babel 6.22.2 (new formula)

Closes #9517.

Signed-off-by: William Woodruff <william@tuffbizz.com>

Formula/babel.rb

@@ -0,0 +1,24 @@
+require "language/node"
+
+class Babel < Formula
+  desc "Compiler for writing next generation JavaScript"
+  homepage "https://babeljs.io/"
+  url "https://registry.npmjs.org/babel-cli/-/babel-cli-6.22.2.tgz"
+  sha256 "209ea6087373d542b8bfb43f5d9188a07ca8864de370fba61ecd03f14cb4eb9a"
+
+  depends_on "node"
+
+  def install
+    system "npm", "install", *Language::Node.std_npm_install_args(libexec)
+    bin.install_symlink Dir["#{libexec}/bin/*"]
+  end
+
+  test do
+    (testpath/"script.js").write <<-EOS.undent
+      [1,2,3].map(n => n + 1);
+    EOS
+
+    system bin/"babel", "script.js", "--out-file", "script-compiled.js"
+    assert File.exist?("script-compiled.js"), "script-compiled.js was not generated"
+  end
+end