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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.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.
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
- (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
- Astro: Astro 6 Beta
- Node 25.4.0 is out: Joyee Cheung BSky Thread
- Chrome 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 Polyfill
- Differential serving / bundling by Jeremy Wagner
- Library Watch: Ohm (via JavaScript Weekly Issue 768: January 13, 2026)
- PSA: Fastify Express middleware can be bypassed
From the Community
- Daniel Rosenwasser found a latent bug in TS 6.0 with BOMs and strict testing
- Andrew Hathaway: Type-Safe User Interfaces & the Manifest Pattern
- Carlos Menezes: Forcing TypeScript to be exhaustive
- Deno: P99 Latency is 72% Lower Than Node.js
- Deno: 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 containers
- Colum 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 set
- Cool 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
Creators and Guests
What is TypeScript.fm - The Friendly Show for TypeScript Developers?
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!