ex-router

A lightweight and flexible file-based routing system for Express.js, Hono, Diesel, or any other framework.

🚀 Features

• Simple and easy-to-use routing system
• Automatic route loading from a directory
• Works seamlessly with Express.js, Hono, Diesel
• Supports defining multiple HTTP methods in a single route file

Note: Fastify requires a workaround using setTimeout (100-200ms) to prevent errors.

• Wrap loadRoutes func under setTimeout and give time from 100ms or more until it works.
• Or you can use fastify-autoload which is native fastify library

📦 Installation

Bun

bun install ex-router

NPM

npm install ex-router

🔥 Usage

Import loadRoutes and initialize it with your app:

import express from 'express';
import { loadRoutes } from 'ex-router';

const app = express();
const port = 3000;

// Load routes
loadRoutes(app, {
    routeDir: process.cwd() + '/src/routes',
    prefixUrl: ''
});

app.get('/', (_, res) => {
    res.send('Hello, world!');
});

app.listen(port, () => {
    console.log(`Server is running on port ${port}`);
});

📂 Folder Structure

Note: Ensure your server file is in the root directory and routes folder is under src/.

example/
├── src/
│   ├── controller/
│   ├── routes/
│   │   ├── auth/
│   │   │   ├── login.ts
│   │   │   ├── register.js
│   │   ├── user/
│   │   │   ├── profile/
│   │   │   │   ├── index.ts
│   │   │   │   ├── delete.ts
│   │   │   │   ├── videos.ts
│   ├── utils/
│   ├── server.ts // root

📝 API Reference

loadRoutes(app, options)

Parameters:

• app - The application instance.
• options.routeDir - The directory containing route files.
• options.prefixUrl (optional) - A prefix for all routes.

🔗 Example API Endpoints

Without Prefix (prefixUrl: '')

File Path                          | API Route
------------------------------------|-----------
src/routes/hello.ts                | /hello  
src/routes/auth/login.ts           | /auth/login  
src/routes/user/profile/index.ts   | /user/profile  
src/routes/user/profile/videos.ts  | /user/profile/videos  

With Prefix (prefixUrl: '/api/v1')

loadRoutes(app, {
    routeDir: process.cwd() + '/src/routes',
    prefixUrl: '/api/v1'
});

File Path                          | API Route
------------------------------------|-----------
src/routes/hello.ts                | /api/v1/hello  
src/routes/auth/login.ts           | /api/v1/auth/login  
src/routes/user/index.ts           | /api/v1/user  
src/routes/videos/api.ts           | /api/v1/videos  
src/routes/user/videos.ts          | /api/v1/user/videos  

🛠 Routing Rules

1. Folders act as route segments

   • Example: routes/user/profile.ts → /user/profile

2. index.ts or api.ts acts as the root

   • Example: routes/user/index.ts → /user
   • Example: routes/user/api.ts → /user
   • Example: routes/user/profile/index.ts → /user/profile
   • Example: routes/user/profile/api.ts → /user/profile

3. Multiple HTTP Methods in a Single File

   • Users can define multiple HTTP methods (GET, POST, PUT, DELETE, etc.) within the same route file.

Example

• src/routes/login.ts

export const GET = (req, res) => {
    return res.send("Hello from login GET request.");
};

export const POST = (req, res) => {
    const { username, password } = req.body;
    if (!username || !password) {
        return res.status(400).send("Username and password are required");
    }
    return res.send("Login successful");
};

💡 Why Use import?

This project is built with modern JavaScript standards. Use ES Modules (import statements) for better compatibility and maintainability.

⚡ Contributing

Contributions are welcome! Feel free to submit issues or pull requests.

📜 License

This project is licensed under the MIT License.