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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 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.
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
- (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 release
- TSGo PR #2343 adds experimental decorators support
- Microsoft: Announcing the JavaScript/TypeScript Modernizer for VS Code
- Next.js 16.1 adds Turbopack improvements
- Bun: 1.3.5 release terminal simulator (PTY) and compile-time feature flag dead-code elimination
- Standard Schema V1 release (h/t ArkType and Josh Goldberg)
- Library Watch: https://www.npmjs.com/package/numpy-ts
- Library Watch: Lulzx/tinydocx: Minimal DOCX/ODT creation library
- Library 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 Attack
- Thiery 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 TypeScript
Cool 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 Wii
- Cool Tool: rsdoctor is a bundle analyzer for Rspack-family of tools (and webpack!)
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!