Merge pull request #2428 from jgoz/fix-actions-undefined-descriptor

[addon-actions] Check result of getPropertyDescriptor for IE11
storybookjs · Dec 5, 2017 · 267b90a · 267b90a
2 parents 1db950d + 1813b89
commit 267b90a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/addons/actions/src/preview.js b/addons/actions/src/preview.js
@@ -24,8 +24,10 @@ export function action(name) {
     });
   };
 
+  // IE11 may return an undefined descriptor, but it supports Function#name
+  const nameDescriptor = Object.getOwnPropertyDescriptor(handler, 'name');
   // This condition is true in modern browsers that implement Function#name properly
-  const canConfigureName = Object.getOwnPropertyDescriptor(handler, 'name').configurable;
+  const canConfigureName = !nameDescriptor || nameDescriptor.configurable;
 
   if (canConfigureName && name && typeof name === 'string') {
     Object.defineProperty(handler, 'name', { value: name });