Brahma-JS: Ultra-Low Latency JS Runtime Powered by Rust

August 20, 2025

This content originally appeared on DEV Community and was authored by Shayam Murali

Brahma-JS: Ultra-Low Latency JS Runtime Powered by Rust

Rust is amazing for speed, safety, and stability—but let’s be real: most JS/TS devs don’t want to wrangle the borrow checker, strict type system, and ownership rules just to build web APIs.

That’s why I built Brahma-JS — an ultra-low latency runtime written in Rust on top of Tokio + Hyper, but plug-and-play with Node, Deno, and Bun.

What it does

All heavy lifting (req.body, headers, query parsing, etc.) runs in Rust.
Works directly inside your existing JS ecosystem (Node, Deno, Bun).
Fire-and-forget, fully sync-style architecture.
Lets you write type-safe, memory-safe, blazing-fast HTTP routes with the simplicity of JS.

Example with installation

npm i brahma-firelight

const { useBrahma, startServer, redirect } = require("brahma-firelight");

useBrahma((req) => {
  if (req.path === "/hi") {
    return {
      headers: { "Content-Type": "application/json" },
      status: 200,
      body: JSON.stringify({ message: "Hello World from Brahma-JS!" }),
    };
  }

  if (req.path === "/bye") {
    return redirect("https://example.com");
  }

  return {
    status: 404,
    body: "Route not found",
  };
});

const port = process.env.PORT || 3000;
const host = process.env.HOST || "0.0.0.0";

startServer(host, +port).then(() => {
  console.log(`🌀 Brahma-JS server running at http://${host}:${port}`);
});