From 758e4402da63eb5cac1c6a6331fb0daef13a933c Mon Sep 17 00:00:00 2001
From: Wesley Wigham <t-weswig@microsoft.com>
Date: Thu, 24 Sep 2015 17:00:27 -0700
Subject: [PATCH] Add git hooks

---
 package.json                |  7 +++++--
 scripts/hooks/post-checkout |  2 ++
 scripts/link-hooks.js       | 20 ++++++++++++++++++++
 3 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 scripts/hooks/post-checkout
 create mode 100644 scripts/link-hooks.js

diff --git a/package.json b/package.json
index ba8edd188e4..16eff345bd9 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,8 @@
         "istanbul": "latest",
         "mocha-fivemat-progress-reporter": "latest",
         "tslint": "latest",
-        "tsd": "latest"
+        "tsd": "latest",
+        "npm": "^2"
     },
     "scripts": {
         "pretest": "jake tests",
@@ -44,7 +45,9 @@
         "build": "npm run build:compiler && npm run build:tests",
         "build:compiler": "jake local",
         "build:tests": "jake tests",
-        "clean": "jake clean"
+        "clean": "jake clean",
+		"jake": "jake",
+        "postinstall": "node scripts/link-hooks.js"
     },
     "browser": {
         "buffer": false,
diff --git a/scripts/hooks/post-checkout b/scripts/hooks/post-checkout
new file mode 100644
index 00000000000..10c13f6bbc3
--- /dev/null
+++ b/scripts/hooks/post-checkout
@@ -0,0 +1,2 @@
+#!/bin/sh
+echo "var npm = require("npm"); npm.load(function (err) {if (err) { throw err; } npm.commands.run(['jake', 'generate-diagnostics']); )" | node
\ No newline at end of file
diff --git a/scripts/link-hooks.js b/scripts/link-hooks.js
new file mode 100644
index 00000000000..33b5d4fd94f
--- /dev/null
+++ b/scripts/link-hooks.js
@@ -0,0 +1,20 @@
+var fs = require("fs");
+var path = require("path");
+
+var hooks = [
+	"post-checkout"
+];
+
+hooks.forEach(function (hook) {
+    var hookInSourceControl = path.resolve(__dirname, "hooks", hook);
+
+    if (fs.existsSync(hookInSourceControl)) {
+        var hookInHiddenDirectory = path.resolve(__dirname, "..", ".git", "hooks", hook);
+
+        if (fs.existsSync(hookInHiddenDirectory)) {
+            fs.unlinkSync(hookInHiddenDirectory);
+        }
+
+        fs.linkSync(hookInSourceControl, hookInHiddenDirectory);
+    }
+});
\ No newline at end of file