I have this code which throws an error from `concat` method:

```
request.on('end', function (chunk) {
    body = Buffer.concat(body).toString();
});

```

I wanted to be notified about the error so I added a listner:

```
request.on('error', function (error) {
    var e = error;
})

```

But it's not triggered. Why? How can I listen to it using `error` event without using `try/catch`?

This is not a question about why I get the error, this is the question how to catch it using `error` event