Don't use global variables.

app/assets/javascripts/blob_edit/blob_edit_bundle.js

@@ -2,10 +2,10 @@
 
 (function() {
   $(function() {
-    url = $(".js-edit-blob-form").data("relative-url-root");
+    var url = $(".js-edit-blob-form").data("relative-url-root");
     url += $(".js-edit-blob-form").data("assets-prefix");
 
-    blob = new EditBlob(url, $('.js-edit-blob-form').data('blob-language'));
+    var blob = new EditBlob(url, $('.js-edit-blob-form').data('blob-language'));
     new NewCommitForm($('.js-edit-blob-form'));
   });
 

app/assets/javascripts/snippet/snippet_bundle.js

@@ -2,7 +2,7 @@
 
 (function() {
   $(function() {
-    editor = ace.edit("editor")
+    var editor = ace.edit("editor")
 
     $(".snippet-form-holder form").on('submit', function() {
       $(".snippet-file-content").val(editor.getValue());

features/steps/project/source/browse_files.rb

@@ -44,7 +44,7 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
   end
 
   step 'I should see its content with new lines preserved at end of file' do
-    expect(evaluate_script('blob.editor.getValue()')).to eq "Sample\n\n\n"
+    expect(evaluate_script('ace.edit("editor").getValue()')).to eq "Sample\n\n\n"
   end
 
   step 'I click link "Raw"' do
@@ -65,7 +65,7 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
 
   step 'I can edit code' do
     set_new_content
-    expect(evaluate_script('blob.editor.getValue()')).to eq new_gitignore_content
+    expect(evaluate_script('ace.edit("editor").getValue()')).to eq new_gitignore_content
   end
 
   step 'I edit code' do
@@ -74,7 +74,7 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
   end
 
   step 'I edit code with new lines at end of file' do
-    execute_script('blob.editor.setValue("Sample\n\n\n")')
+    execute_script('ace.edit("editor").setValue("Sample\n\n\n")')
   end
 
   step 'I fill the new file name' do
@@ -378,7 +378,7 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
   private
 
   def set_new_content
-    execute_script("blob.editor.setValue('#{new_gitignore_content}')")
+    execute_script("ace.edit('editor').setValue('#{new_gitignore_content}')")
   end
 
   # Content of the gitignore file on the seed repository.