TypeScript.fm - The Friendly Show for TypeScript Developers

Kamran Ayub and Erik Onarheim
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The two TypeScript Fools, Kamran Ayub and Erik Onarheim, get together weekly to bring you news, community highlights, and deep dives into the TypeScript ecosystem. Stay up-to-date on what's happening and learn new things to make you a better TypeScript developer along the way!

  1. -4 DIAS

    Rolldown 1.0 RC, a Fully Featured PDF Library, and Lodash Updates | News | Ep 53

    News for the week of January 19, 2025: Rolldown reaches 1.0 release candidate, and a PDF library we all deserve. From the community: a better npm admin experience, supertype safety, and modern package.json targets. Stand With MinnesotaWe are native Minnesotans. The ICE occupation is affecting our community in so many ways and has disrupted daily life for thousands of us. Families are sheltering in place, fearing to go to work, let their kids walk to school, take the bus, or even attend school at all. Adults and children are being abducted from their workplaces, schools, cars, and homes with aggressive tactics and without due process. There have been dozens of well-documented violations of our civil liberties and rights as US citizens, including the illegal detainment of peaceful protestors, constitutional observers, and people of color. ICE has shot and killed two US citizens already in the span of 3 weeks: Renee Good, a mother of three, and Alex Pretti, a VA nurse. They are out of control, they are causing irreparable harm, and we want them out of our cities. Go to StandWithMinnesota.com to learn how you can help. Chapters (00:00) - Welcome to the Show (06:36) - News: TypeScript PR to Support Import Attributes in d.ts Files (09:00) - News: Deno 2.6.6 Brings Some QOL Improvements (10:15) - News: Rolldown 1.0 RC is Here (14:13) - News: TC39 ECMAScript Proposal Updates (19:04) - News: Firefox 147 Adds WebGPU on Apple Sillicon and Brotli Compression (21:04) - News: Nuxt 4.3 Supports Inlining Critical CSS for Webpack and Rspack (22:33) - PSA: Svelte Ecosystem Vulnerabilities (24:26) - Library Watch: LibPDF, the PDF Library TypeScript Developers Deserve (26:17) - Library Watch: ts2rs, Transforms TS Types to Rust Types (27:38) - Library Watch: Mastra, TS Agent Toolkit, Reaches 1.0 (28:23) - PSA: Lodash Gets a Security Update and Governance from OpenJSF (29:20) - Community Highlight: Daniel Roe Wants to Hear Your npm Frustrations (29:57) - Community Highlight: Don't Assign a Map to WeakMap (30:59) - Community Highlight: Super Monkey Ball on the Web (31:38) - Community Highlight: Package.json for Modern Targets (33:18) - Community Highlight: How Next.js Built Turbopack (33:39) - Bleet of the Week (34:21) - Cool Link: Crudy, a Postman Alternative (35:05) - Cool Video: SystemOfLevers on How to Make a Gameboy Game (35:24) - Cool Video: How to Make a Homebrew GPU (35:57) - Cool Video: Transforms 101 by Scott (36:17) - Cool Link: StandWithMinnesota.com (37:29) - The Minnesota Long Goodbye News TypeScript PR to add support for import attributes in ambient module declarations. Motivating example (from Vite team) Deno 2.6.6Rolldown 1.0 RC TC39 News via Rob PalmerFirefox 147 release notes for developers Nuxt 4.3CVEs affecting the Svelte ecosystem LibPDF, the PDF library TypeScript developers deservets2rs for converting TS types to Rust typesAnnouncing Mastra 1.0! PSA: Lodash Rolls Out Major Security OverhaulFrom the Community Daniel Roe calls out for npm frustrations, creating npmx.dev Tip: Supertype safety? WeakMap is a supertype of Map Super MonkeyBall in a browser Discussion: Types, Package.json, and Modules Next.js: Inside Turbopack: Building Faster by Building LessCool Links Crudy is an alternative to PostmanGameboy Games by @systemoflevers A Homebrew GPU for a Homebrew CPUTransforms 101 by ScottMusicSeahorse Dreams by Kubbi (Spotify)

