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 Course
Out 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.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Chapters

• (00:00) - Welcome to the Show

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 line
• npm has revoked classic tokens but there are still risks
• Deno 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 API
• Library Watch: Kysera – type-safe data access
• Library Watch: ElysiaJS – end-to-end typing web framework built on Bun
• Library 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* TypeScript
• Nicholas Zakas: ESLint Needs Sponsors 
• Gleb Bahmutov: How To Type Function Mocha Context With Cypress Aliases 
• Figma: How We Built Figma's Plugin System
• Doeixd: machine – compile-time safe state machine
• Deno: Build a dinosaur runner game with Deno, pt. 2 
• Kobi Hari: How Did I Miss This After 5 Years: TypeScript’s String Literal Templates

Cool Links

• Moomintroll Winters Warmth 
• Slop Detective from Kagi
• NDC is coming to Toronto! 
• Tiny JS physics 
• Perro – a Rust game engine that transpiles C#/TS for game logic

Music
Seahorse Dreams by Kubbi (Spotify)

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 GitHub
• Elide docs
• Join the Elide Discord server

Where to Follow the Team

• Sam on GitHub
• Sam on X

Chapters

• (00:00) - Introducing Elide, a Multi-language Runtime Built on GraalVM

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Music
Seahorse Dreams by Kubbi (Spotify)

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 Course
Watch 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.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Chapters

• (00:00) - Welcome to the Show

News

• Bun: Bun is joining Anthropic 
• ViteLand: Vite 8 Beta: The Rolldown-powered Vite
• ViteLand: Announcing Oxlint Type-Aware Linting Alpha
• ViteLand: The first Oxfmt alpha was released
• ViteLand: tsdown got a new release
• Node.js PSA: Prepare for Monday, December 15, 2025 Security Releases
• Cloudflare: Cloudflare outage on December 5, 2025
• Security: 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 Components
• Deep Dive: https://react2shell.com/
• Next.js: Security Advisory: CVE-2025-66478
• Deno 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.ca
• Fabian 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 API

Cool Links

• Cool Read: Godot Shaders Bible and Ghastly in Desmos by Fabrizio Espindola
• Cool Watch: Cancellation Tokens with Stephen Toub
• Cool 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 Paulk
• Cool Reads: Architecture for Flow and Domain-driven Transformation

Music
Seahorse Dreams by Kubbi (Spotify)

News for the week of November 24, 2025: TypeScript team discusses progress on TS 7 and upcoming deprecations for TS 6. Plus, Svelte's new hydratable API. From the community: creating strongly-typed CLIs with yargs, magic union types to check characters, and how TypedArray can reduce memory usage.

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Chapters

• (00:00) - Welcome to the Show

News

• TypeScript Blog: Progress on TypeScript 7
• Advent of Code is live!
• Svelte 5.44.0 introduces `hydratable` API
• Vite+: New FAQ 
• Zed v0.214.0, now with better TS Errors
• TypeScript-ESLint 8.48.0 adds type union redundancy check
• Library Watch: spikard, a polyglot API toolkit
• Library Watch: Optique 0.7.0 (via Hong Minhee)

From the Community

• Marco Ippolito: Summer I Shipped Type Stripping
• John Reilly: Yargs: statically typed builder commands (via johnnyreilly)
• Telerik: Zod + TypeScript: Schema Validation Made Easy 
• TypedRocks: The Secret Power of The  Lowercase & Uppercase UNION in TypeScript 
• Brad Zacher: Improving Bazel TypeScript TypeChecks With IsolatedDeclarations (via Rob Palmer)
• Aapo Alasuutari: Interlude: A data-oriented model
• Software Engineering Daily: Josh and Dmitri talk about Doom in TypeScript Types

Cool Links

• Cool Watch: NFTI building a 3D printed castle
• Cool Watch: Predators (2010)
• Cool Watch: dotnetconf
• Cool Link: Aspire.dev, code-first local dev environments

Music
Seahorse Dreams by Kubbi (Spotify)

News for the week of November 17, 2025: Angular 21 is zoneless by default and adds Vitest support, plus Shai-Hulud worm hits another 500+ npm packages. What's a dev to do??? From the community: you basically know C# if you already know TypeScript and a new decorator-free dependency injection library inspired by Autofac.

