grunt 1.2.0 (new formula)

Closes #10972.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/grunt.rb

@@ -0,0 +1,39 @@
+require "language/node"
+
+class Grunt < Formula
+  desc "JavaScript Task Runner"
+  homepage "https://gruntjs.com/"
+  url "https://registry.npmjs.org/grunt-cli/-/grunt-cli-1.2.0.tgz"
+  sha256 "fdb1d4bd83435b3f70614b608e0027a0d75ebfda151396bb99c46405334a01d8"
+
+  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/"package.json").write <<-EOS.undent
+    {
+      "name": "grunt-homebrew-test",
+      "version": "1.0.0",
+      "devDependencies": {
+        "grunt": ">=0.4.0"
+      }
+    }
+    EOS
+
+    (testpath/"Gruntfile.js").write <<-EOS.undent
+    module.exports = function(grunt) {
+      grunt.registerTask("default", "Write output to file.", function() {
+        grunt.file.write("output.txt", "Success!");
+      })
+    };
+    EOS
+
+    system "npm", "install", *Language::Node.local_npm_install_args
+    system bin/"grunt"
+    assert File.exist?("output.txt"), "output.txt was not generated"
+  end
+end