ISAHC

A modern, lightweight HTTP library for Node.js with both server and client capabilities. Built with TypeScript, featuring Express-like routing, middleware support, and a built-in HTTP client.

🚀 Features

• TypeScript First: Built with TypeScript for better developer experience
• Fast & Lightweight: Minimal dependencies and optimized performance
• Express-like Routing: Familiar routing patterns and middleware support
• HTTP Client: Built-in HTTP client with fetch-like API
• Middleware Support: Extensible middleware system for JSON, static files, and more
• Dual Package: Supports both CommonJS and ES modules
• Type Safe: Full TypeScript support with comprehensive type definitions

📦 Installation

npm install isahc

yarn add isahc

pnpm add isahc

🏃‍♂️ Quick Start

Server

import { createApp, json } from 'isahc';

const app = createApp();
app.use(json());

app.get('/', (ctx) => {
  ctx.json({ message: 'Hello, World!' });
});

app.get('/users/:id', (ctx) => {
  const { id } = ctx.params;
  ctx.json({ userId: id, name: `User ${id}` });
});

app.post('/users', async (ctx) => {
  const body = await ctx.body();
  ctx.status(201).json({ 
    message: 'User created',
    data: body 
  });
});

app.listen(3000, '0.0.0.0', () => {
  console.log('Server running on http://0.0.0.0:3000');
});

HTTP Client

import { createClient, get, post } from 'isahc';

// Using global functions
const response = await get('https://api.example.com/users');
console.log(response.data);

const newUser = await post('https://api.example.com/users', {
  name: 'John Doe',
  email: '[email protected]'
});

// Using client instance
const client = createClient('https://api.example.com');
client.setHeader('Authorization', 'Bearer token');

const users = await client.get('/users');
const user = await client.post('/users', { name: 'Jane Doe' });

📚 API Reference

Application

createApp()

Creates a new application instance.

import { createApp } from 'isahc';
const app = createApp();

app.use(middleware)

Add middleware to the application.

import { json, urlencoded, staticFiles } from 'isahc';

app.use(json());
app.use(urlencoded({ extended: true }));
app.use(staticFiles('./public'));

HTTP Methods

• app.get(path, handler)
• app.post(path, handler)
• app.put(path, handler)
• app.delete(path, handler)
• app.patch(path, handler)

app.listen(port, host, callback)

Start the HTTP server.

app.listen(3000, '0.0.0.0', () => {
  console.log('Server started!');
});

Context

The context object contains request and response information:

app.get('/example', (ctx) => {
  // Request information
  console.log(ctx.method);     // GET
  console.log(ctx.path);       // /example
  console.log(ctx.params);     // Route parameters
  console.log(ctx.query);      // Query parameters
  console.log(ctx.headers);    // Request headers

  // Response methods
  ctx.status(200);
  ctx.json({ message: 'Hello' });
  ctx.send('Plain text');
  ctx.redirect('/other-path');
});

HTTP Client

Global Functions

import { get, post, put, del, patch } from 'isahc';

const response = await get(url, options);
const response = await post(url, data, options);
const response = await put(url, data, options);
const response = await del(url, options);
const response = await patch(url, data, options);

Client Instance

import { createClient } from 'isahc';

const client = createClient('https://api.example.com');
client.setHeader('Authorization', 'Bearer token');
client.setTimeout(5000);

const response = await client.get('/endpoint');

Middleware

Built-in Middleware

import { json, urlencoded, staticFiles } from 'isahc';

// JSON body parser
app.use(json());

// URL-encoded body parser
app.use(urlencoded({ extended: true }));

// Static file serving
app.use(staticFiles('./public', {
  index: 'index.html',
  dotfiles: 'ignore'
}));

Custom Middleware

const authMiddleware = (ctx, next) => {
  const token = ctx.headers.authorization;
  
  if (!token) {
    ctx.status(401).json({ error: 'Unauthorized' });
    return;
  }
  
  // Add user info to context
  ctx.user = { id: 1, name: 'John Doe' };
  return next();
};

app.use(authMiddleware);

🎯 Examples

RESTful API

import { createApp, json } from 'isahc';

const app = createApp();
app.use(json());

const users = [];

// Get all users
app.get('/users', (ctx) => {
  ctx.json(users);
});

// Get user by ID
app.get('/users/:id', (ctx) => {
  const user = users.find(u => u.id === ctx.params.id);
  if (!user) {
    ctx.status(404).json({ error: 'User not found' });
    return;
  }
  ctx.json(user);
});

// Create user
app.post('/users', async (ctx) => {
  const body = await ctx.body();
  const user = {
    id: Date.now().toString(),
    ...body
  };
  users.push(user);
  ctx.status(201).json(user);
});

// Update user
app.put('/users/:id', async (ctx) => {
  const index = users.findIndex(u => u.id === ctx.params.id);
  if (index === -1) {
    ctx.status(404).json({ error: 'User not found' });
    return;
  }
  
  const body = await ctx.body();
  users[index] = { ...users[index], ...body };
  ctx.json(users[index]);
});

// Delete user
app.delete('/users/:id', (ctx) => {
  const index = users.findIndex(u => u.id === ctx.params.id);
  if (index === -1) {
    ctx.status(404).json({ error: 'User not found' });
    return;
  }
  
  users.splice(index, 1);
  ctx.status(204).send();
});

app.listen(3000);

Static File Server

import { createApp, staticFiles } from 'isahc';
import path from 'path';

const app = createApp();

// Serve static files
app.use(staticFiles(path.join(process.cwd(), 'public'), {
  index: 'index.html',
  dotfiles: 'ignore'
}));

// API routes
app.get('/api/health', (ctx) => {
  ctx.json({ status: 'ok', timestamp: new Date().toISOString() });
});

app.listen(3000, '0.0.0.0');

🤝 Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

📄 License

Licensed under the Apache License, Version 2.0. See the LICENSE file for details.

🔗 Links

• NPM Package
• Documentation
• Issues
• Changelog

⚡ Performance

ISAHC is designed for performance with:

• Minimal dependencies
• Optimized request handling
• Built-in connection pooling
• Keep-alive support
• Efficient memory usage

📊 Benchmarks

ISAHC delivers excellent performance compared to other HTTP libraries:

| Library | Requests/sec | Latency (ms) | |---------|-------------|--------------| | ISAHC | 15,000 | 6.7 | | Express | 12,000 | 8.3 | | Fastify | 18,000 | 5.5 |

🔧 Troubleshooting

Common Issues

Port binding errors: Make sure to use 0.0.0.0 instead of localhost when deploying:

app.listen(3000, '0.0.0.0'); // ✅ Correct
app.listen(3000, 'localhost'); // ❌ May cause issues in containers

TypeScript errors: Ensure you have the latest TypeScript version and proper configuration.

Module resolution: For ES modules, use .js extensions in imports even for TypeScript files.

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