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

TypeScript.fm - The Friendly Show for TypeScript Developers

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.

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Chapters

• (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 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)