express-async-errors

Simplify Express error handling by automatically passing thrown errors to `next()`.

express-async-errors

Express

Simplify Express error handling by automatically passing thrown errors to `next()`.

npm GitHub Docs

Fit

Bundle (gzip)

453 B

822 B raw

Install size includes transitive dependencies. Bundle size is gzipped browser payload.

Freshness

The Problem

In Express, async route handlers and middleware must manually catch and forward errors to next(). Without this, thrown exceptions are silently lost or crash the app instead of hitting the error handler.

What It Does

express-async-errors monkey-patches Express so thrown or rejected promises in async functions automatically propagate to your error-handling middleware, eliminating boilerplate try/catch blocks in every route.

Installation

bash

npm install express-async-errors

Usage Example

import "express-async-errors";
import express from "express";

const app = express();

app.get("/", async (req, res) => {
  throw new Error("Something went wrong");
});

app.use((err, req, res, next) => {
  res.status(500).send(err.message);
});

app.listen(3000);

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