question: Custom error handler readme details

Hi, thanks for this package! I’ve been trying to add a custom error handler following the readme guide:

app.use(function (err, req, res, next) {
  if (err.name === 'UnauthorizedError') {
    res.status(401).send('invalid token...');
  }
});

I noticed that I was only able to make it work after adding this middleware after my routes. Maybe this should be mentioned in the readme? Or perhaps I’m missing something here about the usage. Here’s how my main file looks like:

// imports
...
const app = express();

// middlewares
app.use(cors());
app.use(morgan('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

// routes
app.use('/', something);
app.use('/else', else);
...

// where I add the custom handler
app.use((err, req, res) => {
	if (err.name === 'UnauthorizedError') {
		res.status(401).json({ message: 'Unauthorized. Invalid token!' });
	}
});

app.listen(8000, () => {
	console.log('Node middleware listening on port 8000!');
});

[divyanshu013]

Agreed it can’t be a full express tutorial, (and neither is the issue about it to be one) but just a line mentioning add this after your routes and other app.use(...) calls would be helpful.

[ibc]

This is a Express core concept. The README of this library (express-jwt) cannot be a full Express tutorial:

http://expressjs.com/en/guide/error-handling.html