notFoundHandler

function notFoundHandler(req: Object, res: Object, next: function)

Sends a 404 response when no route matches the request.
See the official express package documentation for more details:

Returns: void

PARAMETER	TYPE	OPTIONAL	DEFAULT	DESCRIPTION
req	Object			Express request object.
res	Object			Express response object.
next	function			Express next function.

See:

• https://expressjs.com/en/guide/error-handling.html

const app = express();
app.use(notFoundHandler);