JavaScript Why is node.js/bluebird eating an exception? node js bluebird,node js bluebird promise example,node js

Deep within my promise stack, I make this call:

function isNameAvailable(name) {
    return registry.getName(name)
        .then(function(result) {
            return result ? false : true;
        });
}

Unfortunately, and this is a programming error, registry was undefined. My node.js application did not print any error message. Any ideas why? I am using the bluebird promise library.

Edit

Here's the calling code. I just added the catch, but it's not catching anything.

function _checkAvailability(name) {
    return isNameAvailable(name)
        .then(function(isAvailabile) {
            if (isAvailabile) {
                return true;
            }
            else {
                throw new NameNotAvailable('Name "' + name + '" is not available');
            }
        })
        .catch(function(error) {
            console.log('isNameAvailable threw', error);
            throw error;
        })
}

The stack should eventually roll back to the function that was called by express.js as a result of an HTTP request. That's one place where I am catching all errors and printing a stack trace (but obviously it is not printing anything):

function createUser(req, res) {
    userService.createUser(req.body)
        .then(function(user) {
            res.status(201).send(user);
        })
        .catch(function(error) {
            log.trace(error);
            res.status(500).send({'message': error.toString()});
        });
}
Answer:1

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