JAVASCRIPT

Cloudflare's JavaScript-native RPC on Workers now works across languages: TypeScript Workers can call methods on Python Workers and vice versa, with live objects, functions, and streams crossing the boundary. Pyodide's FFI handles type conversion, so no schemas, no protobuf, and no serialization code are needed. Available now.

Octane is a new MIT-licensed UI framework from Inferno's creator that compiles React-style hooks, Suspense, and actions to direct DOM code. No virtual DOM, no rules of hooks, no hand-maintained dependency arrays. Here is what shipped, the benchmark grid, and what it means for teams and AI agents.

A solo developer built a complete JavaScript ecosystem from scratch - runtime, engine, package manager, and Electron alternative. Here's what HN thinks.

The Bun runtime completed an AI-assisted rewrite from Zig to Rust, fixing memory safety issues and improving performance. Here is what HN thinks and why it matters for LLM-assisted code migration.

Deno 2.9 ships a desktop app framework that compiles TypeScript projects into native binaries with WebView or bundled Chromium - a new Electron alternative from the Deno team.

All-in-one JavaScript runtime, bundler, test runner, and package manager. Written in Zig, drop-in compatible with Node, dramatically faster install and start times.

The original server-side JavaScript runtime. V8 under the hood, npm ecosystem, and the default backend runtime for most production deployments.

Secure-by-default JavaScript and TypeScript runtime from Node's original creator. Built-in TypeScript, fmt, lint, test, and Deno Deploy for edge hosting.

Fast Rust-based formatter and linter for JavaScript and TypeScript. One tool replaces Prettier and ESLint with sub-second runs on large repos.

The standard JavaScript and TypeScript linter. Massive plugin ecosystem, framework-specific configs, and integration with every editor.

Vercel's high-performance monorepo build system. Remote caching, task pipelines, and incremental builds. Drop into any pnpm or npm workspace.

Fast, disk-efficient package manager. Content-addressable global store, strict dependency resolution, first-class workspaces. Default for many TypeScript monorepos.

The default JavaScript package manager. Ships with Node, hosts the largest software registry in the world, and remains the safest compatibility default.

The long-standing JavaScript test framework from Meta. Snapshots, mocks, parallelism, and the broadest plugin ecosystem in the JS testing world.