CoffeeScript compiler is slow. Take steps to avoid it.

Rakefile

@@ -8,7 +8,7 @@ task :build do
 
   dest = File.join(built_dir, contents_dir, "Resources")
 
-  %w(index.html src docs static extensions vendor ).each do |dir|
+  %w(index.html src docs static extensions vendor spec).each do |dir|
     rm_rf File.join(dest, dir)
     cp_r dir, File.join(dest, dir)
   end
@@ -19,7 +19,7 @@ task :build do
           "http://coffeescript.org/ - (try `npm i -g coffee-script`)"
   end
 
-  sh "coffee -c #{dest}/src/stdlib/require.coffee"
+  sh "coffee -c #{dest}/src #{dest}/vendor #{dest}/extensions #{dest}/spec"
 end
 
 desc "Install the app in /Applications"

src/stdlib/require.coffee

@@ -79,8 +79,13 @@ resolve = (file) ->
 
   if file[0] isnt '/'
     require.paths.some (path) ->
-      if /\.(.+)$/.test(file) and __exists "#{path}/#{file}"
+      fileExists = /\.(.+)$/.test(file) and __exists "#{path}/#{file}"
+      jsFileExists = not /\.(.+)$/.test(file) and __exists "#{path}/#{file}.js"
+
+      if fileExists
         file = "#{path}/#{file}"
+      if jsFileExists
+        file = "#{path}/#{file}.js"
       else if expanded = __expand "#{path}/#{file}"
         file = expanded
   else