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Chapters

• (00:00) - Welcome to the Show

News

• Announcing Angular v21  – zoneless by default, adds signal forms, and has Vitest support in CLI
• Astro 5.16 – introduced a utility type to get action schema
• TC39 Proposals Advance (h/t @robpalmer)
• Socket.dev: Shai Hulud Strikes Again (v2)
• Tip: Replace fast-glob with tinyglobby
• Tip: NPM Ignore Scripts Best Practices as Security Mitigation for Malicious Packages
• Library Watch: NovaDI - Decorator-free Dependency Injection for TypeScript 
• Library Watch: UI5 SAP gets typings

From the Community

• Charles Chen: TypeScript is Like C#
• Dominik: Omit for Discriminated Unions in TypeScript
• Karl Beuer: VSCode Extension to convert Go structs to TS interfaces 
• NotNite: function hooking in Deno

Cool Links

• Cool Read: Unlocking Access to Game Publishing Documentation for All Developers by Xbox
• Cool Watch: Making a Small RPG by JSLegend
• Cool Game: Outer Worlds 2

Music
Seahorse Dreams by Kubbi (Spotify)

News for the week of November 10, 2025: Node 25 marks type stripping as stable, the downlow on some new Rust-based JavaScript and TypeScript engines, and a new browser for keyboard lovers. From the community: visualize how types work, using .NET Aspire without .NET, type-safe SQL, and an experimental Rust-based type checker.

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Chapters

• (00:00) - Welcome to the Show

News

• TS 6.0 Expected in Early 2026
• Node 25.2.0 (Current) marks type stripping as stable!
• Andromeda, a native TypeScript runtime alternative to Deno (h/t Rob Palmer)
• Brimstone, a JavaScript engine written from scratch in Rust
• Glide, a Firefox-based browser for neovim dandies

From the Community

• Kit Langton: Visual Types — A Set of Animated TypeScript Concepts (h/t Reddit)
• David Gardiner: Aspire with Python, React, Rust and Node apps
• Rob Palmer: Alternative names for ECMAScript that were originally considered
• Library Watch: squeeel, a type-safe SQL builder
• Library Watch: DomoActors-TS, a TypeScript library for the actor model
• Library Watch: Contour 2.0 “Music Composition as Code” (h/t kootenay-eric)
• Library Watch: Hashery (h/t jaredwray.com)
• Tool Watch: Ezno, a Rust TypeScript type checker (h/t fasterthanli.me)

Cool Links

• Cool Watch: PolyMatt on YouTube makes a floppy disk from scratch
• Cool Tool: Quicker.nvim, a better quickfix list
• Cool Tool: gemshell, a tool to package up web games
• Cool Tool: Debug your Docker build context
• Cool Read: Building an MCP Server for Nuxt
• Cool Tool: WXT – a modern web extensions framework
• Cool App: xelly.games  - a game-sharing social network

Music
Seahorse Dreams by Kubbi (Spotify)

Daniel Rosenwasser and Jake Bailey join the two fools to talk about what's coming soon in TypeScript 6 and 7. What changes should developers expect? What might the new compiler API look like? How is the Go port progressing? We talk about smarter (and stricter) defaults, ES targets, module resolution, and why it's hard to emulate JavaScript floating point semantics in Go.

Chapters

• (00:00) - Introducing Daniel and Jake

Resources

• TypeScript Homepage
• TypeScript Native Go Port

Where to Follow the Team

• Jake on BlueSky
• Daniel on BlueSky

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Music
Seahorse Dreams by Kubbi (Spotify)

News for the week of November 3, 2025: Node 24 promoted to LTS, Nuxt Image V2 is full of TS goodies, and Anders is humbled by TypeScript's rise. From the community: TypeScript is not a substitute for good engineering, why codemods are helpful, and examples of using the satisfies keyword.

Chapters

• (00:00) - Welcome to the Show

News

• Housekeeping: Follow and subscribe to TypeScript.fm on YouTube/Music!
• Node.js PSA: 24.x Release Line is now the Active LTS
• GitHub: TypeScript’s rise in the AI era: Insights from Lead Architect, Anders Hejlsberg
• Nuxt Image v2 is full of TypeScript goodies
• PSA: Flaw in React Native CLI opens dev servers to attacks

From the Community

• Codecademy: TypeScript is the Most-Used Language on GitHub — Here’s Why
• Christian Ekrem: Why TypeScript Won't Save You
• David A. Lee: What do flash floods and Typescript have in common?
• Node.js: What is Userland Migrations?
• Marc Dahmen: Building Sortable Tree — A Lightweight Drag & Drop Tree in Vanilla TypeScript
• Marco Ippolito: Type Stripping is Going to Be Unflagged Soon!
• Marek Honzal: Immutable by Default: Practical TypeScript Patterns
• Snap: Valdi, a TypeScript-based cross-platform UI framework
• Library Watch: Izumi Chibi, a port of Scala's DIStage phased dependency injection
• Library Watch: Tokiforge, a modern framework-agnostic design token and theming engine
• Library Watch: Mastro.{js,ts}, the simplest web framework and site generator

