avoid TypeError on when registering service workers without config (f…

…acebook#5301) * avoid TypeError on when registering service workers without config Fixes facebook#5299 * same before config.onUpdate
zmitry · Oct 5, 2018 · 6d95977 · 6d95977
1 parent f6c61b8
commit 6d95977
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/template/src/serviceWorker.js b/template/src/serviceWorker.js
@@ -68,7 +68,7 @@ function registerValidSW(swUrl, config) {
               console.log('New content is available; please refresh.');
 
               // Execute callback
-              if (config.onUpdate) {
+              if (config && config.onUpdate) {
                 config.onUpdate(registration);
               }
             } else {
@@ -78,7 +78,7 @@ function registerValidSW(swUrl, config) {
               console.log('Content is cached for offline use.');
 
               // Execute callback
-              if (config.onSuccess) {
+              if (config && config.onSuccess) {
                 config.onSuccess(registration);
               }
             }