fix: check if page has title element

Akryum · Akryum · commit 44620cc7aecd · 2022-10-05T09:59:47.000+02:00
diff --git a/packages/app-backend-core/src/index.ts b/packages/app-backend-core/src/index.ts
@@ -661,18 +661,16 @@ function connectBridge () {
 
   ctx.bridge.send(BridgeEvents.TO_FRONT_TITLE, { title: document.title })
   // Watch page title
-  if (typeof MutationObserver !== 'undefined') {
+  const titleEl = document.querySelector('title')
+  if (titleEl && typeof MutationObserver !== 'undefined') {
     if (pageTitleObserver) {
       pageTitleObserver.disconnect()
     }
     pageTitleObserver = new MutationObserver((mutations) => {
       const title = mutations[0].target as HTMLTitleElement
       ctx.bridge.send(BridgeEvents.TO_FRONT_TITLE, { title: title.innerText })
     })
-    pageTitleObserver.observe(
-      document.querySelector('title'),
-      { subtree: true, characterData: true, childList: true },
-    )
+    pageTitleObserver.observe(titleEl, { subtree: true, characterData: true, childList: true })
   }
 }
 
