undefined check

Author: liamdebeasi

core/src/utils/transition/ios.transition.ts

@@ -243,11 +243,11 @@ export const iosTransitionAnimation = (navEl: HTMLElement, opts: TransitionOptio
          * when double tapping the ion-back-button.
          */
         enteringEl.style.setProperty('pointer-events', 'none');
-        leavingEl.style.setProperty('pointer-events', 'none');
+        leavingEl?.style.setProperty('pointer-events', 'none');
       })
       .afterAddWrite(() => {
         enteringEl.style.removeProperty('pointer-events');
-        leavingEl.style.removeProperty('pointer-events');
+        leavingEl?.style.removeProperty('pointer-events');
       });
 
     if (leavingEl && navEl) {

core/src/utils/transition/md.transition.ts

@@ -27,11 +27,11 @@ export const mdTransitionAnimation = (_: HTMLElement, opts: TransitionOptions):
        * when double tapping the ion-back-button.
        */
       enteringEl.style.setProperty('pointer-events', 'none');
-      leavingEl.style.setProperty('pointer-events', 'none');
+      leavingEl?.style.setProperty('pointer-events', 'none');
     })
     .afterAddWrite(() => {
       enteringEl.style.removeProperty('pointer-events');
-      leavingEl.style.removeProperty('pointer-events');
+      leavingEl?.style.removeProperty('pointer-events');
     });
 
   // animate the component itself