Bun.WebView, Cursor's Big Bet, and Whether Mythos Just Spells Marketing | News | Ep 63

News for the week of April 6, 2026: latest Bun release adds automated headless browser automation, whether Anthropic is using fear-based marketing, and major releases from Storybook and Docusaurus. From the community: why nominal typing deserves to be first-class, what to do about OSS vulnerabilities, and lessons from building a Rust runtime for TS.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 (04:41) - News: Bun 1.3.12 Introduces WebView and Markdown Renderer (06:52) - News: Does Claude Mythos Spell Doom or Is It Just Marketing? (10:06) - News: Cursor 3 is Betting That the IDE Will Be Dead (15:20) - News: Ember.js is Using Vite by Default Now (15:52) - News: SvelteKit, Now with TS 6 Support (16:02) - News: VoidZero Experiments with Making Angular Compiler Faster (18:05) - News: Docusaurus 3.10 Prepares for v4 Release (20:12) - News: Storybook 10.3, React MCP and Type-safe CSF Factories (21:03) - Library Watch: better-translate, Type-safe Internationalization (22:25) - Library Watch: tiny-tts, Offline CPU Text-to-Speech in Node.js (24:06) - Library Watch: Pagyra, HTML to PDF in TypeScript (25:35) - Library Watch: PayKit, a TypeScript Billing Framework (26:54) - Library Watch: tsnapi, Snapshot Your TS Library Surface (27:43) - Highlight: What's New in JavaScript 2026 by Frontend Masters (28:51) - Highlight: Parse, Don't Validate -- In A Language That Doesn't Want You To by Cekrem (33:16) - Highlight: Building a Rust Runtime for TypeScript by Encore (35:55) - Highlight: Weak Map Memory Leak Trap by Peter Kroner (37:57) - Highlight: TypeScript 6 and CSS Side Effect Imports by Schalk Neethling (40:30) - Highlight: Integrating TS Go and the Effect LSP (41:44) - Highlight: Moving Railway's Frontend Off Next.js (43:24) - Highlight: Prisma Next Makes MongoDB Type-safe (44:21) - Highlight: Just Keep Vulnerabilities Open by James Sumners (48:46) - Bleet of the Week (51:18) - Cool Video: Real-time Sand Simulation... in SQL (52:16) - Cool Video: Building a Programming Language from Scratch Using TypeScript (53:03) - Cool Language: Xena, Inspired by TypeScript (55:18) - Cool Read: Building a CLI for All of Cloudflare (57:21) - Cool Read: Cloudflare Sandboxes are Now GA (58:01) - The Minnesota Long Goodbye NewsBun 1.3.12Claude Mythos PreviewAnthropic's Red Team blog post goes into detailClaude Mythos is Actually Scary You Actually Do Need to Understand MythosThe New Stack: Cursor's $2 billion bet: The IDE is now a fallback, not the defaultEmber.js is using vite by default SvelteKit 2.56.0 has TS 6.0 supportVoidZero: How we made the Angular Compiler faster using AI Docusaurus 3.10Storybook 10.3 Library Watchbetter-translate: Type-safe i8n for any TypeScript projecttiny-tts: Zero-dependency CPU-only text-to-speech with ONNX modelpagrya-j