diff --git a/getDevToolsMiddleware.js b/getDevToolsMiddleware.js
new file mode 100644
index 00000000..2c1d693a
--- /dev/null
+++ b/getDevToolsMiddleware.js
@@ -0,0 +1,50 @@
+/**
+ * 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 execFile = require('child_process').execFile;
+var fs = require('fs');
+var path = require('path');
+
+module.exports = function(options) {
+  return function(req, res, next) {
+    if (req.url === '/debugger-ui') {
+      var debuggerPath = path.join(__dirname, 'debugger.html');
+      res.writeHead(200, {'Content-Type': 'text/html'});
+      fs.createReadStream(debuggerPath).pipe(res);
+    } else if (req.url === '/debuggerWorker.js') {
+      var workerPath = path.join(__dirname, 'debuggerWorker.js');
+      res.writeHead(200, {'Content-Type': 'application/javascript'});
+      fs.createReadStream(workerPath).pipe(res);
+    } else if (req.url === '/launch-safari-devtools') {
+      // TODO: remove `console.log` and dev tools binary
+      console.log(
+        'We removed support for Safari dev-tools. ' +
+        'If you still need this, please let us know.'
+      );
+    } else if (req.url === '/launch-chrome-devtools') {
+      var debuggerURL = 'http://localhost:' + options.port + '/debugger-ui';
+      var script = 'launchChromeDevTools.applescript';
+      console.log('Launching Dev Tools...');
+      execFile(
+        path.join(__dirname, script), [debuggerURL],
+        function(err, stdout, stderr) {
+          if (err) {
+            console.log('Failed to run ' + script, err);
+          }
+          console.log(stdout);
+          console.warn(stderr);
+        }
+      );
+      res.end('OK');
+    } else {
+      next();
+    }
+  };
+};
diff --git a/packager.js b/packager.js
index fd040595..5d9704e8 100644
--- a/packager.js
+++ b/packager.js
@@ -8,23 +8,22 @@
  */
 'use strict';
 
-var fs = require('fs');
-var path = require('path');
-var childProcess = require('child_process');
-var http = require('http');
-var isAbsolutePath = require('absolute-path');
+const fs = require('fs');
+const path = require('path');
+const childProcess = require('child_process');
+const http = require('http');
+const isAbsolutePath = require('absolute-path');
 
-var getFlowTypeCheckMiddleware = require('./getFlowTypeCheckMiddleware');
-
-var chalk = require('chalk');
-var connect = require('connect');
-var ReactPackager = require('./react-packager');
-var blacklist = require('./blacklist.js');
-var checkNodeVersion = require('./checkNodeVersion');
-var formatBanner = require('./formatBanner');
-var launchEditor = require('./launchEditor.js');
-var parseCommandLine = require('./parseCommandLine.js');
-var webSocketProxy = require('./webSocketProxy.js');
+const blacklist = require('./blacklist.js');
+const chalk = require('chalk');
+const checkNodeVersion = require('./checkNodeVersion');
+const connect = require('connect');
+const formatBanner = require('./formatBanner');
+const getDevToolsMiddleware = require('./getDevToolsMiddleware');
+const launchEditor = require('./launchEditor.js');
+const parseCommandLine = require('./parseCommandLine.js');
+const ReactPackager = require('./react-packager');
+const webSocketProxy = require('./webSocketProxy.js');
 
 var options = parseCommandLine([{
   command: 'port',
@@ -178,36 +177,6 @@ function openStackFrameInEditor(req, res, next) {
   }
 }
 
-function getDevToolsLauncher(options) {
-  return function(req, res, next) {
-    if (req.url === '/debugger-ui') {
-      var debuggerPath = path.join(__dirname, 'debugger.html');
-      res.writeHead(200, {'Content-Type': 'text/html'});
-      fs.createReadStream(debuggerPath).pipe(res);
-
-    } else if (req.url === '/debuggerWorker.js') {
-      var workerPath = path.join(__dirname, 'debuggerWorker.js');
-      res.writeHead(200, {'Content-Type': 'application/javascript'});
-      fs.createReadStream(workerPath).pipe(res);
-
-    } else if (req.url === '/launch-chrome-devtools') {
-      var debuggerURL = 'http://localhost:' + options.port + '/debugger-ui';
-      var script = 'launchChromeDevTools.applescript';
-      console.log('Launching Dev Tools...');
-      childProcess.execFile(path.join(__dirname, script), [debuggerURL], function(err, stdout, stderr) {
-        if (err) {
-          console.log('Failed to run ' + script, err);
-        }
-        console.log(stdout);
-        console.warn(stderr);
-      });
-      res.end('OK');
-    } else {
-      next();
-    }
-  };
-}
-
 // A status page so the React/project.pbxproj build script
 // can verify that packager is running on 8081 and not
 // another program / service.
@@ -311,7 +280,7 @@ function runServer(
   var app = connect()
     .use(loadRawBody)
     .use(openStackFrameInEditor)
-    .use(getDevToolsLauncher(options))
+    .use(getDevToolsMiddleware(options))
     .use(statusPageMiddleware)
     .use(systraceProfileMiddleware)
     .use(cpuProfileMiddleware)