    42 min

  2. 20/01

    Astro is Skyward Bound, Stable require(esm), and Temporal Finally Ships | News | Ep 52

    News for the week of January 12, 2025: Astro finds a new home, Chrome ships Temporal API, and latest Node marks require(esm) as stable. From the community: type-safe UI, how TypeScript differs at dev-time vs runtime, and Deno's (impressive) latency under load. 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 (05:11) - News: Astro Joins Cloudflare (06:09) - News: Astro 6 Beta Brings Parity to Dev and Prod Behavior (07:46) - News: Node 25.4.0 Brings Stable require(esm) (09:42) - News: Chrome 144 Ships Temporal, Safari... wen? (12:58) - Library Watch: Ohm Lets You Build Parsers, Interpreters, and Compilers (14:07) - PSA: Fastify Express Middleware Bypass Vulnerability (15:09) - Community Highlight: Daniel Rosenwasser Fixes BOM Bug (15:53) - Community Highlight: Type-safe UI by Andrew Hathaway (16:51) - Community Highlight: Forcing TS to Be Exhaustive by Carlos Menezes (18:11) - Community Highlight: Deno's Low Latency Under Load (19:43) - Community Highlight: Deno 2.6.5 Adds WebP and GIF Support to createImageBitmap (20:08) - Community Highlight: TypeScript. Runtime. And In-between by Ariel Shulman (20:48) - Community Highlight: You Should Be Using Dev Containers (21:42) - Community Highlight: useOptimistic Won't Save You by Colum Kelly (22:09) - Community Highlight: React Native Best Practices for AI Agents by Callstack (23:39) - Bleet of the Week (24:23) - Cool Link: Gameboy LEGO Set (25:00) - Cool Link: Global Game Jam is Happening Soon (25:56) - Cool Link: Realistic Terrain with Wave Function Collapse (27:19) - Cool Link: Complete CSS Course by Andy Bell (29:13) - The Minnesota Long Goodbye News Astro: The Astro Technology Company joins Cloudflare Theo: Cloudflare takes on Next.js Astro: Astro 6 Beta Node 25.4.0 is out: Joyee Cheung BSky ThreadChrome 144: Temporal shipped, Safari its your turn (via Andy Bell)Sarah Gooding: Temporal API Ships in Chrome 144, Marking a Major Shift for JavaScript Date Handling (via Rob Palmer)Temporal PolyfillDifferential serving / bundling by Jeremy WagnerLibrary Watch: Ohm (via JavaScript Weekly Issue 768: January 13, 2026)PSA: Fastify Express middleware can be bypassedFrom the Community Daniel Rosenwasser found a latent bug in TS 6.0 with BOMs and strict testingAndrew Hathaway: Type-Safe User Interfaces & the Manifest Pattern Carlos Menezes: Forcing TypeScript to be exhaustive Deno: P99 Latency is 72% Lower Than Node.jsDeno: Deno 2.6.5 Adds WebP and GIF Support to createImageBitmap Ariel Shulman: Typescript. Runtime. And in Between. - Ariel Shulman - NDC Copenhagen 2025 Syntax/Coding Garden: you should be using dev containersColum Kelly: useOptimistic Won't Save You (via React Weekly Issue #3) Callstack: Announcing: React Native Best Practices for AI Agents (via React Weekly Issue #3)Cool Links Cool Buy: Game Boy™ 72046 LEGO setCool Link: Global Game Jam  is happening!Cool Code: Wave Function Collapse by jyoung4242 (plus a sprite animation creator)Cool Course: Complete CSS - Piccalilli by Andy Bell MusicSeahorse Dreams by Kubbi (Spotify)

