Added all files

node_modules/mongoose/examples/promises/package.json

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+{
+  "name": "promise-example",
+  "private": "true",
+  "version": "0.0.0",
+  "description": "deps for promise example",
+  "main": "promise.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": { "async": "*" },
+  "repository": "",
+  "author": "",
+  "license": "BSD"
+}

node_modules/mongoose/examples/promises/person.js

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+
+// import the necessary modules
+var mongoose = require('../../lib');
+var Schema = mongoose.Schema;
+
+// create an export function to encapsulate the model creation
+module.exports = function() {
+  // define schema
+  var PersonSchema = new Schema({
+    name : String,
+    age : Number,
+    birthday : Date
+  });
+  mongoose.model('Person', PersonSchema);
+};

node_modules/mongoose/examples/promises/promise.js

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+
+// import async to make control flow simplier
+var async = require('async');
+
+// import the rest of the normal stuff
+var mongoose = require('../../lib');
+
+require('./person.js')();
+
+var Person = mongoose.model('Person');
+
+// define some dummy data
+var data = [
+  { name : 'bill', age : 25, birthday : new Date().setFullYear((new
+    Date().getFullYear() - 25)) },
+  { name : 'mary', age : 30, birthday : new Date().setFullYear((new
+    Date().getFullYear() - 30)) },
+  { name : 'bob', age : 21, birthday : new Date().setFullYear((new
+    Date().getFullYear() - 21)) },
+  { name : 'lilly', age : 26, birthday : new Date().setFullYear((new
+    Date().getFullYear() - 26)) },
+  { name : 'alucard', age : 1000, birthday : new Date().setFullYear((new
+    Date().getFullYear() - 1000)) },
+];
+
+
+mongoose.connect('mongodb://localhost/persons', function (err) {
+  if (err) throw err;
+
+  // create all of the dummy people
+  async.each(data, function (item, cb) {
+      Person.create(item, cb);
+    }, function (err) {
+      
+      // create a promise (get one from the query builder)
+      var prom = Person.find({age : { $lt : 1000 }}).exec();
+
+      // add a callback on the promise. This will be called on both error and
+      // complete
+      prom.addBack(function () { console.log("completed"); });
+
+      // add a callback that is only called on complete (success) events
+      prom.addCallback(function () { console.log("Successful Completion!"); });
+
+      // add a callback that is only called on err (rejected) events
+      prom.addErrback(function () { console.log("Fail Boat"); });
+
+      // you can chain things just like in the promise/A+ spec
+      // note: each then() is returning a new promise, so the above methods
+      // that we defined will all fire after the initial promise is fulfilled
+      prom.then(function (people) {
+
+        // just getting the stuff for the next query
+        var ids = people.map(function (p) {
+          return p._id;
+        });
+        
+        // return the next promise
+        return Person.find({ _id : { $nin : ids }}).exec();
+      }).then(function (oldest) {
+        console.log("Oldest person is: %s", oldest);
+      }).then(cleanup);
+  });
+});
+
+function cleanup() {
+  Person.remove(function() {
+    mongoose.disconnect();
+  });
+}