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.Sponsored by Excalibur.jsExcalibur.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.comMake Your First Game in 10 MinutesJoin the Discord: https://discord.gg/9UemP985UyChapters(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 NewsAstro: 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 CornerStage 4: Explicit resource managementStage 4: Atomics.pause Stage 4: Iterator methodsSecurity: Malicious Postinstall Hook Found Across 700+ GitHub Repositories, Including Packagist and Node.js Projects Library Watchreplacements.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 Community2ality: Going offline for awhile (Buy Dr. Axel's books!)Jovi de Croock: <a href="https: