diff --git a/lib/autotest/discover.rb b/lib/autotest/discover.rb
new file mode 100644
index 0000000..c609b68
--- /dev/null
+++ b/lib/autotest/discover.rb
@@ -0,0 +1 @@
+Autotest.add_discovery { 'jasmine' if File.file?('./spec/javascripts/support/jasmine.yml') }
diff --git a/lib/autotest/jasmine.rb b/lib/autotest/jasmine.rb
new file mode 100644
index 0000000..77c23be
--- /dev/null
+++ b/lib/autotest/jasmine.rb
@@ -0,0 +1,7 @@
+require 'autotest'
+require 'autotest/jasmine_mixin'
+
+class Autotest::Jasmine < Autotest
+  include JasmineMixin
+end
+
diff --git a/lib/autotest/jasmine_mixin.rb b/lib/autotest/jasmine_mixin.rb
new file mode 100644
index 0000000..16440df
--- /dev/null
+++ b/lib/autotest/jasmine_mixin.rb
@@ -0,0 +1,84 @@
+module JasmineMixin
+  JASMINE_PROGRAM = File.expand_path('../../../bin/jasmine-headless-webkit', __FILE__)
+
+  def self.included(klass)
+    klass::ALL_HOOKS << [ :run_jasmine, :ran_jasmine ]
+  end
+
+  attr_accessor :is_jasmine_running, :jasmine_to_run
+
+  def initialize
+    super()
+    setup_jasmine_project_mappings
+  end
+
+  def get_to_green
+    begin
+      reset_jasmine(:no)
+      super if find_files_to_test
+
+      reset_jasmine(:yes)
+      run_jasmine if find_files_to_test
+
+      self.is_jasmine_running = :all
+      wait_for_changes unless all_jasmine_good
+    end until all_jasmine_good
+
+    reset_jasmine(:all)
+  end
+
+  def reset_jasmine(method)
+    self.files_to_test = new_hash_of_arrays
+    self.is_jasmine_running = method
+  end
+
+  def run_jasmine
+    hook :run_jasmine
+
+    self.jasmine_to_run = :all
+
+    if mtime = find_files_to_test
+      self.last_mtime = mtime
+    end
+
+    begin
+      system make_jasmine_cmd
+
+      self.jasmine_to_run = ($?.exitstatus == 0) ? :none : :all
+    end
+
+    hook :ran_jasmine
+  end
+
+  def all_jasmine_good
+    self.jasmine_to_run == :none
+    self.files_to_test = new_hash_of_arrays
+  end
+
+  def find_files
+    Hash[super.find_all { |file, mtime|
+      case self.is_jasmine_running
+      when :all
+        true
+      when :no
+        file[%r{\.js$}] == nil
+      when :yes
+        file[%r{\.js$}] != nil
+      end
+    }]
+  end
+
+  def make_jasmine_cmd
+    "#{JASMINE_PROGRAM} -c"
+  end
+
+  def setup_jasmine_project_mappings
+    add_mapping(%r{spec/javascripts/.*_spec\.js}) { |filename, _|
+      filename
+    }
+
+    add_mapping(%r{public/javascripts/(.*)\.js}) { |_, m|
+      [ "spec/javascripts/#{m[1]}_spec.js" ]
+    }
+  end
+end
diff --git a/lib/autotest/jasmine_rspec2.rb b/lib/autotest/jasmine_rspec2.rb
new file mode 100644
index 0000000..f7fa2d7
--- /dev/null
+++ b/lib/autotest/jasmine_rspec2.rb
@@ -0,0 +1,7 @@
+require 'autotest/rspec2'
+require 'autotest/jasmine_mixin'
+
+class Autotest::JasmineRspec2 < Autotest::Rspec2
+  include JasmineMixin
+end
+