From 856f9e9fed8df05b7b36a584217a2ba8d7d8f853 Mon Sep 17 00:00:00 2001
From: Shawn Wilsher <sdwilsh@fb.com>
Date: Fri, 29 Apr 2016 09:24:27 -0700
Subject: [PATCH] Add `--version` to `local-cli/cli.js`

Summary:
[Buck](https://buckbuild.com) has a concept of a versioned tool.  In order to
properly use RN with Buck, the `cli.js` script should return the proper version
when passed `--version`.

Reviewed By: astreet

Differential Revision: D3197207

fb-gh-sync-id: 12ea35587cf492eb89d7dd102e93bdd26bc813c0
fbshipit-source-id: 12ea35587cf492eb89d7dd102e93bdd26bc813c0
---
 local-cli/cli.js             |  2 ++
 local-cli/version/version.js | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 local-cli/version/version.js

diff --git a/local-cli/cli.js b/local-cli/cli.js
index 6de43c546..a1418cd25 100644
--- a/local-cli/cli.js
+++ b/local-cli/cli.js
@@ -30,6 +30,7 @@ var TerminalAdapter = require('yeoman-environment/lib/adapter.js');
 var yeoman = require('yeoman-environment');
 var unbundle = require('./bundle/unbundle');
 var upgrade = require('./upgrade/upgrade');
+var version = require('./version/version');
 
 var fs = require('fs');
 var gracefulFs = require('graceful-fs');
@@ -56,6 +57,7 @@ Object.keys(documentedCommands).forEach(function(command) {
 });
 
 var undocumentedCommands = {
+  '--version': [version, ''],
   'init': [printInitWarning, ''],
 };
 
diff --git a/local-cli/version/version.js b/local-cli/version/version.js
new file mode 100644
index 000000000..523172e5e
--- /dev/null
+++ b/local-cli/version/version.js
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+'use strict';
+
+var pkg = require('../../package');
+var Promise = require('promise');
+
+/**
+ * Prints the version of react-native and exits.
+ */
+function version(argv, config) {
+  console.log(pkg.version);
+  return Promise.resolve();
+}
+
+module.exports = version;