JSter #252: Libraries and more

Here we JavaScript again.

I wrote a post about my conference themes so you have a better idea what to await from Future Frontend 2026 (8-9.6, Espoo, Finland).

Libraries

• sprusr/mewmap: Interactive maps powered by SVG 🐈
• supertalk - A type-safe, unified communication library for Web Workers, Iframes, and Node.js worker threads.
• jQuery 4.0.0
• A polyfill for the HTML switch element

Applications

• JSCAD - JavaScript CAD

Articles

• A 2x faster Rollup?
• The Incredible Overcomplexity of the Shadcn Radio Button
• The 2025 Web Almanac with new insights is available now

Books

• Free book - Accessibility For Everyone by Laura Kalbag
• The Micro-Frontend Architecture Handbook

Tutorials

• Build a dinosaur runner game with Deno, pt. 4

Runtimes

• Node.js 25.4.0

Security

• Denial of Service and Source Code Exposure in React Server Components Again
• CVEs affecting the Svelte ecosystem - Update as soon as you can
• Node.js — Mitigating Denial-of-Service Vulnerability from Unrecoverable Stack Space Exhaustion for React, Next.js, and APM Users

Tools

• blackboardsh/electrobun: Build ultra fast, tiny, and cross-platform desktop apps with Typescript.
• Fontra - The browser based font editor
• lloydi/PolyPane-Config - Useful polypane configurations for a11y testing
• kettanaito/playwright-persona: Authentication in Playwright using personas.

Demos

• Google Balls

News

• Astro is joining Cloudflare

Browsers

• Just the Browser

Techniques

• Replacing Toasts with Accessible User Feedback Patterns
• Date is out, Temporal is in
• Using your design system colors with contrast-color()
• Managing TypeScript Packages in Monorepos