Adapt the internals to the latest versions of Sprockets and sprockets-rails

Author: carsomyr

app/helpers/requirejs_helper.rb

@@ -1,13 +1,14 @@
 require "requirejs/error"
-require "requirejs/rails/view_proxy"
+require "requirejs/rails/view"
 
 module RequirejsHelper
-  if defined?(Sass::Rails::VERSION)
-    sass_rails_version_pattern = Regexp.new("\\A(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\z")
+  def self.included(clazz)
+    clazz.class_eval do
+      extend Forwardable
 
-    SASS_RAILS_3_COMPATIBILITY = sass_rails_version_pattern.match(Sass::Rails::VERSION)[1].to_i < 4
-  else
-    SASS_RAILS_3_COMPATIBILITY = false
+      # Delegate all JavaScript path queries to the specially modified internal view.
+      def_delegators :view, :javascript_path
+    end
   end
 
   # EXPERIMENTAL: Additional priority settings appended to
@@ -85,26 +86,6 @@ def requirejs_include_tag(name = nil, &block)
     end
   end
 
-  def javascript_path(source, options = {})
-    if defined?(super)
-      if !SASS_RAILS_3_COMPATIBILITY
-        super
-      else
-        super(source)
-      end
-    else
-      view_proxy.javascript_path(source, options)
-    end
-  end
-
-  def content_tag(name, content_or_options_with_block = nil, options = nil, escape = true, &block)
-    if defined?(super) && respond_to?(:output_buffer) && respond_to?(:output_buffer=)
-      super
-    else
-      view_proxy.content_tag(name, content_or_options_with_block, options, escape, &block)
-    end
-  end
-
   private
 
   def once_guard
@@ -129,7 +110,7 @@ def base_url(js_asset)
     [asset_host, Rails.application.config.relative_url_root, Rails.application.config.assets.prefix].join
   end
 
-  def view_proxy
-    @view_proxy ||= Requirejs::Rails::ViewProxy.new
+  def view
+    @view ||= Requirejs::Rails::View.new
   end
 end

lib/requirejs/rails/config.rb

@@ -16,6 +16,7 @@ class Config < ::ActiveSupport::OrderedOptions
       LOGICAL_PATH_PATTERNS = [
           Regexp.new("\\.html\\z"),
           Regexp.new("\\.js\\z"),
+          Regexp.new("\\.es6\\z"),
           Regexp.new("\\.txt\\z"),
           BOWER_PATH_PATTERN
       ]

lib/requirejs/rails/engine.rb

@@ -50,6 +50,23 @@ class Engine < ::Rails::Engine
         end
       end
 
+      # Are we running in the precompilation Rake task? If so, we need to adjust certain environmental configuration
+      # values.
+      if defined?(Rake) && Rake.application.top_level_tasks.include?("requirejs:precompile:all")
+        initializer "requirejs.modify_environment_config", after: "load_environment_config", group: :all do |app|
+          app.configure do
+            # If we don't set this to true, sprockets-rails will assign `Rails.application.assets` to `nil`.
+            config.assets.compile = true
+
+            # Don't compress JavaScripts fed into the r.js optimizer.
+            config.assets.js_compressor = false
+
+            # Don't use any cache to retrieve assets.
+            config.assets.cache = nil
+          end
+        end
+      end
+
       if ::Rails::VERSION::MAJOR >= 4
         config.after_initialize do |app|
           config = app.config

lib/requirejs/rails/view.rb

@@ -0,0 +1,8 @@
+module Requirejs
+  module Rails
+    class View < ::ActionView::Base
+      # This allows requirejs-rails to serve up modules by their undigestified asset paths.
+      self.check_precompiled_asset = false
+    end
+  end
+end

lib/requirejs/rails/view_proxy.rb

@@ -88,14 +88,6 @@ OS X Homebrew users can use 'brew install node'.
                           "requirejs:clean"] do
       requirejs.config.source_dir.mkpath
 
-      # Save the original JS compressor and cache, which will be restored later.
-
-      original_js_compressor = requirejs.env.js_compressor
-      requirejs.env.js_compressor = false
-
-      original_cache = requirejs.env.cache
-      requirejs.env.cache = nil
-
       requirejs.env.each_logical_path(requirejs.config.logical_path_patterns) do |logical_path|
         m = ::Requirejs::Rails::Config::BOWER_PATH_PATTERN.match(logical_path)
 
@@ -118,10 +110,6 @@ OS X Homebrew users can use 'brew install node'.
           end
         end
       end
-
-      # Restore the original JS compressor and cache.
-      requirejs.env.js_compressor = original_js_compressor
-      requirejs.env.cache = original_cache
     end
 
     task generate_rjs_driver: ["requirejs:setup"] do
@@ -162,7 +150,7 @@ OS X Homebrew users can use 'brew install node'.
         built_asset_path = requirejs.config.build_dir.join(asset_name)
 
         # Compute the digest based on the contents of the compiled file, *not* on the contents of the RequireJS module.
-        file_digest = ::Rails.application.assets.file_digest(built_asset_path.to_s)
+        file_digest = requirejs.env.file_digest(built_asset_path.to_s)
         hex_digest = file_digest.unpack("H*").first
         digest_name = asset.logical_path.gsub(path_extension_pattern) { |ext| "-#{hex_digest}#{ext}" }