express-handler-async

Express Handler Async

Overview

• Middleware designed to manage exceptions within asynchronous Express routes, forwarding them to your Express error handlers.

Features

• Automatically catches exceptions thrown by asynchronous Express routes.
• Forwards exceptions to your Express error handlers.
• Supports both synchronous and asynchronous error handlers.
• Supports both Express 4.x and 5.x.
• Lightweight and easy to use.
• No dependencies.
• Written in TypeScript.
• Fully typed.
• Open-source.

Installation

npm install express-handler-async

Usage

• Import the asyncHandler function from the express-handler-async package.
• Wrap your asynchronous Express route handlers with the asyncHandler function.
• The asyncHandler function will automatically catch exceptions thrown by your asynchronous route handlers and forward them to your Express error handlers.

import asyncHandler from 'express-handler-async';

// express route example
app.get('/example', asyncHandler(async (req, res) => {
    const result = await someAsyncFunction();
    res.json(result);
}));

// without asyncHandler
app.get('/example', async (req, res, next) => {
    try {
        const result = await someAsyncFunction();
        res.json(result);
    } catch (error) {
        next(error);
    }
});