    32 min

  3. 14/01

    Node.js Patch Tuesday, Fix Unused Imports, and Why Logging Sucks | News | Ep 51

    News for the week of January 5, 2025: patch all your Node.js installations! Like now! Plus, a new TypeScript ESLint fixer for unused imports. From the community: why we all suck at logging, the concise TypeScript book, and all the JS engines in one page. 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 (05:59) - News: Node.js Patch Tuesday (12:13) - News: Astro 2025 Year in Review (13:19) - News: What's New in ViteLand, December 2025 (13:41) - News: TypeScript ESLint 8.5.3 Adds Unused Import Fixer (14:16) - Library Watch: Typique, Bundler Agnostic CSS-in-TS (19:04) - Community Highlight: JS Engine Zoo by Ivan Krasilnikov (21:24) - Community Highlight: Logging Sucks by Boris Tane (24:49) - Community Highlight: Optique Sync/Async Mode Support by Hongmin Lee (25:44) - Community Highlight: Use Vitest Projects by How to Test Frontend (26:27) - Community Highlight: The Concise TypeScript Book by Simone Poggiali (28:08) - Community Highlight: Syntax.fm with Dimitri on Type Slayer (29:02) - Community Highlight: Jake Bailey's GopherCon Talk Now on YT (29:47) - Community Highlight: Things-viz, Visualize Your Things 3 Todo Lists (30:40) - Bleet of the Week (31:09) - Secret of the Handbook: Decorators (33:47) - Cool Link: TransparentTextures.com (34:25) - Cool Link: FreeToUse.com (35:11) - Cool Product: Mighty-3 Music Player (37:51) - The Minnesota Long Goodbye News Node PSA: Security Releases for January 13Astro: 2025 Year in ReviewVoidZero: What’s New in ViteLand: December 2025 Recap TypeScript ESLint 8.53.0: Unused ImportsLibrary Watch: aleksei-berezkin/typique: Bundler-agnostic, zero-runtime CSS-in-TSFrom the Community Ivankra: Javascript Engine ZooBoris Tane: Logging SucksHongmin Lee: Optique's type-safe sync/async mode supportHow to Test Frontend: Why you should start using projects in Vitest configurationSimone Poggiali: The Concise TypeScript BookSyntax.fm: How this guy got DOOM running purely in TypeScript Types Devtools.fm: Storybook ModernizationJake Bailey: Porting TS to Go (Gophercon talk)David Crespo: Things-viz TypeScript CLISecret of the Handbook: TypeScript Decorators Deep DiveCool Links Transparent Textures - Create background tiling imagesFree to Use - Like Lofi musicMighty 3 music playerMusicSeahorse Dreams by Kubbi (Spotify)

    43 min

  4. 6/01

    The Grinch Stole MongoDB, a Backend Library Called Vla, and Strongly-typed Event Emitters | News | Ep 50

    News for the weeks of December 22 and 29, 2025: MongoDB exploit drops on Christmas day in true Grinchy fashion, a new backend library called Vla that is far from blah, and starter templates for your next React Native app. From the community: NodeTLV keynote, strongly-typed events in gamedev, and a 6-hour deep dive into Doom in TS. 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 New Year (07:52) - News: The Grinch Stole Your Secrets with MongoBleed (10:39) - News: Node.js Security Release Expected January 7 (11:13) - Library Watch: Vla, the Missing Backend Library for TypeScript (13:13) - Library Watch: macOS iMessage API SDK for TypeScript (13:53) - Library Watch: React Native UI Templates (14:51) - Library Watch: js-draw, a Canvas Drawing Library (15:48) - Community Highlight: Strongly-typed Events in GameDev by Justin Young (16:19) - Community Highlight: Flint, a Modern Linting Engine by Josh Goldberg (16:42) - Community Highlight: Tooling Like It's 2025 by Josh Goldberg (16:59) - Community Highlight: Major Color.js Update by Lea Verou (19:18) - Community Highlight: Building Reusable Form Component Library with TanStack Form by Matt Huggins (19:54) - Community Highlight: Static Hermes is Pretty Cool by Devon Govett (21:11) - Community Highlight: DOOM in TS Types Stream by MiTS (22:09) - Community Highlight: Solitaire in TypeScript by Oidoid (22:57) - Community Highlight: Lo-fi Valley Engine by Leocast (24:12) - Bleet of the Year (25:26) - Cool Link: TypeScript Function Inlining (25:49) - Cool Link: Pass Key Explainer (29:58) - Cool Game: Outer Worlds 2 (31:26) - The Minnesota Long Goodbye News PSA: Exploited MongoBleed flaw leaks MongoDB secrets, 87K servers exposed PSA: Node.js — Wednesday, January 7, 2026 Security Releases Library Watch: Vla, a data layer that integrates into any TypeScript frameworkLibrary Watch: TypeScript SDK for iMessage automation on macOSLibrary Watch: React Native UI TemplatesLibrary Watch: js-draw, pencil/pen drawing utilities for JS and CanvasFrom the Community Justin Young: Strongly Typed Events in GameDevJosh Goldberg: NodeTLV Keynote, Tooling Like It's 2025 Josh Goldberg: What Flint Does DifferentlyLea Verou: ColorJS major releaseMatt Huggins: Building a Reusable Form Component Library with TanStack FormDevon Govett: Static Hermes is pretty coolMiTS: Doom TS deep dive streamoidoid: Super Patience - Pixelated Solitaire in TypescriptLeoocast: Lofi Valley Engine - Make your dream Stardew Valley clone Cool Links Cool Watch: How Passkeys Work - Computerphile Cool Tool: JoshuaKGoldberg/ts-function-inliner: TypeScript transformation that inlines calls to small functionsCool Game: Outer Worlds 2, from the developers of Fallout: New Vegas and AvowedMusicSeahorse Dreams by Kubbi (Spotify)

