http-error-builder

A clean utility to generate custom HTTP errors (400, 401, 404, 500...) for your Express/Fastify APIs with stack trace and safe JSON output.

📦 Installation

npm install http-error-builder

✨ Features

• ✅ Custom error messages with status code
• ✅ Auto stack trace
• ✅ JSON-friendly .toJSON() for API responses
• ✅ Works in Express/Fastify/Middleware

---

🛠 Usage

const { createError } = require('http-error-builder');

app.get('/user/:id', (req, res, next) => {
  const user = null;
  if (!user) return next(createError(404, 'User not found'));
});

✅ Output

{
  "status": 404,
  "message": "User not found"
}

🎯 Use in Express Error Handler

app.use((err, req, res, next) => {
  if (err.status) {
    res.status(err.status).json(err.toJSON());
  } else {
    res.status(500).json({ message: 'Server error' });
  }
});

📚 API

createError(statusCode, message?)
statusCode — HTTP code (400, 401, 404, 500, etc.)
message — Optional custom message