fix(core): check for swiper.el in destroy queue

fixes #7530

Author: nolimits4web

src/core/classes/removeClasses.mjs

@@ -1,6 +1,7 @@
 export default function removeClasses() {
   const swiper = this;
   const { el, classNames } = swiper;
+  if (!el || typeof el === 'string') return;
 
   el.classList.remove(...classNames);
   swiper.emitContainerClasses();

src/core/core.mjs

@@ -655,8 +655,12 @@ class Swiper {
     // Cleanup styles
     if (cleanStyles) {
       swiper.removeClasses();
-      el.removeAttribute('style');
-      wrapperEl.removeAttribute('style');
+      if (el && typeof el !== 'string') {
+        el.removeAttribute('style');
+      }
+      if (wrapperEl) {
+        wrapperEl.removeAttribute('style');
+      }
       if (slides && slides.length) {
         slides.forEach((slideEl) => {
           slideEl.classList.remove(
@@ -680,7 +684,9 @@ class Swiper {
     });
 
     if (deleteInstance !== false) {
-      swiper.el.swiper = null;
+      if (swiper.el && typeof swiper.el !== 'string') {
+        swiper.el.swiper = null;
+      }
       deleteProps(swiper);
     }
     swiper.destroyed = true;

src/core/events/index.mjs

@@ -15,6 +15,7 @@ const events = (swiper, method) => {
   const capture = !!params.nested;
   const domMethod = method === 'on' ? 'addEventListener' : 'removeEventListener';
   const swiperMethod = method;
+  if (!el || typeof el === 'string') return;
 
   // Touch Events
   document[domMethod]('touchstart', swiper.onDocumentTouchStart, { passive: false, capture });

src/modules/a11y/a11y.mjs

@@ -364,9 +364,11 @@ export default function A11y({ swiper, extendParams, on }) {
     const document = getDocument();
     document.removeEventListener('visibilitychange', onVisibilityChange);
     // Tab focus
-    swiper.el.removeEventListener('focus', handleFocus, true);
-    swiper.el.removeEventListener('pointerdown', handlePointerDown, true);
-    swiper.el.removeEventListener('pointerup', handlePointerUp, true);
+    if (swiper.el && typeof swiper.el !== 'string') {
+      swiper.el.removeEventListener('focus', handleFocus, true);
+      swiper.el.removeEventListener('pointerdown', handlePointerDown, true);
+      swiper.el.removeEventListener('pointerup', handlePointerUp, true);
+    }
   }
 
   on('beforeInit', () => {

src/modules/autoplay/autoplay.mjs

@@ -238,8 +238,10 @@ export default function Autoplay({ swiper, extendParams, on, emit, params }) {
   };
 
   const detachMouseEvents = () => {
-    swiper.el.removeEventListener('pointerenter', onPointerEnter);
-    swiper.el.removeEventListener('pointerleave', onPointerLeave);
+    if (swiper.el && typeof swiper.el !== 'string') {
+      swiper.el.removeEventListener('pointerenter', onPointerEnter);
+      swiper.el.removeEventListener('pointerleave', onPointerLeave);
+    }
   };
 
   const attachDocumentEvents = () => {