promises.md

You mean something like:

process.on("unhandledRejection", function(p, reason){
  console.log('Uncaught error: ', reason); // this will get called
});

Promise.resolve().then(x => { throw "Hah"; }); 

And similarly in browsers?

In RSVP by the way, you'd do:

RSVP.on('error', function(reason) {
  console.log("Uncaught Error", reason);
});

RSVPPromise.resolve().then(x => { throw "Hah"; });

Since you mentioned RSVP