diff --git a/Library/Formula/iojs.rb b/Library/Formula/iojs.rb
new file mode 100644
index 000000000000..c85cd343b1db
--- /dev/null
+++ b/Library/Formula/iojs.rb
@@ -0,0 +1,132 @@
+# Note that x.even are stable releases, x.odd are devel releases
+class Node < Formula
+  homepage "https://iojs.org/"
+  url "https://iojs.org/dist/v1.0.0/iojs-v1.0.0.tar.gz"
+  sha256 "dcc6ccd99fffa20ebe59b35acca51150cfd68171cbf36fee210b3f5480964d05"
+
+  bottle do
+    revision 1
+    sha1 "a98a1df66cfb0712b14489186c46f7087ba35bd7" => :yosemite
+    sha1 "0cd45412840a67d5d65e6bc3c0c3bcf8bc23153c" => :mavericks
+    sha1 "977332381c033626b991002c27e738c144ebbaac" => :mountain_lion
+  end
+
+  deprecated_option "enable-debug" => "with-debug"
+
+  option "with-debug", "Build with debugger hooks"
+  option "without-npm", "npm will not be installed"
+  option "without-completion", "npm bash completion will not be installed"
+
+  depends_on :python => :build
+
+  fails_with :llvm do
+    build 2326
+  end
+
+  resource "npm" do
+    url "https://registry.npmjs.org/npm/-/npm-2.1.18.tgz"
+    sha1 "e2af4c5f848fb023851cd2ec129005d33090bd57"
+  end
+
+  def install
+    args = %W{--prefix=#{prefix} --without-npm}
+    args << "--debug" if build.with? "debug"
+
+    # This should eventually be able to use the system icu4c, but right now
+    # it expects to find this dependency using pkgconfig.
+    if build.head?
+      ENV.prepend_path "PKG_CONFIG_PATH", "#{Formula["icu4c"].opt_prefix}/lib/pkgconfig"
+      args << "--with-intl=system-icu"
+    end
+
+    system "./configure", *args
+    system "make", "install"
+
+    if build.with? "npm"
+      resource("npm").stage buildpath/"npm_install"
+
+      # make sure npm can find iojs
+      ENV.prepend_path "PATH", bin
+
+      # set log level temporarily for npm's `make install`
+      ENV["NPM_CONFIG_LOGLEVEL"] = "verbose"
+
+      cd buildpath/"npm_install" do
+        system "./configure", "--prefix=#{libexec}/npm"
+        system "make", "install"
+      end
+
+      if build.with? "completion"
+        bash_completion.install \
+          buildpath/"npm_install/lib/utils/completion.sh" => "npm"
+      end
+    end
+  end
+
+  def post_install
+    return if build.without? "npm"
+
+    node_modules = HOMEBREW_PREFIX/"lib/node_modules"
+    node_modules.mkpath
+    npm_exec = node_modules/"npm/bin/npm-cli.js"
+    # Kill npm but preserve all other modules across iojs updates/upgrades.
+    rm_rf node_modules/"npm"
+
+    cp_r libexec/"npm/lib/node_modules/npm", node_modules
+    # This symlink doesn't hop into homebrew_prefix/bin automatically so
+    # remove it and make our own. This is a small consequence of our bottle
+    # npm make install workaround. All other installs **do** symlink to
+    # homebrew_prefix/bin correctly. We ln rather than cp this because doing
+    # so mimics npm's normal install.
+    ln_sf npm_exec, "#{HOMEBREW_PREFIX}/bin/npm"
+
+    # Let's do the manpage dance. It's just a jump to the left.
+    # And then a step to the right, with your hand on rm_f.
+    ["man1", "man3", "man5", "man7"].each do |man|
+      rm_f Dir[HOMEBREW_PREFIX/"share/man/#{man}/{npm.,npm-,npmrc.}*"]
+      Dir[libexec/"npm/share/man/#{man}/npm*"].each {|f| ln_sf f, HOMEBREW_PREFIX/"share/man/#{man}" }
+    end
+
+    npm_root = node_modules/"npm"
+    npmrc = npm_root/"npmrc"
+    npmrc.atomic_write("prefix = #{HOMEBREW_PREFIX}\n")
+  end
+
+  def caveats
+    s = ""
+
+    if build.with? "npm"
+      s += <<-EOS.undent
+        If you update npm itself, do NOT use the npm update command.
+        The upstream-recommended way to update npm is:
+          npm install -g npm@latest
+      EOS
+    else
+      s += <<-EOS.undent
+        Homebrew has NOT installed npm. If you later install it, you should supplement
+        your NODE_PATH with the npm module folder:
+          #{HOMEBREW_PREFIX}/lib/node_modules
+      EOS
+    end
+
+    s
+  end
+
+  test do
+    path = testpath/"test.js"
+    path.write "console.log('hello');"
+
+    output = `#{bin}/iojs #{path}`.strip
+    assert_equal "hello", output
+    assert_equal 0, $?.exitstatus
+
+    if build.with? "npm"
+      # make sure npm can find node
+      ENV.prepend_path "PATH", opt_bin
+      assert_equal which("iojs"), opt_bin/"iojs"
+      assert (HOMEBREW_PREFIX/"bin/npm").exist?, "npm must exist"
+      assert (HOMEBREW_PREFIX/"bin/npm").executable?, "npm must be executable"
+      system "#{HOMEBREW_PREFIX}/bin/npm", "--verbose", "install", "npm@latest"
+    end
+  end
+end