npm install --save promise-whoops
require('promise-whoops')(Promise);
var prom = Promise.reject();
prom.whoops(function(){
console.warn('whoops!');
});
require('promise-whoops')(Promise);
var prom = new Promise(function(resolve, reject){
reject('example rejection.');
});
prom.then(function(){
}).whoops(function(why){
console.warn('Promise rejected: ' + why);
});