Creating Error Handler Middleware
Explore how to implement error handler middleware in Express to manage 404 Not Found and 500 Server Error responses. This lesson guides you through creating and integrating middleware to improve error handling in your Node.js backend.
What is error handler middleware in Express?
Error handler middleware helps catch errors that occur both synchronously and asynchronously during runtime.
The Express framework comes with several built-in error handlers by default. In this lesson, we’ll create two error handlers in the middleware folder of our project, which are as follows:
- The “Not Found” middleware
- The “Server Error” middleware
The “Not Found” middleware
We’ll create a new file in our ...