Express-async-errors

Express-async-errors is a utility that allows you to handle asynchronous errors in Express applications.

Installation

You can install this package using npm:

npm install express-async-errors

Usage

To use express-async-errors, simply require it in your application and use it as middleware in your Express application.

const express = require('express');
const app = express();
const asyncErrors = require('express-async-errors');

// Use middleware to handle async errors
app.use(asyncErrors());

// Example of an async route handler
app.get('/', async (req, res, next) => {
  // Asynchronous code that could throw an error
  throw new Error('Something went wrong!');
});

// Error handler
app.use((err, req, res, next) => {
  console.error(err.stack);
  res.status(500).send('Internal Server Error');
});

How it works

express-async-errors wraps all route handlers and middleware functions in a try-catch block. If the function throws an error, the error is passed to the next middleware function in the stack. This allows you to write cleaner and more concise error handling code.

Benefits

Using express-async-errors in your Express application has several benefits:

• You can write cleaner and more concise error handling code.
• You don't need to add try-catch blocks to all of your route handlers and middleware functions.
• You can still use next to pass errors to the error middleware.

Conclusion

express-async-errors is a useful tool for handling asynchronous errors in Express applications. By using this package, you can simplify your error handling code and make your application more robust.