Unify oss and internal version of dev-tools middleware

Reviewed By: @amasad

Differential Revision: D2518928

fb-gh-sync-id: 0c98b16481b524436a2cf4af3e196ac5715b55ee

packager/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();
+    }
+  };
+};