TypeScript.fm - The Friendly Show for TypeScript Developers | Vitest 5, rslib 1.0, and the No Sloptober Challenge | News

Vitest 5, rslib 1.0, and the No Sloptober Challenge | News | Ep 80

September 15, 2026 / 52:46/E80 Download MP3

News for the week of Aug 31, 2026: Vitest 5's new doctor command and perf enhancements, Rslib is now stable, and Astro 7.3 lets you run multiple preview servers at once. From the community: build circuit boards in React, TypeScript for Ruby devs, and another compile-time crime of implementing Brainf*** in TypeScript types.

Parake in the No Sloptober Challenge!
Head to no-sloptober.com to read the manifesto and see if you can challenge yourself to turn off LLMs and AI for October.

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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
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Join the Discord: https://discord.gg/9UemP985Uy

Chapters

(00:00) - Welcome to the Show
(05:51) - Personal Challenge: No Sloptober
(10:53) - Tooling: Strongly-typed Normalized File Paths in the TS Codebase
(13:05) - Tooling: Ember for TS 7 Declared Ready
(14:23) - Tooling: Bun 1.4.1 Now Types Import Attributes in TS 7.1 Nightly
(14:49) - Tooling: Vitest 5 Brings Trace View, Doctor, and Temporal Mocking
(17:08) - Tooling: rslib 1.0, like TSDown But Built on rspack
(20:41) - Metaframeworks: Astro 7.3 Can Run Multiple Preview Servers at Once
(21:16) - Security: Outsource Vulnerability Remediation to Cloudflare's Managed Defense
(24:08) - Library Watch: Starlight 0.42
(25:17) - Library watch: HQTUI, a High Quality Terminal UI
(26:08) - Library Watch: tsmc, a TypeScript Runtime Written in minc
(27:27) - Library Watch: tscircuit, React for Electronics
(29:01) - Library Watch: jasypdf, Declarative PDFs in Pure TypeScript
(30:04) - Library Watch: @stdlib/stdlib, Fundamental Numerical Library for JS and TS
(30:24) - Library Watch: RetroImgHandler Can Decode, Validate, Convert, Preview, and Encode Retro Graphics
(31:12) - Library Watch: causewalk, Inner Exception Unwrapping
(33:12) - Library Watch: numpy-ts 1.7.0 is Now Faster Than Native NumPy
(34:12) - Community: Kev Helps Ruby Devs Learn TypeScript
(34:48) - Community: Hugo Wrote Brainf*** in TypeScript Types
(36:23) - Community: How Turbopack Chunks Your JavaScript by Next.js
(36:52) - Community: How Next.js Closed 1500 GitHub Issues in One Month
(38:32) - Community: What's New in Svelte, Aug 2026
(38:52) - Community: David Dal Busco Wrote Two Tiny Utils for the Result Pattern
(40:54) - Community: Matt Pocock Praises Effect.ts for Backends
(41:38) - Bleet of the Week
(42:26) - Cool Link: Bookmarklet to Open a New Tab Next to the Current One
(44:25) - Cool Link: Understanding TETRIS as a Game Developer
(45:59) - Cool Link: Orbliterate! A Game That Uses CAD for Level Design
(47:03) - The Minnesota Short Goodnight