Introduction to Jetpath

Write Once, Run Cross-runtime

Jetpath is a performance-first, cross-runtime API framework designed to eliminate boilerplate and cognitive overhead in API development.

What Makes Jetpath Special?

• Write Once, Run Cross-runtime: Your code runs seamlessly on Node.js, Deno, Bun, AWS Lambda, and Cloudflare Workers. No runtime lock-in.
• Zero-Router Magic: Create endpoints by simply writing functions. No route definitions, no configuration files.
• TypeScript First: Built with TypeScript from the ground up, giving you type safety with JavaScript flexibility.
• No Boring Parts: Convention-based routing, auto-generated API docs, and built-in validation mean you focus on features, not plumbing.

How It Works

Jetpath uses smart conventions and naming-based routing. Instead of writing route definitions, you just:

1. Create .jet.ts files in your src directory
2. Export functions with intuitive names like METHOD_path_segments
3. That's it.

For example, create src/users.jet.ts with:

import { type JetRoute } from "jetpath";

// This becomes GET /users
export const GET_users: JetRoute = (ctx) => {
  ctx.send({ message: "runs on any runtime!" });
};

The Best Parts

• Fast Development: No configuration files or complex setup. Write code and go.
• Automatic API Docs: Define validation schemas once, get interactive API documentation that stays in sync with your code.
• Type Safety: Full TypeScript support with generics for request body, params, query, and response types.
• Extensible: Extend Jetpath with plugins for auth, logging, file uploads, or anything else.
• Smart Conventions: Function naming conventions mean your code structure matches your API structure.
• Performance: Trie-based routing, context pooling, and minimal abstractions keep throughput high.

Jetpath is for:

• Startups: Rapidly iterate on your API while maintaining type safety
• Enterprise Teams: Build maintainable, scalable APIs that work across multiple runtimes
• Full-Stack Developers: A backend framework that matches the joy of frontend development
• Anyone Who Hates Boilerplate: Jetpath handles the boring stuff so you can focus on what matters

Ready to Get Started?

• Quick Start: Follow our Quick Start guide to build your first API in minutes
• Core Concepts: Explore Routing to understand how everything works together

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