Removes a dependency on underscore.

We were using it for one function, which was super lame.

lib/index.js

@@ -1,14 +1,14 @@
 var jade = require('jade')
-  , _ = require('underscore')
   , nodemailer = require('nodemailer')
   , fs = require('fs')
+  , utils = require('./utils')
   , path = require('path')
 
 module.exports = Balloon
 
 function Balloon(config) {
   this.transport = nodemailer.createTransport("SES", config.auth)
-  _.defaults(config, {
+  utils.defaults(config, {
     templateDirectory: path.join(__dirname, 'templates')
   })
 
@@ -26,7 +26,7 @@ Balloon.prototype.send = function (template, model, params, callback) {
     if (err) {
       // don't know yet
     } else {
-      _.defaults(params, {
+      utils.defaults(params, {
         html: result
       })
       self.transport.sendMail(params, function (err, responseStatus) {

lib/utils.js

@@ -0,0 +1,9 @@
+
+exports.defaults = function (obj) {
+  Array.prototype.slice.apply(arguments).slice(1).forEach(function (source) {
+    for (var p in source) {
+      if (obj[p] == null) obj[p] = source[p]
+    }
+  })
+  return obj
+}

package.json

@@ -18,8 +18,7 @@
   "license": "MIT",
   "dependencies": {
     "jade": "~0.27.2",
-    "nodemailer": "~0.3.22",
-    "underscore": "~1.3.3"
+    "nodemailer": "~0.3.22"
   },
   "devDependencies": {
     "mocha": "~1.3.2",

test/utils.js

@@ -0,0 +1,19 @@
+var mocha = require('mocha')
+  , utils = require('../lib/utils')
+  , assert = require('assert')
+
+describe('balloon utils', function () {
+
+  it('sets defaults of an object', function () {
+    var result,
+        opts = {zero: 0, one: 1, empty: '', nan: NaN, string: "str"}
+
+    utils.defaults(opts, {zero: 1, one: 2, two: 3})
+    assert.equal(opts.zero, 0)
+    assert.equal(opts.one, 1)
+    assert.equal(opts.two, 3)
+    assert.equal(opts.empty, '')
+    assert.equal(opts.string, 'str')
+  })
+
+})