Use standard Ember.Handlebars.registerBoundHelper.

No need for the custom Ember.registerBoundHelper implementation.

assets/scripts/app/helpers/handlebars.coffee

@@ -1,5 +1,3 @@
-require 'ext/ember/bound_helper'
-
 safe = (string) ->
   new Handlebars.SafeString(string)
 
@@ -125,7 +123,7 @@ Ember.Handlebars.helper('travis-errors', (name, options) ->
 Handlebars.registerHelper 'tipsy', (text, tip) ->
   safe '<span class="tool-tip" original-title="' + tip + '">' + text + '</span>'
 
-Ember.registerBoundHelper 'capitalize', (value, options) ->
+Ember.Handlebars.registerBoundHelper 'capitalize', (value, options) ->
   if value?
     safe $.capitalize(value)
   else
@@ -140,10 +138,10 @@ Ember.Handlebars.helper('githubCommitLink', (slug, commitSha) ->
   safe '<a class="github-link only-on-hover" href="' + url + '">' + sha + '</a>'
 )
 
-Ember.registerBoundHelper 'formatTime', (value, options) ->
+Ember.Handlebars.registerBoundHelper 'formatTime', (value, options) ->
   safe Travis.Helpers.timeAgoInWords(value) || '-'
 
-Ember.registerBoundHelper 'formatDuration', (duration, options) ->
+Ember.Handlebars.registerBoundHelper 'formatDuration', (duration, options) ->
   safe Travis.Helpers.timeInWords(duration)
 
 Ember.Handlebars.helper('formatCommit', (commit) ->
@@ -153,16 +151,16 @@ Ember.Handlebars.helper('formatCommit', (commit) ->
 Ember.Handlebars.helper 'formatSha', (sha) ->
   safe Travis.Helpers.formatSha(sha)
 
-Ember.registerBoundHelper 'pathFrom', (url, options) ->
+Ember.Handlebars.registerBoundHelper 'pathFrom', (url, options) ->
   safe Travis.Helpers.pathFrom(url)
 
 Ember.Handlebars.helper 'formatMessage', (message, options) ->
   safe Travis.Helpers.formatMessage(message, options.hash)
 
-Ember.registerBoundHelper 'formatConfig', (config, options) ->
+Ember.Handlebars.registerBoundHelper 'formatConfig', (config, options) ->
   safe Travis.Helpers.formatConfig(config)
 
-Ember.registerBoundHelper 'shortCompareShas', (url, options) ->
+Ember.Handlebars.registerBoundHelper 'shortCompareShas', (url, options) ->
   path = Travis.Helpers.pathFrom(url)
   if path.indexOf('...') >= 0
     shas = path.split('...')
@@ -170,7 +168,7 @@ Ember.registerBoundHelper 'shortCompareShas', (url, options) ->
   else
     path
 
-Ember.registerBoundHelper 'formatLog', (log, options) ->
+Ember.Handlebars.registerBoundHelper 'formatLog', (log, options) ->
   parentView =  @get 'parentView'
   repo = parentView.get(options.repo)
   item = parentView.get(options.item)

assets/scripts/lib/ext/ember/bound_helper.js

@@ -1,68 +0,0 @@
-// https://gist.github.com/2018185
-// For reference: https://github.com/wagenet/ember.js/blob/ac66dcb8a1cbe91d736074441f853e0da474ee6e/packages/ember-handlebars/lib/views/bound_property_view.js
-var BoundHelperView = Ember.View.extend(Ember._Metamorph, {
-
-  context: null,
-  options: null,
-  property: null,
-  // paths of the property that are also observed
-  propertyPaths: [],
-
-  value: Ember.K,
-
-  valueForRender: function() {
-    var value = this.value(Ember.get(this.context, this.property), this.options);
-    if (this.options.escaped) { value = Handlebars.Utils.escapeExpression(value); }
-    return value;
-  },
-
-  render: function(buffer) {
-    buffer.push(this.valueForRender());
-  },
-
-  valueDidChange: function() {
-    if (this.morph.isRemoved()) { return; }
-    this.morph.html(this.valueForRender());
-  },
-
-  didInsertElement: function() {
-    this.valueDidChange();
-  },
-
-  init: function() {
-    this._super();
-    Ember.addObserver(this.context, this.property, this, 'valueDidChange');
-    this.get('propertyPaths').forEach(function(propName) {
-        Ember.addObserver(this.context, this.property + '.' + propName, this, 'valueDidChange');
-    }, this);
-  },
-
-  destroy: function() {
-    Ember.removeObserver(this.context, this.property, this, 'valueDidChange');
-    this.get('propertyPaths').forEach(function(propName) {
-        this.context.removeObserver(this.property + '.' + propName, this, 'valueDidChange');
-    }, this);
-    this._super();
-  }
-
-});
-
-Ember.registerBoundHelper = function(name, func) {
-  var propertyPaths = Array.prototype.slice.call(arguments, 2);
-  Ember.Handlebars.registerHelper(name, function(property, options) {
-    var data = options.data,
-        view = data.view,
-        ctx  = this;
-
-    var bindView = view.createChildView(BoundHelperView, {
-      property: property,
-      propertyPaths: propertyPaths,
-      context: ctx,
-      options: options.hash,
-      value: func
-    });
-
-    view.appendChild(bindView);
-  });
-};
-