Astro 6.4, Rust's Restriction on LLMs, and Why tsgo Uses So Much Memory | News | Ep 69

News for the week of May 25, 2026: Astro's new Markdown processor API, Rust's take on LLM authorship, and new stage 4 TC39 proposals. From the community: highlights.

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Chapters

• (00:00) - Welcome to the Show
• (03:32) - News: Astro 6.4 Has a New Markdown Processor API
• (06:16) - News: What's New in Svelte, June 2026
• (07:01) - News: Rust Moves to Restrict LLM Use for rust/lang
• (13:25) - News: Porffor.dev is Now Served From a Native TS Binary
• (14:45) - News: Several ECMAScript Proposals Moving to Stage 4
• (18:10) - Security: Malicious Postinstall Hooks Found in 700+ GH Repositories
• (20:22) - Library Watch: Replacements.fyi Helps Find Replacement Libraries
• (21:52) - Library Watch: Sandcastle Helps You Sandbox Local Coding Agents
• (23:30) - Library Watch: rspack Now Has Better Cross-module Tree-shaking
• (25:42) - Library Watch: Thales Compiles TypeScript to Lean 4 Proof Language
• (27:03) - Community: 2ality Going Offline for Awhile
• (28:46) - Community: Hardening npm Publishing by Jovi de Croock
• (33:51) - Community: Why Does tsgo Use So Much Memory?
• (35:38) - Community: Fixing TS Perf Problems, a Case Study by Viget
• (36:33) - Community: Rust-Inspired TypeScript by Rijk van Zanten
• (37:22) - Community: Speeding Up the JavaScript Ecosystem with oxlint and oxfmt by Marvin Hagemeister
• (38:40) - Community: Is AI Causing a Repeat of Frontend's Lost Decade? by Mauro Bieg
• (41:14) - Community: 4 Component Scoped CSS Techniques by Mauro Bieg
• (43:28) - Building Type-Safe APIs with Hano
• (44:00) - Community: Using Effect.ts in OpenCode by Dax Raad
• (44:30) - Community: Tip on Object.assign Typing vs. Runtime Behavior
• (45:46) - Bleet of the Week
• (47:08) - Cool Link: Building OpenCode with Dax Raad
• (49:28) - Cool Link: Mina the Hollower
• (50:22) - The Minnesota Long Goodbye

News

• Astro: Astro 6.4 
• Svelte: What’s new in Svelte: June 2026 
• Socket: Rust Moves to Restrict LLM Use in Contributions After Months of Internal Debate 
• Porffor: porffor.dev is now served from a TS native binary 
• ECMAScript Corner
  • Stage 4: Explicit resource management
  • Stage 4: Atomics.pause 
  • Stage 4: Iterator methods
• Security: Malicious Postinstall Hook Found Across 700+ GitHub Repositories, Including Packagist and Node.js Projects 

Library Watch

• replacements.fyi helps you find safer npm package alternatives (via Inautilo) 
• Sandcastle sandboxes your coding agents (Matt Pocock)
• Rspack gets smarter about cross-module tree shaking 
• Thales is a TypeScript Compiler for the Lean proof language (via jessealama)

From the Community

• 2ality: Going offline for awhile (Buy Dr. Axel's books!)
• Jovi de Croock: Secure npm publishing
• Zack Overflow: Why does tsgo use so much memory? 
• Viget: Fixing TypeScript Performance Problems: A Case Study
• Rijk van Zanten: Rust-Inspired Typescript 
• Marbin Hagemeister: Speeding up the JavaScript ecosystem - oxlint and oxfmt 
• Mastro: Is AI causing a repeat of Frontend’s Lost Decade?
• Mastro: Four ways to do component-scoped CSS without a complex build step  
• Web Dev Simplified: How To Build A Production Ready API - Auth, JWT, API Keys
• Dax Raad: Effect at OpenCode | Dax Raad | Effect Miami 🇺🇸 2026 
• JP: Object.assign’s type annotation doesn’t match runtime behavior
• Bleet of the week

Cool Links

• Erik:  Building OpenCode with Dax Raad 
• Kamran: Mina the Hollower

Music
Seahorse Dreams by Kubbi (Spotify)