update

resources/web/include/swiper/modules/manipulation/methods/prependSlide.js

@@ -0,0 +1,34 @@
+export default function prependSlide(slides) {
+  const swiper = this;
+  const {
+    params,
+    $wrapperEl,
+    activeIndex
+  } = swiper;
+
+  if (params.loop) {
+    swiper.loopDestroy();
+  }
+
+  let newActiveIndex = activeIndex + 1;
+
+  if (typeof slides === 'object' && 'length' in slides) {
+    for (let i = 0; i < slides.length; i += 1) {
+      if (slides[i]) $wrapperEl.prepend(slides[i]);
+    }
+
+    newActiveIndex = activeIndex + slides.length;
+  } else {
+    $wrapperEl.prepend(slides);
+  }
+
+  if (params.loop) {
+    swiper.loopCreate();
+  }
+
+  if (!params.observer) {
+    swiper.update();
+  }
+
+  swiper.slideTo(newActiveIndex, 0, false);
+}