fix: SSR hydration issue

src/components/Carousel/Carousel.ts

@@ -15,8 +15,6 @@
   ComponentInternalInstance,
   watchEffect,
   shallowReactive,
-  pushScopeId,
-  getCurrentInstance,
 } from 'vue'
 
 import { ARIA as ARIAComponent } from '@/components/ARIA'
@@ -122,6 +120,9 @@
     const clonedSlidesCount = computed(() => Math.ceil(config.itemsToShow) + 1)
 
     function updateBreakpointsConfig(): void {
+      if (!mounted.value) {
+        return
+      }
       // Determine the width source based on the 'breakpointMode' config
       const widthSource =
         (fallbackConfig.value.breakpointMode === 'carousel'
@@ -265,12 +266,9 @@
       })
     }
 
-    updateBreakpointsConfig()
     onMounted((): void => {
       mounted.value = true
-      if (fallbackConfig.value.breakpointMode === 'carousel') {
-        updateBreakpointsConfig()
-      }
+      updateBreakpointsConfig()
       initAutoplay()
 
       if (root.value) {
@@ -565,6 +563,7 @@
       slidesCount,
       viewport,
       slides,
+      clonedSlidesCount,
       scrolledIndex,
       currentSlide: currentSlideIndex,
       maxSlide: maxSlideIndex,
@@ -663,7 +662,7 @@
      */
     const trackTransform: ComputedRef<string> = computed(() => {
       // Calculate the scrolled index with wrapping offset if applicable
-      const cloneOffset = config.wrapAround ? clonedSlidesCount.value : 0
+      const cloneOffset = config.wrapAround && mounted.value ? clonedSlidesCount.value : 0
 
       // Determine direction multiplier for orientation
       const directionMultiplier = isReversed.value ? -1 : 1
@@ -702,13 +701,9 @@
       const addonsElements = slotAddons?.(data) || []
 
       if (config.wrapAround) {
-        // Ensure scoped CSS tracks properly
-        const scopeId = output.length > 0 ? output[0].scopeId : null
-        pushScopeId(scopeId)
         const toShow = clonedSlidesCount.value
         const slidesBefore = createCloneSlides({ slides, position: 'before', toShow })
         const slidesAfter = createCloneSlides({ slides, position: 'after', toShow })
-        pushScopeId(getCurrentInstance()!.vnode.scopeId)
         output = [...slidesBefore, ...output, ...slidesAfter]
       }
 

src/components/Carousel/Carousel.types.ts

@@ -19,6 +19,7 @@ export type InjectedCarousel = Reactive<{
   viewport: Ref<Element | null>
   slides: ShallowReactive<Array<ComponentInternalInstance>>
   slidesCount: ComputedRef<number>
+  clonedSlidesCount: ComputedRef<number>
   currentSlide: Ref<number>
   scrolledIndex: Ref<number>
   maxSlide: ComputedRef<number>

src/utils/createCloneSlides.ts

@@ -1,6 +1,4 @@
-import { cloneVNode, ComponentInternalInstance, h } from 'vue'
-
-import { Slide } from '@/components/Slide'
+import { cloneVNode, ComponentInternalInstance, VNode } from 'vue'
 
 type CreateCloneSlidesArgs = {
   slides: Array<ComponentInternalInstance>
@@ -9,24 +7,27 @@ type CreateCloneSlidesArgs = {
 }
 
 export function createCloneSlides({ slides, position, toShow }: CreateCloneSlidesArgs) {
-  const clones = []
+  const clones: VNode[] = []
   const isBefore = position === 'before'
   const start = isBefore ? -toShow : 0
   const end = isBefore ? 0 : toShow
 
