Anthropic's Bet on Bun, React2Shell, Vite 8 Beta, and Elves Spam npm | News | Ep 47
TypeScript.fm - The Friendly Show for TypeScript Developers
npm 'Elf' Spam Malicious Packages
Erik covers the surge of auto-generated holiday 'elf-stats' npm packages that exfiltrate files and why to avoid them.
News for the week of December 1, 2025: Anthrophic acquired Bun, React2Shell is pretty darn bad (and that's not all), plus "elf spam" packages on npm. From the community: tRPC vs. oRPC, demystifying TSConfig, and hash-slash (#/) project-relative import support in Node.
MCP in Practice Course
Watch now. Kamran shows you how to build a practical enterprise-grade MCP server with .NET, C#, and OAuth, hosted remotely on Azure. (Requires subscription)
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- Homepage and Docs: https://excaliburjs.com
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- Join the Discord: https://discord.gg/9UemP985Uy
Chapters
- (00:00) - Welcome to the Show
- (04:09) - Kamran's MCP in Practice Course is Now Live on Pluralsight
- (08:35) - News: Anthropic Acquires the Bun JavaScript Runtime
- (13:41) - News: Vite 8 Beta with Rolldown
- (15:40) - News: tsdown 0.17 Release
- (17:10) - News: oxlint Brings Type-aware Linting in Alpha
- (17:50) - News: oxfmt Alpha is 30X Faster Than Prettier
- (18:45) - News: Gird Your Loins for Upcoming Node.js Security Releases
- (19:38) - News: React2Shell Remote Code Execution Exploit in RSC
- (26:55) - News: React2Shell Causes Yet Another Cloudflare Outage
- (28:16) - News: Santa's Elves Flood npm With Naughty "Gifts"
- (30:10) - News: SVG Clickjacking Exploit Using Filters
- (32:05) - Community Highlight: tRPC vs. oRPC for Your Next TypeScript Project?
- (33:15) - Community Highlight: Testing Vue Composables in TypeScript by John Franey
- (34:03) - Community Highlight: Formisch for React Quietly Released by Fabian Hillar
- (34:53) - Community Highlight: Building a Dinosaur Runner Game in Deno
- (36:19) - Community Highlight: Node Will Soon Support Project Root Import Paths
- (37:51) - Community Highlight: TSConfig Grimoire by Bjorn Lu
- (39:01) - Community Highlight: How is ESM vs. CJS Going? by Titus
- (40:45) - Community Highlight: Next Astro Release Supports Vite Environments API
- (41:18) - Bleet of the Week by Joke Bailey
- (42:10) - Cool Read: Godot Shaders Bible by Fabrizio Espendola
- (42:56) - Cool Watch: Cancellation Tokens by Stephen Toub
- (43:44) - Cool Game: Classic Game Zork is Released as Open Source
- (44:16) - Cool Tool: Helion, a Modern DOOM Engine
- (45:18) - Cool Watch: Modern .NET Serialization Attacks by Hampton Paulk
- (47:25) - Cool Reads: Architecture for Flow and Domain-driven Transformation
- (48:40) - The Minnesota Long Goodbye
News
- Bun: Bun is joining Anthropic
- ViteLand: Vite 8 Beta: The Rolldown-powered Vite
- ViteLand: Announcing Oxlint Type-Aware Linting Alpha
- ViteLand: The first Oxfmt alpha was released
- ViteLand: tsdown got a new release
- Node.js PSA: Prepare for Monday, December 15, 2025 Security Releases
- Cloudflare: Cloudflare outage on December 5, 2025
- Security: npm Sees Surge of Auto-Generated “elf-stats” Packages Published Every Two Minutes via (Sarah Gooding)
- Security: SVG Filters - Clickjacking 2.0 Ʊ lyra's epic blog
React2Shell Resources
- React2Shell Exploit: Critical Security Vulnerability in React Server Components
- Deep Dive: https://react2shell.com/
- Next.js: Security Advisory: CVE-2025-66478
- Deno Blog: React Server Functions / Next.js Vulnerability: Deno Deploy users protected
- Explainer: this is the worst case scenario by LowLevelEd
From the Community
- Temitope Oyedele: tRPC vs oRPC: Which is better for your next TypeScript project, and why?
- John Franey: How to test a Vue composable with TypeScript · JohnFraney.ca
- Fabian Hiller: Formisch for React just released (quietly) – the form library that powers SolidJS
- Deno: Build a browser game in Deno
- Hybrist: Node support for #/ wildcard (via Rob Palmer)
- Bjorn Lu: TSConfig Grimoire (via Rob Palmer)
- Wooorm: How is ESM from Common going?
- Astro: Next release of Astro will support Vite Environment API
Cool Links
- Cool Read: Godot Shaders Bible and Ghastly in Desmos by Fabrizio Espindola
- Cool Watch: Cancellation Tokens with Stephen Toub
- Cool Game: Preserving code that shaped generations: Zork I, II, and III go Open Source
- Cool Tool: Helion Engine, a modern DOOM engine in C#
- Cool Watch: Modern .NET Serialization Attacks by Hampton Paulk
- Cool Reads: Architecture for Flow and Domain-driven Transformation
Music
Seahorse Dreams by Kubbi (Spotify)
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