    34 min

  5. 23/12/2025

    Modernization Agents, Standard Schema V1, and Year-end Podcast Wins | News | Ep 49

    Our last episode for 2025, see you in 2026! News for the week of December 15 2025: Microsoft's experimental JS/TS modernization agent, new Next.js and Bun releases, and how pnpm is tightening the security screws. From the community: when to use types vs. interfaces, actionable tips on securing your local dev environment, and tips on using TypeScript types as a programming language. MCP in Practice CourseOut now. Kamran shows you how to build a practical enterprise-grade MCP server with .NET, C#, and OAuth, hosted remotely on Azure. (Requires subscription) 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 (05:18) - News: TSGo Now Supports Experimental Decorators (06:18) - News: JS/TS Modernization Agent for VS Code (09:47) - News: Next.js 16.1 Brings Turbopack Caching and a Build Analyzer (10:32) - News: Bun 1.3.5 ft. Terminal Simulator, Compile-time Feature Flags (12:50) - News: Standard Schema V1 Released (14:24) - News: pnpm 10.26 Has Stricter Security Defaults (16:16) - News: Node Security Updates Pushed to Jan 7 (16:52) - Library Watch: numpy-ts, NumPy but in 100% TypeScript (18:57) - Library Watch: tinypdf and tinydocx, Minimal Document Creation (20:02) - Community Highlight: npm Security Best Practices by Liran Tal (23:10) - Community Highlight: TypeScript Types as a Programming Language by Thiery Michel (24:46) - Community Highlight: Build a Dino Runner in Deno, pt 3 (25:26) - Community Highlight: Types vs. Interfaces by Yan Sun (26:31) - Community Highlight: Eleventy's Progress on Zero Config TS (27:10) - Bleets of the Week (28:24) - Cool Link: noclip.website Lets You Explore Retro Game Levels (29:46) - Cool Tool: unplugin-inline-functions for Inlining Functions (31:48) - Cool Tool: rsdoctor, Analyze Rspack and Webpack Bundles (33:26) - The Minnesota Year-long Goodbye News Excalibur.js V0.32.0 holiday releaseTSGo PR #2343 adds experimental decorators supportMicrosoft: Announcing the JavaScript/TypeScript Modernizer for VS CodeNext.js 16.1 adds Turbopack improvementsBun: 1.3.5 release terminal simulator (PTY) and compile-time feature flag dead-code eliminationStandard Schema V1 release (h/t ArkType and Josh Goldberg) Library Watch: https://www.npmjs.com/package/numpy-tsLibrary Watch: Lulzx/tinydocx: Minimal DOCX/ODT creation libraryLibrary Watch: Lulzx/tinypdf: Minimal PDF creation library From the Community Liran Tal: NPM Security Best Practices: How to Protect Your Packages After the 2025 Shai Hulud AttackThiery Michel via MarmeLab: TypeScript Types as a Programming Language Deno Runner, Part 3: Build a dinosaur runner game with Deno, pt. 3 Yan Sun via LogRocket: Types vs. interfaces in TypeScript Zach Leatherman: 11ty Zero Config TypeScriptCool Links Cool Plugin: krispya/unplugin-inline-functions - Vite/unplugin for C/C++ style inlining Cool Link: NoClip.website lets you fly around classic game levels like Super Paper Mario, Majora's Mask, and Mario Kart WiiCool Tool: rsdoctor is a bundle analyzer for Rspack-family of tools (and webpack!)MusicSeahorse Dreams by Kubbi (Spotify)

