I reject your reality

happy-promises.js

/**
 * Running this file in Node (>4) will demonstrate that unhandled exceptions in promises will
 * cause the process to continue running in a happy way, logging all 3 numbers.
 * */
setTimeout(function () {
  console.log(3);
}, 100);

console.log(1);
new Promise(function () {
  throw new Error('boo');
});

Promise.reject('haha')
  .then(null, function () {
    throw new Error('maybe not');
  });

Promise.resolve('what?')
  .then(function () {
    throw new Error('nope');
  });
console.log(2);

omg-panic.js

/**
 * Running this file in Node (>4) will demonstrate that unhandled exceptions in non-Promise code
 * will cause the process to halt. Only logging "1".
 * */
setTimeout(function () {
  console.log(3);
}, 100);

console.log(1);
throw new Error('boo');
console.log(2);

promise-panic.js

/**
 * Running this file in Node(>4) will demonstrate what needs to be done to force the process
 * to halt when an unhandled exception is thrown in a Promise. Logging "1" and "2" before exiting.
 * */

process.on('unhandledRejection', function (reason, e) {
  // this could be from a promise so sure, throw it again, I guess..
  throw e;
});

setTimeout(function () {
  console.log(3);
}, 100);

// NOTICE: Even though the error is thrown synchronously between 1 and 2 being logged,
//         the process continues to execute the logging of 2. There's no way to 
//         force it to panic before then AFAIK.

console.log(1);
new Promise(function () {
  throw new Error('boo');
});
console.log(2);

I ran this in Node 5.0.0... FWIW.