Bump Version, update README

  * due to sprockets digest method, we are forced to use a workaround to allow
  "precompilation" of .dart files, see [non-stupid-digest-assets](https://github.com/alexspeller/non-stupid-digest-assets)
  and [Inability to compile nondigest and digest assets breaks compatibility with bad gems #49](rails/sprockets-rails#49)
  it is optionally (and automatically) available by adding `gem 'non-stupid-digest-assets', '>= 1.1', github: 'm0gg/non-stupid-digest-assets'
` to your Gemfile
  * added dart_app.js to precompile list
  * faced an issue with UglifyJs stackoverflowing with too large dart2js files

README.md

@@ -2,6 +2,15 @@ dart-rails
 ==========
 
 ### Changelog
+v0.2.1 - 04. Dec. 2014:
+  * due to sprockets digest method, we are forced to use a workaround to allow
+  "precompilation" of .dart files, see [non-stupid-digest-assets](https://github.com/alexspeller/non-stupid-digest-assets)
+  and [Inability to compile nondigest and digest assets breaks compatibility with bad gems #49](https://github.com/rails/sprockets-rails/issues/49)
+  it is optionally (and automatically) available by adding `gem 'non-stupid-digest-assets', '>= 1.1', github: 'm0gg/non-stupid-digest-assets'
+` to your Gemfile
+  * added dart_app.js to precompile list
+  * faced an issue with UglifyJs stackoverflowing with too large dart2js files
+
 v0.2.0 - 08. Oct. 2014:
   * dart-rails can now detect changes in dart code and its dependencies
   * RailsUjs call is now in the initial dart_app.dart template
@@ -74,6 +83,41 @@ For a working sample check [m0gg/dart-rails-sample](https://github.com/m0gg/dart
 
 ### Compatibility
 
+###### UglifyJs
+
+Don't worry if you're experiencing a
+
+```
+ExecJS::ProgramError: RangeError: Maximum call stack size exceeded
+```
+
+This is exactly what it means, a stackoverflow of UglifyJs. According to
+[RangeError: Maximum call stack size exceeded #414](https://github.com/mishoo/UglifyJS2/issues/414) UglifyJs is
+massivly recursive and your dart2js file might have blown it. This happened to me with an AngluarDart application.
+You may simply disable UglifyJs in the environment file.
+
+```
+...
+# Compress JavaScripts and CSS.
+# config.assets.js_compressor = :uglifier
+...
+```
+
+###### assets:precompile + native .dart files
+
+As of rails 4 we are facing a problem for the productive environments.
+See [Inability to compile nondigest and digest assets breaks compatibility with bad gems #49](https://github.com/rails/sprockets-rails/issues/49)
+
+You may optionally add this to your Gemfile
+
+```
+gem 'non-stupid-digest-assets', '>= 1.1', github: 'm0gg/non-stupid-digest-assets
+```
+
+this will enable a workaround for digesting the assets while precompiling dart files as
+seen in [non-stupid-digest-assets](https://github.com/alexspeller/non-stupid-digest-assets) and
+additionally rewrite the manifests to use the non-digest files.
+
 ###### ruby-dart_js
 
 This gem is needed for the `dart2js` compiler compatibility.

dart-rails.gemspec

@@ -19,5 +19,4 @@ Gem::Specification.new do |s|
   s.add_dependency 'rails', '>= 4.0.0'
   s.add_dependency 'ruby-dart2js', '~> 0.1.0'
   s.add_dependency 'sprockets-rails', '>= 2.0.0'
-  s.add_dependency 'non-stupid-digest-assets'
 end

lib/dart/rails/version.rb

@@ -1,5 +1,5 @@
 module Dart
   module Rails
-    VERSION = "0.2.0"
+    VERSION = "0.2.1"
   end
 end

lib/dart/railtie.rb

@@ -9,7 +9,6 @@
 require 'dart/rails/helper'
 require 'dart/rails/generators/assets/generator'
 
-require 'non-stupid-digest-assets'
 
 module Dart
   class Railtie < ::Rails::Railtie
@@ -22,14 +21,23 @@ class Railtie < ::Rails::Railtie
       ::Rails.application.config.assets.precompile << 'dart.js'
       ::Rails.application.config.assets.precompile << 'dart_app.js'
 
+      # [Optionally via: https://github.com/m0gg/non-stupid-digest-assets]
       # do not digest .dart files
       # digest during compilation breaks darts 'import' functionality
       # currently sprockets-rails does not allow mixed procompilation of digest and non-digest assets
       # see https://github.com/rails/sprockets-rails/issues/49
       # workaround is a 51-liner gem 'non-stupid-digest-assets'
       # https://github.com/alexspeller/non-stupid-digest-assets
       #
-      NonStupidDigestAssets.whitelist << /.*\.dart/
+      begin
+        require 'non-stupid-digest-assets'
+        if defined? NonStupidDigestAssets
+          NonStupidDigestAssets.whitelist += [ /.*\.dart/, 'dart_app.js', 'dart_app' ]
+        end
+      rescue Exception => e
+        ::Rails.logger.info 'No non-stupid-digest-assets support. You may face issues with native dart-support!'
+      end
+
 
       # Register mime-types
       app.assets.register_mime_type 'application/dart', '.dart'