    46 min

  6. 17/12/2025

    Deno 2.6 Adds dx and TSGo, Temporal API in Chrome 144 Beta, and JSDoc *is* TypeScript | News | Ep 48

    News for the week of December 8 2025: Deno 2.6 is packed with some cool features, Node 24 LTS ships stable type stripping, more React CVEs, and some new browser updates. From the community: JSDoc love, slay your TS type performance, and Figma's plugin system is built on shadows. MCP in Practice CourseOut now. Kamran shows you how to build a practical enterprise-grade MCP server with .NET, C#, and OAuth, hosted remotely on Azure. (Requires subscription) 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 (06:13) - News: TypeScript 6.0 Will Remove the module Keyword (07:57) - News: Node 24 LTS Now Has Stable Type Stripping (08:49) - News: npm Has Revoked Classic Tokens (09:41) - News: Deno 2.6 Adds dx Command, TSGo Support (12:42) - News: Follow-up CVEs for React and Next.js (15:29) - News: Safari 26.2 Updates (18:36) - News: Chrome 144 Beta Ships Temporal API (19:17) - Library Watch: Kysera, Type-safe Data Access Toolkit (20:36) - Library Watch: Elysia, a Backend TS Framework (22:49) - Library Watch: multithreading.js, the Missing Standard Library for Concurrency (24:43) - Library Watch: typedriver, for Runtime Type System Integration (26:53) - Community Highlight: Typeslayer, Debugging Type Performance (28:32) - Community Highlight: JSDoc *is* TypeScript by culi (30:24) - Community Highlight: Call to Sponsor ESLint by Nicholas Zakas (30:47) - Community Highlight: Typing Cypress Aliases by Gleb Bahmutov (31:54) - Community Highlight: Figma's Plugin System (34:52) - Community Highlight: Vite 8 Now Reports Slow Plugins (35:11) - Community Highlight: machine, a TypeScript State Machine Library (35:54) - Community Highlight: Dino Runner Game in Deno, Part 2 (36:32) - Community Highlight: ArkType and Zod Creators Team Up (36:57) - Secret of the Handbook: String Literal Template Types (38:23) - Cool Game: Moomintroll Game on Steam (39:01) - Cool Link: Slop Detective by Kagi (39:29) - Cool Conference: NDC Toronto is Announced (40:11) - Cool Code: Tiny Physics in JS (41:19) - Cool Tool: Perro Engine Can Transpile C#/TS to Rust (42:41) - The Minnesota Long Goodbye News TypeScript: In 6.0, you can’t use `module ns` use `namespace ns`Node.js: Type Stripping is marked stable in Node 24 (LTS) release linenpm has revoked classic tokens but there are still risksDeno 2.6: dx is the new npx React Security: Denial of Service and Source Code Exposure in React Server Components WebKit Features for Safari 26.2 Chrome 144 Beta: Getting the Temporal APILibrary Watch: Kysera – type-safe data accessLibrary Watch: ElysiaJS – end-to-end typing web framework built on BunLibrary Watch: multithreading.js – The missing standard library for multithreading in JavaScript (Works in the browser, Node.js, Deno, Bun) Library Watch: Typedriver – sinclairzx81/typedriver: High Performance Driver for Runtime Type System Integration  From the Community Dimitri and MiTS: TypeSlayer - a TypeScript types performance tool  🤘 Culi: JSDoc *is* TypeScriptNicholas Zakas: ESLint Needs Sponsors Gleb Bahmutov: How To Type Function Mocha Context With Cypress Aliases Figma: How We Built Figma's Plugin SystemDoeixd: machine – compile-time safe state machineDeno: Build a dinosaur runner game with Deno, pt. 2 Kobi Hari: How Did I Miss This After 5 Years: TypeScript’s String Literal TemplatesCool Links Moomintroll Winters Warmth Slop Detective from KagiNDC is coming to Toronto! Tiny JS physics Perro – a Rust game engine that transpiles C#/TS for game logicMusicSeahorse Dreams by Kubbi (Spotify)

