Promises and generic .catch() statements

Question

I\'m writing an API for my system, that\'s sending an XHR to the server and returns a promise that should be handled by the caller - so far so good.

For each API cal

Answer 1

With bluebird Promises, you can call

Promise.onPossiblyUnhandledRejection(function(error){
    // Handle error here
    console.error(error);
});

With iojs you have the process.on('unhandledRejection') handler as specified here. (Also worth reading this and this

As far as I know, neither native Promises anywhere else nor Q Promises offer this functionality.