Default to empty string for PUBLIC_URL

wmonk · Aug 7, 2017 · 4dad65c · 4dad65c
1 parent f2a5c5f
commit 4dad65c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/react-scripts/template/src/registerServiceWorker.ts b/packages/react-scripts/template/src/registerServiceWorker.ts
@@ -23,7 +23,7 @@ export default function register() {
   if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
     // The URL constructor is available in all browsers that support SW.
     const publicUrl = new URL(
-      process.env.PUBLIC_URL,
+      process.env.PUBLIC_URL || '',
       window.location.toString()
     );
     if (publicUrl.origin !== window.location.origin) {