    47 min

  7. 11/12/2025 · BÓNUS

    Elide Runs TypeScript Faster Than Node Runs JavaScript | Sam Gammon | Ep 47B

    Sam Gammon joins the two fools to talk about Elide, a batteries-included multi-language runtime. What if you could import Python modules from TypeScript... or Ruby, or Kotlin, or Rust? What if you could consolidate multiple backends to just one that ran all your code end-to-end with a unified DX? And what if doing all that was just as fast (or faster) than your existing backend? That's what we talk about in this episode! Resources Elide on GitHubElide docsJoin the Elide Discord serverWhere to Follow the Team Sam on GitHubSam on XChapters (00:00) - Introducing Elide, a Multi-language Runtime Built on GraalVM (03:51) - Why Support Multiple Languages? (07:42) - What is GraalVM, anyway? (09:43) - What are the Languages Elide Supports Today? (10:53) - How Does Elide Interop Between Languages? (14:03) - What Magic Allows TypeScript to Import a Python Module? (16:12) - How Does Elide's API Compare to Other Runtimes? (18:26) - Elide's Embedded Inference Engine and API (20:11) - How Does Elide Handle Idioms Like Promises? (22:39) - What About Single- vs. Multi-threading? (24:41) - What About Concurrency and Isolation? (28:33) - Does Elide Help with Serverless Cold Starts? (29:25) - Can Elide Compile Single-file Executables? (31:06) - How is TypeScript So Fast in Elide? (33:34) - Can We Start Building with Elide? (35:14) - How Do You Debug Across Multiple Languages? (38:13) - Where Does Elide Really Shine? (40:56) - How is Elide Planning to Win? (42:53) - Could Elide Support a Native Runtime Type System? (45:26) - Takeaways and Where to Learn More Sponsored by Excalibur.jsExcalibur.js is the friendly TypeScript 2D game engine for the web. Use your TypeScript or JavaScript skills to make games! Excalibur comes out-of-the-box with everything you need to make web games, like physics, sprites, animations, sound effects, input, tile maps, particles, and more. Homepage and Docs: https://excaliburjs.comMake Your First Game in 10 MinutesJoin the Discord: https://discord.gg/9UemP985UyMusicSeahorse Dreams by Kubbi (Spotify)

    49 min

  8. 09/12/2025

    Anthropic's Bet on Bun, React2Shell, Vite 8 Beta, and Elves Spam npm | News | Ep 47

