Ryan Dahl: 'Why reimplement Node? It works.'

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Plus Bun's new built-in type checker, Partytown 1.0, and an obscure way to call functions without parentheses.

#​806 — October 13, 2026

Read on the Web
Together with  agentfield.ai

JavaScript Weekly

Deno is Joining Cloudflare (But…) — Maybe David Bushell saw the writing on the wall, as the Deno team isn't joining Cloudflare to keep working on Deno, but to fold celld into workerd so Durable Objects can be self-hosted (more on that here). The Deno runtime will get a final year of official fixes, Deno Deploy closes in six months, and JSR moves to Cloudflare's infrastructure.

Ryan Dahl

💡 On Hacker News, Ryan Dahl noted that Deno "has been sucked into the gravity well of Node compatibility" before asking: "Why reimplement Node? It works." But what happens to the JavaScript™ trademark case, I wonder…?

CodeAF: #1 of Ten Coding Harnesses on DeepSWE — Ten coding harnesses ran the same open model on 113 real GitHub issues. CodeAF solved the most and paid the least per solved issue: 3.4x less than Claude Code, 4.8x less than OpenCode. A new open-source coding harness built for open models.

AgentField AI sponsor

Bun 1.4.3 Adds bun check, a Built-In TypeScript Type Checker — bun check is a port of TypeScript 7's checker that reads your tsconfig.json, reports the same errors as tsc and, Jarred claims, runs 3-6x faster. It plugs into bun run/test/build too. Idle server processes now use far less CPU, and a JavaScriptCore upgrade picks up numerous perf gains.

Jarred Sumner

IN BRIEF:

RELEASES:

  • Last second addition: TanStack Start 1.0 has just dropped. Big news for full-stack React and Solid fans! :-)

  • 🎉 Partytown 1.0 – A popular way to relocate third-party scripts to run in a Web Worker rather than on the main thread has left beta after five years in development.

  • Marionette 5.0 – Six years on, the Backbone-era framework returns with a core free of Backbone, jQuery and Underscore… and they explain why!

  • Bootstrap 6 Alpha – An early look at Bootstrap's first major release since 2021, leaning on modern CSS and making its JavaScript plugins ESM-only.

  • Express 5.3.0 – A maintenance release worth upgrading to, as patched qs, proxy-addr and body-parser dependencies close five CVEs.

📖  Articles and Videos

📊 WebSocket Servers in JavaScript: Node.js, Bun, and Deno — In 2023, Daniel found Bun much faster than Node at relaying WebSocket messages, but there was a bug in his Bun server. This new attempt uses a C client/relay as a baseline, and Node 26 now gets close to C latency, ahead of Bun and Deno.

Daniel Lemire

How Sindre Sorhus' Personal Site is Now Made in Swift — One of JavaScript's most prolific developers explains how he's dropped Astro and now builds his personal site with Swift, including the styling and markup, with broken links and style typos failing at compile time (source).

Sindre Sorhus

Too Many Agent Traces to Read? Find the Ones That Matter, Live Oct 14 — Bad answers, wrong tool calls, too many traces. See how Sentry engineers find the failures worth fixing. Register now.

Sentry sponsor

Tiny Apps with TinyJS — A quick look at a new way to make tiny JS-powered desktop apps we featured a few weeks ago.

Raymond Camden

📄 Yet Another Way to Invoke Functions Without Parentheses – There are many ways to invoke arbitrary functions in JavaScript without using parens, but this is a particularly obscure one! bartosz

📄 Six Months of Building with Remix 3 – What the post-React Remix (v3 was released earlier this month) is like to work with day to day. Sergio Xalambrí

📄 A Visual Notation for React's Parent and Owner Trees – With a playground that draws them from your code. Jules Blom

📄 How to Test an iframe's postMessage Handler Keshav Malik

🛠 Code & Tools

🤖 OpenCode 2.0: A Big Update for the Open Coding Agent — A full-featured agentic coding app, built on Bun, that's more akin to Claude Code than Pi, say. v2.0 overhauls it with background subagents, a 'code mode' to let models script MCP tool calls, and clients for vanilla JS and Effect code to drive it.

Anomaly / The OpenCode Team

💡 If you've not given OpenCode a try yet, you can get started here.

Tamagui 3: One React UI Codebase for Web and Native — A styling system and component kit for sharing UI between React web apps and React Native, with a compiler that keeps things fast on both. v3 adds Tailwind-style props and React Strict DOM support.

Nate Wienert

Mobile AI Infrastructure for Web Devs Who Code with Agents — Point the agent you use for the web at iOS and Android. Expo takes care of the native builds and the trip to the stores.

Expo sponsor

H3 v2: The UnJS HTTP Framework Rebuilt on Web Standards — The minimal HTTP framework behind Nitro and Nuxt's server layer is now stable in v2, a rewrite around standard Request and Response so the same app runs on Node, Bun, Deno, Workers, and even in the browser. Migration guide.

Pooya Parsa

Shaders: 190+ WebGPU Effect Components, Now Open Source — Ripples, glows, and dissolves into ASCII, composed as components rather than written as shader code, for React, Vue, Svelte, Solid, or plain JS. The engine, framework bindings, and the components themselves are now all MIT licensed.

Simon Le Marchant

💡 If you like this vibe, ascii.rest, which offers "236 animated ASCII pieces for web pages", is also worth a look.

  • Node.js v26.11.0 (Current) – Adds a --process-timeout flag to end a process after a set time, plus virtual table support in node:sqlite.

  • Hono 5.0 RC – The web-standards server framework goes ESM-only and moves its runtime adapters into separate packages.

  • 🔒 Handlebars 4.7.10 – The templating library fixes two critical JavaScript injection flaws affecting releases back to 3.0.

  • he 2.0 – Robust HTML entity encoder/decoder. First release in eight years, now ESM with named exports.

  • React Aria 1.22 – Adds a new Sheet component.

  • pnpm 12.12

📰 Classifieds

⚡️Add lightning-fast 1D/2D barcode scanning to your web app with STRICH. On-device processing, free trial and demo!

Durable AI agents built with the AI SDK you already use. Long-lived LLM sessions that survive deploys, crashes & refreshes. Test out chat.agent on Trigger.dev.

🎬 Your app needs video, not a video team. Upload any format to Hyperserve's API, get back MP4 on a global CDN. Ship video in an afternoon.

📢  Elsewhere in the ecosystem

  • In Fingerprints are the New Cookies, Roy Fish demonstrates the various ways web pages can assign a unique(ish) identity to you using JavaScript.

  • 🤖 Theo Browne set AI agents loose on porting the TypeScript 7 compiler to Rust, and ts-rust is the (very experimental) result.

  • 📱 Following Shopify, Coinbase is moving its app off React Native, saying agents have made building each feature twice cheap enough to go fully native.

  • Fancy a retro robot voice in your web experience? Klattsch is a voice synthesizer you can use on the web or from Node.js as an npm package. Daiiisy, daiiisy…

  • Three years ago we mentioned Linus Groh's Zig-based Kiesel JavaScript engine. It passed 25% of test262 back then, but v0.4.0 has landed and it's now at 94.7% (not far behind V8) and supports modern language proposals like await dictionary and numerous iterator proposals.
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