fix launcher w/ arbitrary flags (#2670)

GoogleChrome · Jul 11, 2017 · 8c9724e · 8c9724e
1 parent 78e761a
commit 8c9724e
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/chrome-launcher/manual-chrome-launcher.js b/chrome-launcher/manual-chrome-launcher.js
@@ -13,22 +13,22 @@
  */
 
 require('./compiled-check.js')('chrome-launcher.js');
+const {launch} = require('./chrome-launcher');
 
 const args = process.argv.slice(2);
-
 let chromeFlags;
 let startingUrl;
 let port;
 
 if (args.length) {
   chromeFlags = args.filter(flag => flag.startsWith('--'));
-  port = chromeFlags.find(flag => flag.startsWith('--port=')).replace('--port=', '');
+
+  const portFlag = chromeFlags.find(flag => flag.startsWith('--port='));
+  port = portFlag && portFlag.replace('--port=', '');
 
   startingUrl = args.find(flag => !flag.startsWith('--'));
 }
 
-const {launch} = require('./chrome-launcher');
-
 launch({
   startingUrl,
   port,