JavaScript runtimes aren’t just multiplying—they’re splintering. Big engines like V8, JavaScriptCore, QuickJS, Hermes, and SpiderMonkey now sit at the core of purpose-built runtimes everywhere: cloud, edge, mobile, IoT, even smart TVs.
Platforms like Cloudflare Workers, Deno Deploy, Bun, LLRT, and NativeScript are fully rethinking what a runtime looks like. They’re wiring in Node-API or other engine-agnostic bindings to squeeze out better performance, cleaner interop, and deeper access to native layers.
System shift: The Node.js + V8 era is fading. JavaScript is moving toward a modular, many-engine world—faster, leaner, and sharply tailored.