+  if (slides.length <= 0) {
+    return clones
+  }
+
   for (let i = start; i < end; i++) {
-    const index = isBefore ? i : slides.length > 0 ? i + slides.length : i + 99999
+    const index = isBefore ? i : i + slides.length
     const props = {
       index,
       isClone: true,
       id: undefined, // Make sure we don't duplicate the id which would be invalid html
       key: `clone-${position}-${i}`,
     }
-    clones.push(
-      slides.length > 0
-        ? cloneVNode(slides[(i % slides.length + slides.length) % slides.length].vnode, props)
-        : h(Slide, props)
-    )
+    const vnode = slides[((i % slides.length) + slides.length) % slides.length].vnode
+    const clone = cloneVNode(vnode, props)
+    clone.el = null
+    clones.push(clone)
   }
 
   return clones

tests/integration/__snapshots__/carousel.spec.ts.snap

@@ -36,7 +36,7 @@ exports[`SSR Carousel > renders server side properly 1`] = `
 </div>"
 `;
 
-exports[`SSR Carousel > renders server side properly 2`] = `"<div id="app"><section class="carousel is-ltr" style="" dir="ltr" aria-label="Gallery" tabindex="0"><div class="carousel__viewport"><ol class="carousel__track" style="transform:translateX(0px);"><li style="width:50%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><li style="width:50%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><li style="width:50%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><!--[--><li style="width:50%;" class="carousel__slide carousel__slide--visible carousel__slide--prev" id="v-0">1 <input type="text"></li><li style="width:50%;" class="carousel__slide carousel__slide--visible carousel__slide--active" id="v-1">2 <input type="text"></li><li style="width:50%;" class="carousel__slide carousel__slide--visible carousel__slide--next" id="v-2">3 <input type="text"></li><li style="width:50%;" class="carousel__slide" id="v-3">4 <input type="text"></li><li style="width:50%;" class="carousel__slide" id="v-4">5 <input type="text"></li><!--]--><li style="width:50%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><li style="width:50%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><li style="width:50%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li></ol></div><!--[--><!--[--><button type="button" aria-label="Navigate to previous slide" title="Navigate to previous slide" class="carousel__prev"><svg class="carousel__icon" viewBox="0 0 24 24" role="img" aria-label="Arrow pointing to the left"><title>Arrow pointing to the left</title><path d="M15.41 16.59L10.83 12l4.58-4.59L14 6l-6 6 6 6 1.41-1.41z"></path></svg></button><button type="button" aria-label="Navigate to next slide" title="Navigate to next slide" class="carousel__next"><svg class="carousel__icon" viewBox="0 0 24 24" role="img" aria-label="Arrow pointing to the right"><title>Arrow pointing to the right</title><path d="M8.59 16.59L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.41z"></path></svg></button><!--]--><ol class="carousel__pagination"><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 1" aria-pressed="false" aria-controls="v-0" title="Navigate to slide 1"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button carousel__pagination-button--active" aria-label="Navigate to slide 2" aria-pressed="true" aria-controls="v-1" title="Navigate to slide 2"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 3" aria-pressed="false" aria-controls="v-2" title="Navigate to slide 3"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 4" aria-pressed="false" aria-controls="v-3" title="Navigate to slide 4"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 5" aria-pressed="false" aria-controls="v-4" title="Navigate to slide 5"></button></li></ol><!--]--><div class="carousel__liveregion carousel__sr-only" aria-live="polite" aria-atomic="true">Item 2 of 5</div></section></div>"`;
+exports[`SSR Carousel > renders server side properly 2`] = `"<div id="app"><section class="carousel is-ltr" style="" dir="ltr" aria-label="Gallery" tabindex="0"><div class="carousel__viewport"><ol class="carousel__track" style="transform:translateX(0px);"><!--[--><li style="width:50%;" class="carousel__slide carousel__slide--visible carousel__slide--prev" id="v-0">1 <input type="text"></li><li style="width:50%;" class="carousel__slide carousel__slide--visible carousel__slide--active" id="v-1">2 <input type="text"></li><li style="width:50%;" class="carousel__slide carousel__slide--visible carousel__slide--next" id="v-2">3 <input type="text"></li><li style="width:50%;" class="carousel__slide" id="v-3">4 <input type="text"></li><li style="width:50%;" class="carousel__slide" id="v-4">5 <input type="text"></li><!--]--></ol></div><!--[--><!--[--><button type="button" aria-label="Navigate to previous slide" title="Navigate to previous slide" class="carousel__prev"><svg class="carousel__icon" viewBox="0 0 24 24" role="img" aria-label="Arrow pointing to the left"><title>Arrow pointing to the left</title><path d="M15.41 16.59L10.83 12l4.58-4.59L14 6l-6 6 6 6 1.41-1.41z"></path></svg></button><button type="button" aria-label="Navigate to next slide" title="Navigate to next slide" class="carousel__next"><svg class="carousel__icon" viewBox="0 0 24 24" role="img" aria-label="Arrow pointing to the right"><title>Arrow pointing to the right</title><path d="M8.59 16.59L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.41z"></path></svg></button><!--]--><ol class="carousel__pagination"><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 1" aria-pressed="false" aria-controls="v-0" title="Navigate to slide 1"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button carousel__pagination-button--active" aria-label="Navigate to slide 2" aria-pressed="true" aria-controls="v-1" title="Navigate to slide 2"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 3" aria-pressed="false" aria-controls="v-2" title="Navigate to slide 3"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 4" aria-pressed="false" aria-controls="v-3" title="Navigate to slide 4"></button></li><li class="carousel__pagination-item"><button type="button" class="carousel__pagination-button" aria-label="Navigate to slide 5" aria-pressed="false" aria-controls="v-4" title="Navigate to slide 5"></button></li></ol><!--]--><div class="carousel__liveregion carousel__sr-only" aria-live="polite" aria-atomic="true">Item 2 of 5</div></section></div>"`;
 
