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June 3, 2026

JSter #256 - Libraries and more

May the source be with you.

Future Frontend 2026 takes place in a week! There will be a stream and recordings as well.

Libraries

  • fate 1.0 - a modern data client for React
  • Elena - Simple, tiny library for building Progressive Web Components
  • hybrids - a web framework with a functional declarative architecture
  • antfu/tsnapi - Library public API snapshot testing for runtime exports and type declarations
  • millionco/isolet: Package any component into a self-contained, isolated widget
  • Vue Data UI
  • heerich.js - A tiny engine for 3D voxel scenes rendered to SVG
  • getelena/elena: Elena is a simple, tiny library for building Progressive Web Components.

Frameworks

  • DaloyJS - The runtime-portable TypeScript framework with supply-chain-aware defaults
  • ilha - Build a modern frontend, your way

Tools

  • Speeding up the JavaScript ecosystem - oxlint and oxfmt
  • vercel-labs/wterm: A terminal emulator for the web
  • ReliCSS - Modern CSS Audits
  • kucherenko/jscpd: Copy/paste detector for programming source code
  • millionco/cli-to-js: Turn any CLI into a JavaScript API
  • yuku-toolchain/yuku: High-performance JavaScript/TypeScript compiler and toolchain in pure Zig 🦎
  • Dembrandt | Extract Design Systems & Tokens in Seconds

Articles

  • The Third Age of JavaScript
  • Projecting React
  • Next.js vs TanStack Start: Why Next.js Became Tech Debt for Spike
  • Polyfilling CSS with CSS Parser Extensions
  • Moving Railway's Frontend Off Next.js
  • vinext: One Week, One Engineer, $1,100 in Tokens

Techniques

  • React Server Components Your Way
  • How we use Abstract Syntax Trees (ASTs) to turn Workflows code into visual diagrams

Runtimes

  • rivet-dev/agent-os: A portable open-source operating system for agents. ~6 ms coldstarts, 32x cheaper than sandboxes. Powered by WebAssembly and V8 isolates.

Standards

  • Shared Dictionaries: compression that keeps up with the agentic web
  • WICG/html-in-canvas

Security

  • lirantal/npm-security-best-practices: Collection of npm package manager Security Best Practices

Demos

  • Fast and Gorgeous Erosion Filter
  • Mouse-Paint Eroded Mountains
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