Stackable errors

[yanickrochon]

Like message, and messageData are "special" properties, previousError should provide a way to stack errors for more detailed information. For example :

var CustomError1 = errorFactory('CustomError1');
var CustomError2 = errorFactory('CustomError2', [ 'message', 'previousError' ]);

var err = CustomError2("Example", CustomError1("Stacked error"));

console.log(err.stack);
// Error: Example
//    at ...
// Error: Stacked Error
//    at ...

Since the stacked error stack trace is invoked directly, this behaviour can be recursive.