error handling in node js

1FactoryController.prototype.create = function (callback) {
2    //The throw is working, and the exception is returned.
3    throw new Error('An error occurred'); //outside callback 
4    try {
5        this.check(function (check_result) {
6            callback(check_result);
7        });
8    } catch (ex) {
9        throw new Error(ex.toString());
10    }
11}
12
13FactoryController.prototype.create = function (callback) {
14    try {
15        this.check(function (check_result) {
16            //The throw is not working on this case to return the exception to the caller(parent)
17            throw new Error('An error occurred'); //inside callback 
18        });
19    } catch (ex) {
20        throw new Error(ex.toString());
21    }
22}

1app.get('/', function (req, res, next) {
2  Promise.resolve().then(function () {
3    throw new Error('BROKEN')
4  }).catch(next) // Errors will be passed to Express.
5})
6