Show HN: QuickBEAM – run JavaScript as supervised Erlang/OTP processes

QuickBEAM is an innovative project that embeds a JavaScript runtime directly within the Erlang/OTP VM. It aims to bridge the gap between JavaScript and BEAM by allowing JS code to run as first-class, supervised Erlang processes, enabling full-stack development without relying on Node.js.

• Core Concept: JavaScript runtimes operate as GenServers within OTP supervision trees, allowing them to call Elixir code, send/receive messages, and participate in BEAM's fault-tolerance model.
• Seamless Integration: Eliminates the JSON boundary between JS and Erlang, enabling direct data conversion between JS values and BEAM terms, and provides a Beam global object for deep interop.
• Web API Backing: Offers browser-style APIs (e.g., fetch, WebSocket, DOM) backed by native OTP/BEAM primitives and C libraries (like Lexbor for DOM), avoiding JS polyfills.
• Full-Stack Capabilities: Designed for use cases like Server-Side Rendering (SSR) with native DOM, sandboxed user code, per-connection state, and direct backend JS interaction with OTP.
• Robust Supervision & Sandboxing: JS runtimes are supervised and restartable. They can be configured with memory and reduction limits, offering strong isolation and resource control.
• TypeScript & NPM Support: Includes a built-in TypeScript toolchain via OXC Rust NIFs for direct .ts evaluation, transformation, minification, and bundling. It also features an integrated npm client for dependency management without Node.js.
• Performance & Scaling: Benchmarks show significant speed improvements over JSON-based interop. It offers different deployment strategies (individual runtimes, context pools) for various concurrency needs, emphasizing efficient resource usage for thousands of concurrent connections.
• Node.js Compatibility: Implements core Node.js APIs (e.g., fs, path, process, os) to ease migration and enable broader JS ecosystem compatibility.

QuickBEAM presents a compelling solution for developers looking to integrate JavaScript deeply and efficiently into the Erlang/Elixir ecosystem, offering a unique blend of fault tolerance, performance, and modern development tooling within the BEAM VM.