Cool Links

• Erik's Buffalo Chicken Dip Recipe
• Syntax.fm CSS battles
• The Hive: Building a beehive simulation desk
• This Week in Svelte, Ep. 121 — Changelog, Svelte MCP Server

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Music
Seahorse Dreams by Kubbi (Spotify)

News for the week of October 27, 2025: TypeScript is the #1 language on GitHub, making your Regex type-safe, and Biome adds support for three new metaframeworks. From the community: a metaframework for Angular, PHP in JS, and a polyglot runtime that will blow your mind.

Chapters

• (00:00) - Welcome to the Show

News

• Octoverse: TypeScript is the most used language on GitHub 🎉
• Bun: Vercel now supports the Bun Runtime 
• ArkType: Introducing ArkRegex (Reddit, Discord, Bluesky)
• Aikaido: Introducing Safe Chain: Stopping Malicious npm Packages Before They Wreck Your Project
• Biome 2.3 supports Vue, Svelte, Astro, and more. 
• VoidZero: What’s New in ViteLand: October 2025 Recap

From the Community

• Friend of the Show Josh Goldberg is looking for a full time position 👀
• AnalogJS 2.0 is a metaframework for Angular with SSR/SSG and file-based routing
• Alexander Lichter: Wait - PHP IN JS!? What is rendu
• Elide is a polyglot runtime, think: import Python modules from TypeScript
• Tool Watch: acrazing/dpdm: Detect circular dependencies in your TypeScript projects
• Library Watch: gorango/flowcraft: A lightweight workflow engine 
• Tool Watch: Trigger.dev, a hosted agentic workflow engine
• Fabi.dev quick tip: Do you know the difference between || and ??
• muszynov: How to use the infer keyword in Typescript

Cool Links

• Cool Watch: 10 useful CLI apps I'm guessing you've not heard of
• Cool Watch: Oliver Medhurst - Porffor - JavaScript Ahead of Time Compiler 
• Cool Watch: Ladybird browser update (October 2025) 
• Cool Tool: Gimli Tailwind – a super hot looking TailwindCSS dev extension
• Cool Tool: PowerSync – local-first sync engine that works with Postgres, MySQL, and MongoDB

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Music
Seahorse Dreams by Kubbi (Spotify)

News for the week of October 20, 2025: Deno Deploy revamp, Vitest 4, Nuxt 4.2, and Next.js 16, all in a single week. From the community: 4 weird ways to cast in TypeScript (+2 to Arcana rolls), type-safe API clients, and the hottest JS REPL around.

Chapters

• (00:00) - Welcome to the Show

News

• Deno: My highlights from the new Deno Deploy
• Vitest 4.0 is out!
• Nuxt 4.2 is out!
• Next.js 16 is out!
• React Native 0.82 - A New Era (h/t TheNewStack)
• Node 22.21 LTS features native HTTP proxy support
• AshTypeScript 0.6.0 (bsky summary)
• A heroic update to DefinitelyTyped to prepare for TypeScript 6
• PSA: Critical Account Takeover in better-auth

From the Community

• Jake Archibald: PSA, don’t use top-level await right now in browsers
• Brian Muenzenmeyer: You Don’t Need a Dependency talk from JSConf is now live
• Brian Vaughn: react-window got a small TS compatibility fix for React 18-18.2
• Wolf Girl: 4 Unconventional Ways to Cast In TypeScript
• Matteo Collina: From curl Commands to Type-Safe API Clients: A Complete Workflow 
• Shola Jegede: How to Build a To-Do List MCP Server Using TypeScript – with Auth, Database, and Billing 
• Ge Gao: JS REPL with Types! (h/t Reddit)
• Moosestack (FiveOneFour): Just OLAP It: Transform Your OLTP ORM into a Type-Safe OLAP Data Model
• Library Watch: FTA Fast TypeScript Analyzer
• Bleet of the Week: “Anyone who writes bare JavaScript in 2025… is a maniac you shouldn’t trust”

Sponsored by Excalibur.js
Excalibur.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.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Music
Seahorse Dreams by Kubbi (Spotify)