Deno Deploy Makeover, Vitest 4, Nuxt 4.2, and Next.js 16 (Oh, and React Native 0.82) | News | Ep 41

TypeScript.fm - The Friendly Show for TypeScript Developers

News for the week of October 20, 2025: Deno Deploy revamp, Vitest 4, Nuxt 4.2, and Next.js 16, all in a single week. From the community: 4 weird ways to cast in TypeScript (+2 to Arcana rolls), type-safe API clients, and the hottest JS REPL around.

Chapters

• (00:00) - Welcome to the Show
• (05:04) - News: Deno Deployed a Brand Spankin' New Deno Deploy
• (11:44) - News: Vitest 4 is Out and Browser Mode is Stable
• (14:54) - News: Nuxt 4.2 Brings Integrated TypeScript DX Plugins
• (18:55) - News: Next.js 16 Sets TurboPack As the Default
• (21:59) - News: React Native 0.82, New Architecture, Who Dis?
• (25:26) - News: Node.js LTS 22 Has Better HTTP Proxy Handling
• (27:05) - News: AshTypeScript 0.6.0
• (28:00) - News: Heroic PR to DefinitelyTyped Updates 1,839 Files
• (29:23) - PSA: Critical Account Takeover Vulnerability in Better-Auth
• (32:37) - Community Highlight: Maybe Don't Use Top-level Await Yet
• (33:36) - Community Highlight: You Don't Need the Dependency
• (33:59) - Community Highlight: react-window Fixes a TypeScript Issue for React 18
• (34:29) - Community Highlight: 4 Unconventional Ways to Cast in TypeScript
• (35:15) - Community Highlight: How to Create Type-safe API Clients
• (35:50) - Community Highlight: Build a TypeScript MCP Server with Auth, DB, and Billing
• (36:41) - Community Highlight: A JS REPL... with Types!
• (37:49) - Community Highlight: Transforming Your OLTP ORM into a Type-safe OLTP Data Model
• (38:42) - Library Watch: FTA, Fast TypeScript Analyzer
• (39:09) - Community Highlight: Bleet of the Week

News

• Deno: My highlights from the new Deno Deploy
• Vitest 4.0 is out!
• Nuxt 4.2 is out!
• Next.js 16 is out!
• React Native 0.82 - A New Era (h/t TheNewStack)
• Node 22.21 LTS features native HTTP proxy support
• AshTypeScript 0.6.0 (bsky summary)
• A heroic update to DefinitelyTyped to prepare for TypeScript 6
• PSA: Critical Account Takeover in better-auth

From the Community

• Jake Archibald: PSA, don’t use top-level await right now in browsers
• Brian Muenzenmeyer: You Don’t Need a Dependency talk from JSConf is now live
• Brian Vaughn: react-window got a small TS compatibility fix for React 18-18.2
• Wolf Girl: 4 Unconventional Ways to Cast In TypeScript
• Matteo Collina: From curl Commands to Type-Safe API Clients: A Complete Workflow
• Shola Jegede: How to Build a To-Do List MCP Server Using TypeScript – with Auth, Database, and Billing
• Ge Gao: JS REPL with Types! (h/t Reddit)
• Moosestack (FiveOneFour): Just OLAP It: Transform Your OLTP ORM into a Type-Safe OLAP Data Model
• Library Watch: FTA Fast TypeScript Analyzer
• Bleet of the Week: “Anyone who writes bare JavaScript in 2025… is a maniac you shouldn’t trust”

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• Homepage and Docs: https://excaliburjs.com
• Make Your First Game in 10 Minutes
• Join the Discord: https://discord.gg/9UemP985Uy

Music
Seahorse Dreams by Kubbi (Spotify)