From dd5681d84e5d267c0a6019101fdd0f22bac1f90d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Paul=20O=E2=80=99Shannessy?= <paul@oshannessy.com>
Date: Mon, 2 May 2016 16:40:04 -0700
Subject: [PATCH] Setup grunt flow task and run on travis

---
 .travis.yml         |  1 +
 Gruntfile.js        |  2 ++
 grunt/tasks/flow.js | 22 ++++++++++++++++++++++
 package.json        |  1 +
 4 files changed, 26 insertions(+)
 create mode 100644 grunt/tasks/flow.js

diff --git a/.travis.yml b/.travis.yml
index 420e840251074..5824e1564be5a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -87,6 +87,7 @@ env:
   - TEST_TYPE=build
   - TEST_TYPE=test
   - TEST_TYPE=lint
+  - TEST_TYPE=flow
   - TEST_TYPE=build_website
   global:
   # SERVER
diff --git a/Gruntfile.js b/Gruntfile.js
index f1f3c435670d3..9562542441e2f 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -56,6 +56,8 @@ module.exports = function(grunt) {
 
   grunt.registerTask('lint', ['eslint']);
 
+  grunt.registerTask('flow', require('./grunt/tasks/flow'));
+
   grunt.registerTask('delete-build-modules', function() {
     // Use gulp here.
     spawnGulp(['react:clean'], null, this.async());
diff --git a/grunt/tasks/flow.js b/grunt/tasks/flow.js
new file mode 100644
index 0000000000000..767fc4eea65b4
--- /dev/null
+++ b/grunt/tasks/flow.js
@@ -0,0 +1,22 @@
+'use strict';
+
+var grunt = require('grunt');
+
+var extension = process.platform === 'win32' ? '.cmd': '';
+
+module.exports = function() {
+  var done = this.async();
+  grunt.util.spawn({
+    cmd: 'node_modules/.bin/flow' + extension,
+    args: ['check', '.'],
+    opts: {stdio: 'inherit'},
+  }, function(err, result, code) {
+    if (err) {
+      grunt.log.error('Flow failed');
+    } else {
+      grunt.log.ok('Flow passed');
+    }
+
+    done(code === 0);
+  });
+};
diff --git a/package.json b/package.json
index cb0464bf8db1c..41fff643ceeb5 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "eslint-plugin-react-internal": "file:eslint-rules",
     "fbjs": "^0.8.0",
     "fbjs-scripts": "^0.6.0",
+    "flow-bin": "^0.24.1",
     "glob": "^6.0.1",
     "grunt": "^0.4.5",
     "grunt-cli": "^0.1.13",