So you catch it and pass undefined to your chapter handler function? It will surely blow up. In production code I'm using `.catch(log.rescueError(msg, returnVa

So you catch it and pass undefined to your chapter handler function? It will surely blow up. In production code I'm using `.catch(log.rescueError(msg, returnValue))` helper function (or .rescueWarn) - which is very helpful. It'll log error of that severity and return what I'm providing in case of exception.