 exports[`SSR Carousel > renders slotted server side properly 1`] = `
 "<div id="app">
@@ -59,7 +59,7 @@ exports[`SSR Carousel > renders slotted server side properly 1`] = `
 </div>"
 `;
 
-exports[`SSR Carousel > renders slotted server side properly 2`] = `"<div id="app"><section class="carousel is-ltr" style="" dir="ltr" aria-label="Gallery" tabindex="0"><div class="carousel__viewport"><ol class="carousel__track" style="transform:translateX(0px);"><li style="width:100%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><li style="width:100%;" class="carousel__slide carousel__slide--clone carousel__slide--prev" aria-hidden="true"></li><!--[--><!--[--><li style="width:100%;" class="carousel__slide carousel__slide--visible carousel__slide--active" id="v-0">1</li><li style="width:100%;" class="carousel__slide carousel__slide--next" id="v-1">2</li><li style="width:100%;" class="carousel__slide" id="v-2">3</li><li style="width:100%;" class="carousel__slide" id="v-3">4</li><li style="width:100%;" class="carousel__slide" id="v-4">5</li><!--]--><!--]--><li style="width:100%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li><li style="width:100%;" class="carousel__slide carousel__slide--clone" aria-hidden="true"></li></ol></div><!--[--><!--]--><div class="carousel__liveregion carousel__sr-only" aria-live="polite" aria-atomic="true">Item 1 of 5</div></section></div>"`;
+exports[`SSR Carousel > renders slotted server side properly 2`] = `"<div id="app"><section class="carousel is-ltr" style="" dir="ltr" aria-label="Gallery" tabindex="0"><div class="carousel__viewport"><ol class="carousel__track" style="transform:translateX(0px);"><!--[--><!--[--><li style="width:100%;" class="carousel__slide carousel__slide--visible carousel__slide--active" id="v-0">1</li><li style="width:100%;" class="carousel__slide carousel__slide--next" id="v-1">2</li><li style="width:100%;" class="carousel__slide" id="v-2">3</li><li style="width:100%;" class="carousel__slide" id="v-3">4</li><li style="width:100%;" class="carousel__slide" id="v-4">5</li><!--]--><!--]--></ol></div><!--[--><!--]--><div class="carousel__liveregion carousel__sr-only" aria-live="polite" aria-atomic="true">Item 1 of 5</div></section></div>"`;
 
 exports[`Wrap around Carousel.ts > renders wrapAround correctly 1`] = `
 "<section class="carousel is-ltr" dir="ltr" aria-label="Gallery" tabindex="0">