flint Improve Configuration DX? (17:13) - How Does Flint Handle Error Messages? (20:11) - What is Flint's Take on Errors vs. Warnings? (23:17) - How is Flint Approaching Documentation? (26:09) - Are There Differences in Dev Mode vs. CI Mode? (28:29) - Does Flint Do Anything Special with Formatting? (30:39) - Can Flint Fix Lint Issues? (32:21) - Are There Advantages to Being TypeScript-first? (33:55) - Separating Rules into Stylistic vs. Logical (36:36) - Organizing and Categorizing Lint Rules to Improve DX (38:17) - How to Get Involved with Flint (40:00) - Flint's Roadmap for 2026 and Beyond (43:28) - Where to Follow Josh's Work (44:20) - The Minnesota Long Goodbye??? Sponsored by Excalibur.jsExcalibur.js is the free and open source friendly TypeScript 2D game engine for the web. Learn to make web games with TypeScript or JavaScript! Excalibur comes out-of-the-box with everything you need, like physics, sprites, animations, sound effects, and first-party plugins for popular 2D gamedev tools.Homepage and Docs: https://excaliburjs.comMake Your First Game in 10 MinutesJoin the Discord: https://discord.gg/9UemP985UyMusicSeahorse Dreams by Kubbi (Spotify)

News for the week of March 30, 2026: fun with UUIDs, Cloudflare gunning for Wordpress, and how OSS maintainers can defend against spearphishing attacks. From the community: a very Solid 6 hours, compiling TS to native UI code, and a super fast VIN decoder.Sponsored by Excalibur.jsExcalibur.js is the free and open source friendly TypeScript 2D game engine for the web. Learn to make web games with TypeScript or JavaScript! Excalibur comes out-of-the-box with everything you need, like physics, sprites, animations, sound effects, and first-party plugins for popular 2D gamedev tools.Homepage and Docs: https://excaliburjs.comMake Your First Game in 10 MinutesJoin the Discord: https://discord.gg/9UemP985UyChapters(00:00) - Welcome to the Show (05:01) - News: ECMA Fools Day (07:22) - News: Cloudflare's EmDash Wants to Replace WordPress (11:56) - News: Attackers Are Spear-phishing High Profile OSS Maintainers (20:31) - News: BabylonJS v9, a 3D TypeScript Game Engine (21:38) - News: Claude Code CLI Source Code Leaked (24:00) - Library Watch: LayoutSans, Pure TypeScript 2D Layout Engine (25:29) - Library Watch: PerryTS Compiles TS to Native UI on Any Platform (28:55) - Library Watch: Gagen, Generating GitHub Actions with TypeScript (30:48) - Library Watch: finprim, Type-safe Financial Primitives (32:27) - Library Watch: GameDevLibrary, Excalibur.js Demos and Snippets (34:14) - Highlight: How Vercel Made Turborepo 96% Faster (37:16) - Highlight: oxlint and oxfmt Framework Compatibility Matrix (37:46) - Highlight: Jake Archibald Highlights Proposed HTML-in-Canvas Feature (38:49) - Highlight: Boston TS Club is Back (39:17) - Highlight: Solid 2.0 with Ryan Carniato (40:18) - Highlight: Cardog's Super Fast VIN Decoder in Corgi V3 (41:32) - Highlight: Fireship's Explainer on What Pretext Does (43:48) - Bleets of the Week (44:46) - Secret of the Handbook: Assertion Functions (46:50) - Cool Link: neovim 0.12 (48:07) - Cool Watch: Hands-on with Artemis II (49:14) - Cool Watch: Floating Point Math is Really Hard (50:27) - Cool Read: Project Hail Mary (52:39) - The Minnesota Long Goodbye NewsECMA Fools DayEvery UUID Dot Com Hot Guids in your area Cloudflare: Announcing EmDash, Wordpress in TypeScriptSocket: Attackers Are Hunting High-Impact Node.js Maintainers in a Coordinated Social Engineering CampaignBabylonJS v9 released Anthropic: Claude Code Source Code Leaked and Rewritten in PythonLibrary WatchLayoutSans: Pure TypeScript 2D layout engine powered by PretextPerryTS: Compile TypeScript to native UI on any platform (React Native, .NET MAUI alternative) Gagen: GH actions in TypeScriptFinPrim: Financial Primitives in TypeScriptGameDevLib: Excalibur.js demos and snippetsFrom the CommunityVercel: Making Turborepo 96% fasterVoidZero: Oxlint Oxfmt support compatibility matrixJake Archibald: HTML-in-Canvas demosBoston TS meetup is back! Ryan Carniato: 6 hours of Solid 2.0 talkCardog: Binary Indexes and What a Tiny LL M Learned About VINs Fireship: He just crawled through hell to fix the browser… Bleets of the week: Jokes on them and what types for plastic BBQ set? Secret of the Handbook: TypeScript assertion functionsCool LinksNeovim 0.12Floating point math is hard. Really, really hard. Hands On with the Artemis II Trajectory Project Hail Mary (audiobook)MusicSeahorse Dreams by Kubbi (Spotify)