Fix not to read property of null

100% reproduced issue in my case 1. child sent connect message to parent 2. parent receives the message but this.iframe.contentWindow is null when parent closes child iframe before done with rendering
SpringRoll · Feb 9, 2022 · 77e2641 · 77e2641
1 parent 0d4eba3
commit 77e2641
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/Bellhop.js b/src/Bellhop.js
@@ -140,6 +140,10 @@ export class Bellhop extends BellhopEventDispatcher {
 
     // Be polite and respond to the child that we're ready
     if (!this.isChild) {
+      // Timing issue: this.iframe.contentWindow is null when parent closes child iframe before done with rendering
+      if (!this.target) {
+        return;
+      }
       this.target.postMessage(message, this.origin);
     }