Fix build, bump deps for node4, sync currentTarget.

Existing `master` was failing. We specify our jquery dependency with
`>= 1.5` which at some point between the previous PR and now started
picking up a `>2.0.0` release. jQuery2 doesn't work with the old version
of jsdom we use. The latest version of jsdom requires nodejs >= 4.0.

The latest jsdom also introduced some issues with our tests: previously,
`selectionStart` was undefined, but they have since added support for
it. Some tests set values directly e.g. with `.val('4242')` and then try
to format by triggering an event. This once worked when `selectionStart`
was `undefined`, but since jsdom added a `selectionStart` API, our
`formatCardNumber` implementation saw it as `0` (rather than
`undefined`), not matching the end of the input, and returned early.
Those tests were updated to move `selectionStart` to the correct
position before triggering the formatting event.

The latest jsdom + zepto also results in `e.currentTarget` being
undefined in async handling of events, for some reason. In the `format*`
funcs, `e.currentTarget` is saved to a local synchronously. In the
`reFormat*` funcs, it was grabbed async, causing some tests to
fail. The `reFormat*` funcs were updated to grab `e.currentTarget`
synchronously. This was the only change to production code.

.travis.yml

@@ -1,3 +1,3 @@
 language: node_js
 node_js:
-  - "0.10"
+  - "4"

package.json

@@ -23,7 +23,7 @@
   "devDependencies": {
     "cake": "~0.1",
     "coffee-script": "~1.7",
-    "jsdom": "~0.10",
+    "jsdom": "~7.2",
     "mocha": "~1.18",
     "uglify-js": "~2.4.24",
     "zeptojs": "~1.1"

src/jquery.payment.coffee

@@ -180,8 +180,8 @@ replaceFullWidthChars = (str = '') ->
 # Format Numeric
 
 reFormatNumeric = (e) ->
+  $target = $(e.currentTarget)
   setTimeout ->
-    $target = $(e.currentTarget)
     value   = $target.val()
     value   = replaceFullWidthChars(value)
     value   = value.replace(/\D/g, '')
@@ -190,8 +190,8 @@ reFormatNumeric = (e) ->
 # Format Card Number
 
 reFormatCardNumber = (e) ->
+  $target = $(e.currentTarget)
   setTimeout ->
-    $target = $(e.currentTarget)
     value   = $target.val()
     value   = replaceFullWidthChars(value)
     value   = $.payment.formatCardNumber(value)
@@ -254,8 +254,8 @@ formatBackCardNumber = (e) ->
 # Format Expiry
 
 reFormatExpiry = (e) ->
+  $target = $(e.currentTarget)
   setTimeout ->
-    $target = $(e.currentTarget)
     value   = $target.val()
     value   = replaceFullWidthChars(value)
     value   = $.payment.formatExpiry(value)
@@ -324,8 +324,8 @@ formatBackExpiry = (e) ->
 # Format CVC
 
 reFormatCVC = (e) ->
+  $target = $(e.currentTarget)
   setTimeout ->
-    $target = $(e.currentTarget)
     value   = $target.val()
     value   = replaceFullWidthChars(value)
     value   = value.replace(/\D/g, '')[0...4]

test/jquery.coffee

@@ -1,4 +1,4 @@
-window = require('jsdom').jsdom().createWindow()
+window = require('jsdom').jsdom().defaultView
 global.$ = require('jquery')(window)
 global.window = window
 global.document = window.document

test/specs.coffee

@@ -284,7 +284,7 @@ describe 'jquery.payment', ->
   describe 'formatCardNumber', ->
     it 'should format cc number correctly', (done) ->
       $number = $('<input type=text>').payment('formatCardNumber')
-      $number.val('4242')
+      $number.val('4242').prop('selectionStart', 4)
 
       e = $.Event('keypress')
       e.which = 52 # '4'
@@ -296,7 +296,7 @@ describe 'jquery.payment', ->
 
     it 'should format amex cc number correctly', (done) ->
       $number = $('<input type=text>').payment('formatCardNumber')
-      $number.val('3782')
+      $number.val('3782').prop('selectionStart', 4)
 
       e = $.Event('keypress')
       e.which = 56 # '8'

test/zepto.coffee

@@ -1,4 +1,4 @@
-window = require('jsdom').jsdom().createWindow()
+window = require('jsdom').jsdom().defaultView
 global.window = window
 global.document = window.document
 global.getComputedStyle = window.getComputedStyle