Rakefile in opal-0.3.40 vs Rakefile in opal-0.3.41

@@ -1,24 +1,22 @@
 require 'bundler'
 Bundler.require
 
+Opal::Processor.arity_check_enabled = true
+
 require 'opal/spec/rake_task'
 Opal::Spec::RakeTask.new(:default)
 
-desc "Run tests with method_missing turned off"
-task :test_no_method_missing do
-  # some specs will fail (namely method_missing based specs)
-  Opal::Processor.method_missing_enabled = false
-  Rake::Task[:default].invoke 
-end
-
 desc "Check file sizes for opal.js runtime"
 task :sizes do
-  o = Opal::Environment.new['opal'].to_s
-  m = uglify o
-  g = gzip m
+  env = Sprockets::Environment.new
+  Opal.paths.each { |p| env.append_path p }
 
-  puts "development: #{o.size}, minified: #{m.size}, gzipped: #{g.size}"
+  src = env['opal'].to_s
+  min = uglify src
+  gzp = gzip min
+
+  puts "development: #{src.size}, minified: #{min.size}, gzipped: #{gzp.size}"
 end
 
 desc "Rebuild grammar.rb for opal parser"
 task :racc do
   %x(racc -l lib/opal/grammar.y -o lib/opal/grammar.rb)