hono

What is hono?

Hono is a small, simple, and fast web framework for building web applications and APIs in Node.js. It is designed to be lightweight and efficient, making it suitable for high-performance applications.

What are hono's main functionalities?

Basic Routing

Hono allows you to define routes for your web application. In this example, a basic GET route is defined that responds with 'Hello, Hono!' when accessed.

const { Hono } = require('hono');
const app = new Hono();

app.get('/', (c) => c.text('Hello, Hono!'));

app.listen(3000);

Middleware Support

Hono supports middleware, allowing you to execute code before your route handlers. This example demonstrates a simple logger middleware that logs the request method and URL.

const { Hono } = require('hono');
const app = new Hono();

const logger = (c, next) => {
  console.log(`${c.req.method} ${c.req.url}`);
  return next();
};

app.use(logger);

app.get('/', (c) => c.text('Hello, Hono!'));

app.listen(3000);

Error Handling

Hono provides a way to handle errors globally. In this example, an error is thrown in the route handler, and the global error handler responds with a 500 status code and a message.

const { Hono } = require('hono');
const app = new Hono();

app.get('/', (c) => {
  throw new Error('Something went wrong!');
});

app.onError((err, c) => {
  c.status(500);
  return c.text('Internal Server Error');
});

app.listen(3000);

Other packages similar to hono

express

Express is a widely-used web framework for Node.js, known for its simplicity and flexibility. It offers a robust set of features for web and mobile applications, including routing, middleware support, and more. Compared to Hono, Express has a larger community and more extensive documentation, but Hono aims to be more lightweight and faster.

koa

Koa is a web framework designed by the team behind Express. It aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Koa uses async functions to help eliminate callback hell and improve error handling. Compared to Hono, Koa is more modern and has a different approach to middleware, using a stack-like structure.

fastify

Fastify is a web framework highly focused on providing the best developer experience with the least overhead and a powerful plugin architecture. It is designed for high performance and low overhead. Compared to Hono, Fastify is more feature-rich and has a more extensive ecosystem, but Hono aims to be simpler and more lightweight.

README

---

Documentation :point_right: hono.dev
v4 has been released! Migration guide

---

Hono - [炎] means flame🔥 in Japanese - is a small, simple, and ultrafast web framework for the Edges. It works on any JavaScript runtime: Cloudflare Workers, Fastly Compute, Deno, Bun, Vercel, AWS Lambda, Lambda@Edge, and Node.js.

Fast, but not only fast.

import { Hono } from 'hono'
const app = new Hono()

app.get('/', (c) => c.text('Hono!'))

export default app

Quick Start

npm create hono@latest

Features

• Ultrafast 🚀 - The router RegExpRouter is really fast. Not using linear loops. Fast.
• Lightweight 🪶 - The hono/tiny preset is under 13kB. Hono has zero dependencies and uses only the Web Standard API.
• Multi-runtime 🌍 - Works on Cloudflare Workers, Fastly Compute, Deno, Bun, AWS Lambda, Lambda@Edge, or Node.js. The same code runs on all platforms.
• Batteries Included 🔋 - Hono has built-in middleware, custom middleware, and third-party middleware. Batteries included.
• Delightful DX 😃 - Super clean APIs. First-class TypeScript support. Now, we've got "Types".

Benchmarks

Hono is the fastest, compared to other routers for Cloudflare Workers.

Hono x 510,171 ops/sec ±4.61% (82 runs sampled)
itty-router x 285,810 ops/sec ±4.13% (85 runs sampled)
sunder x 345,272 ops/sec ±4.46% (87 runs sampled)
worktop x 203,468 ops/sec ±3.03% (91 runs sampled)
Fastest is Hono
✨  Done in 28.68s.

Documentation

The documentation is available on hono.dev.

Migration

The migration guide is available on docs/MIGRATION.md.

Communication

Twitter and Discord channel are available.

Contributing

Contributions Welcome! You can contribute in the following ways.

• Create an Issue - Propose a new feature. Report a bug.
• Pull Request - Fix a bug and typo. Refactor the code.
• Create third-party middleware - Instruct below.
• Share - Share your thoughts on the Blog, Twitter, and others.
• Make your application - Please try to use Hono.

For more details, see docs/CONTRIBUTING.md.

Contributors

Thanks to all contributors!

Authors

Yusuke Wada https://github.com/yusukebe

RegExpRouter, SmartRouter, LinearRouter, and PatternRouter are created by Taku Amano https://github.com/usualoma

License

Distributed under the MIT License. See LICENSE for more information.