h3

To build a fast HTTP server, use a lightweight, composable core to define routes, apply middleware, and return responses with minimal boilerplate. This approach reduces setup time while maintaining predictable API behavior across different JavaScript runtimes.

Yes, this HTTP server framework works with Node.js, Deno, and Bun. It provides a runtime-agnostic foundation with adapters, allowing you to compose routes and middleware across multiple JavaScript environments without changing your core application logic.

You compose routes and middleware by creating an app instance and defining event handlers. This minimal API surface lets you rapidly prototype microservices, mapping HTTP requests to specific handlers and applying composable utilities for flexible responses.

The best way to prototype microservices with a small bundle size is using a tiny, composable core. It provides predictable behavior and minimal API surface, ensuring your HTTP server remains lightweight while rapidly composing API endpoints.

No, this lightweight web framework does not require external dependencies. It exposes an H3 class and event handlers natively, providing a minimal runtime-agnostic foundation to build HTTP servers without additional package installations.

Choose a tiny core HTTP server to reduce boilerplate and ensure small bundle sizes. Unlike heavier web frameworks, its minimal API surface and composable utilities provide a lightweight foundation for building APIs with predictable behavior across runtimes.