Add also function as a lesser evil to avoid callback hell

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/promises.js b/lib/promises.js
index 747bc5b..4c10285 100644
--- a/lib/promises.js
+++ b/lib/promises.js
@@ -1,9 +1,11 @@
+var _ = require("underscore");
 var bluebird = require("bluebird/js/main/promise")();
 
 exports.defer = bluebird.defer;
 exports.when = bluebird.resolve;
 exports.resolve = bluebird.resolve;
 exports.all = bluebird.all;
+exports.props = bluebird.props;
 exports.reject = bluebird.reject;
 exports.promisify = bluebird.promisify;
 
@@ -14,3 +16,10 @@ exports.nfcall = function(func) {
 };
 
 bluebird.prototype.fail = bluebird.prototype.caught;
+
+bluebird.prototype.also = function(func) {
+    return this.then(function(value) {
+        var returnValue = _.extend({}, value, func(value));
+        return bluebird.props(returnValue);
+    });
+};