    News for the week of December 1, 2025: Anthrophic acquired Bun, React2Shell is pretty darn bad (and that's not all), plus "elf spam" packages on npm. From the community: tRPC vs. oRPC, demystifying TSConfig, and hash-slash (#/) project-relative import support in Node. MCP in Practice CourseWatch now. Kamran shows you how to build a practical enterprise-grade MCP server with .NET, C#, and OAuth, hosted remotely on Azure. (Requires subscription) 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 (04:09) - Kamran's MCP in Practice Course is Now Live on Pluralsight (08:35) - News: Anthropic Acquires the Bun JavaScript Runtime (13:41) - News: Vite 8 Beta with Rolldown (15:40) - News: tsdown 0.17 Release (17:10) - News: oxlint Brings Type-aware Linting in Alpha (17:50) - News: oxfmt Alpha is 30X Faster Than Prettier (18:45) - News: Gird Your Loins for Upcoming Node.js Security Releases (19:38) - News: React2Shell Remote Code Execution Exploit in RSC (26:55) - News: React2Shell Causes Yet Another Cloudflare Outage (28:16) - News: Santa's Elves Flood npm With Naughty "Gifts" (30:10) - News: SVG Clickjacking Exploit Using Filters (32:05) - Community Highlight: tRPC vs. oRPC for Your Next TypeScript Project? (33:15) - Community Highlight: Testing Vue Composables in TypeScript by John Franey (34:03) - Community Highlight: Formisch for React Quietly Released by Fabian Hillar (34:53) - Community Highlight: Building a Dinosaur Runner Game in Deno (36:19) - Community Highlight: Node Will Soon Support Project Root Import Paths (37:51) - Community Highlight: TSConfig Grimoire by Bjorn Lu (39:01) - Community Highlight: How is ESM vs. CJS Going? by Titus (40:45) - Community Highlight: Next Astro Release Supports Vite Environments API (41:18) - Bleet of the Week by Joke Bailey (42:10) - Cool Read: Godot Shaders Bible by Fabrizio Espendola (42:56) - Cool Watch: Cancellation Tokens by Stephen Toub (43:44) - Cool Game: Classic Game Zork is Released as Open Source (44:16) - Cool Tool: Helion, a Modern DOOM Engine (45:18) - Cool Watch: Modern .NET Serialization Attacks by Hampton Paulk (47:25) - Cool Reads: Architecture for Flow and Domain-driven Transformation (48:40) - The Minnesota Long Goodbye News Bun: Bun is joining Anthropic ViteLand: Vite 8 Beta: The Rolldown-powered ViteViteLand: Announcing Oxlint Type-Aware Linting AlphaViteLand: The first Oxfmt alpha was releasedViteLand: tsdown got a new releaseNode.js PSA: Prepare for Monday, December 15, 2025 Security ReleasesCloudflare: Cloudflare outage on December 5, 2025Security: npm Sees Surge of Auto-Generated “elf-stats” Packages Published Every Two Minutes via (Sarah Gooding)Security: SVG Filters - Clickjacking 2.0 Ʊ lyra's epic blog React2Shell Resources React2Shell Exploit: Critical Security Vulnerability in React Server ComponentsDeep Dive: https://react2shell.com/Next.js: Security Advisory: CVE-2025-66478Deno Blog: React Server Functions / Next.js Vulnerability: Deno Deploy users protected Explainer: this is the worst case scenario by LowLevelEd From the Community Temitope Oyedele: tRPC vs oRPC: Which is better for your next TypeScript project, and why?John Franey: How to test a Vue composable with TypeScript · JohnFraney.caFabian Hiller: Formisch for React just released (quietly) – the form library that powers SolidJS Deno: Build a browser game in Deno Hybrist: Node support for #/ wildcard (via Rob Palmer)Bjorn Lu: TSConfig Grimoire (via Rob Palmer)Wooorm: How is ESM from Common going?Astro: Next release of Astro will support Vite Environment APICool Links Cool Read: Godot Shaders Bible and Ghastly in Desmos by Fabrizio EspindolaCool Watch: Cancellation Tokens with Stephen ToubCool Game: Preserving code that shaped generations: Zork I, II, and III go Open Source Cool Tool: Helion Engine, a modern DOOM engine in C#Cool Watch: Modern .NET Serialization Attacks by Hampton PaulkCool Reads: Architecture for Flow and Domain-driven TransformationMusicSeahorse Dreams by Kubbi (Spotify)

    56 min
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The two TypeScript Fools, Kamran Ayub and Erik Onarheim, get together weekly to bring you news, community highlights, and deep dives into the TypeScript ecosystem. Stay up-to-date on what's happening and learn new things to make you a better TypeScript developer along the way!

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