Theo's $420K TS-Rust Port, bun check, and Deno Joins Cloudflare | News | Ep 85

News for the week of **October 5, 2026**: Theo spends $420,000+ porting the TypeScript compiler to Rust, the new Bun (type)check command claims 3-7x speedups, and Deno joins Cloudflare. From the community: ViteConf is October 15, GitHub moves off CSS-in-JS, and Syntax is donating. **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) - Tooling: ts-rust, a Vibe Port of TypeScript 7 to Rust - (06:03) - Tooling: bun check, 2-7X Faster Type Checking in Bun 1.4.3 - (10:07) - Tooling: bun Adds lint and format Commands, Forking oxlint and oxfmt - (11:27) - Tooling: terser Adds Erasable Types Support - (13:17) - Tooling: Node.js 26.11.0, New Docs and Benchmarking Perf Hooks - (15:22) - Frameworks: Next.js 16.4 Adds Cache Components Programming Model - (19:21) - Web Platform: Deno Joins Cloudflare, But Will No Longer Maintain the Runtime - (24:24) - Web Platform: Chrome 155+ Will Support JPEG XL - (26:12) - Security: Vite Dev Server CVE for Arbitrary Command Execution - (27:41) - Security: TanStack Start CVE for Reflected Cross-site Scripting - (28:37) - Security: zod and Other Packages Were Nearly Compromised - (30:38) - Security: New GhostAction Wave Steals Cloud and AI Credentials - (32:50) - Other News: Remembering Margaret Hamilton, Apollo Space Programmer - (33:14) - Library Watch: maligator, an AOT Compiler for JavaScript to C - (34:24) - Library Watch: fjson, a Friendly JSON-alike Language and Parser - (35:10) - Library Watch: logtape 2.4 - (36:23) - Library Watch: plumeria, Type-safe Zero-runtime Atomic CSS - (37:02) - Community: ViteConf is October 15 - (37:26) - Community: Syntax.fm Calling for Nominations to Fund OSS Maintainers - (37:48) - Community: GitHub is Switching from CSS-in-JS to CSS Modules - (40:13) - Community: Mark Built a JavaScript Runtime Over the Weekend Called Bento - (41:48) - Community: Grafana's Cuetsy and Thema TypeScript Code Generation - (42:26) - Bleet of the Week - (43:11) - Cool Event: Ludum Dare, Make a Game in 48 Hours - (44:02) - Cool Study: Where is the Bottleneck in Software Development and AI? - (45:46) - Cool Tool: TypeScript to Zod Schema Tool (and More!) - (46:40) - Cool Link: ascii.rest, Animated ASCII Art for Web Pages - (48:22) - The Minnesota Long Goodbye **News** - Tooling - Theo: ts-rust - Bun: Bun 1.4.3 - Terser: Experimental type erasure (via Rob Palmer) - Metaframeworks - Next.js: Next.js 16.4 - Web Platform - Cloudflare: Deno joins Cloudflare - Node: Node.js 26.11.0 (Current) - Chrome: Shipping JPEG XL in Chrome (155+) - Security Corner - VoidZero: Vite Dev Server security update - TanStack: TanStack Start security update: CVE-2026-102989 - Zod: Security advisory: malicious npm package changes affecting zod, nub, and standard-schema - Socket: New GhostAction Wave Hits Hundreds of Repos, Expanding Beyond CI/CD Secrets to Cloud Credentials - Other news - MIT News: Margaret Hamilton, computing pioneer, dies **Library Watch** - Maligator: JS AOT to C compiler (GitHub) - fjson from Cinnamon: friendly JSON parser for TypeScript - LogTape: LogTape 2.4.0 - Plumeria: type-safe CSS with a Rust compiler **From the Community** - VoidZero: ViteConf is October 15th - Syntax.fm: Syntax is donating - GitHub: Switches from CSS-in-JS - Mark Malstrom: Bento, a JS runtime in a weekend - Sam Boyer: Grafana's schema-driven data language: Cuetsy and Thema (via Evangaline Rome) - Bleet of the Week: “Cloudflare” Meteor **Cool Links** - Artificial Intelligence in the Firm: Bottlenecks in Software Production - TypeScript to Zod Schema - ASCII Rest **Music** Seahorse Dreams by Kubbi (Spotify)