Setting the file. One moment.
Skill 05 · Vercel React View Transitions
Subchapter 5.3
references/nextjs.mdMarkdown10 KBView on GitHub
<ViewTransition> works in the App Router with no configuration. The bundled React channel includes it, and Next.js navigations run in React Transitions. Do not add the old experimental.viewTransition flag or install react@canary into a Next.js app.
Read the current Next.js View Transitions guide (opens in a new tab) and the matching guide under node_modules/next/dist/docs/ before editing. The installed version is authoritative for flags and API signatures.
Because every link click is a transition, any VT with default="auto" fires on every navigation — use default="none" to prevent competing animations.
For unexpected or broken animation behavior, see troubleshooting.md.
When following implementation.md, apply these additions:
Step 4: Use transitionTypes on <Link> — see The transitionTypes Prop. If the animation depends on dynamic destination content, also see When Content Must Be Ready.
After Step 6: For same-route dynamic segments (e.g., /collection/[slug]), use the key + name + share pattern — see Same-Route Dynamic Segment Transitions.
Do NOT add a layout-level VT wrapping {children} if pages have their own VTs. A nested VT skips its own enter/exit only when it mounts or unmounts as one unit with a parent VT, which is exactly what a layout VT wrapping {children} causes — page-level enter/exit will silently not work. Remove the layout VT entirely. Nesting is otherwise fine and sometimes required: a child VT inside a persistent parent VT fires enter/exit normally, and two nested boundaries are the intended shape for shared elements inside list items.
A bare <ViewTransition> in layout works only if pages have no VTs of their own.
Layouts persist across navigations — enter/exit only fire on initial mount, not on route changes. Don’t use type-keyed maps in layouts. Because layouts persist, chrome hosted in one (nav, sidebar, player) keeps its state across navigations for free — no Activity needed. Reserve Activity for in-page show/hide (see Composing with Activity).
No wrapper component needed, works in Server Components:
<Link href="/products/1" transitionTypes={['transition-to-detail']}>
View Product
</Link>Replaces the manual pattern of onNavigate + startTransition + addTransitionType + router.push(). Reserve manual startTransition for non-link interactions (buttons, forms).
Availability: transitionTypes shipped in Next.js 16.2.0 (it is not gated on the experimental.viewTransition flag). If unavailable, use startTransition + addTransitionType + router.push() (see Programmatic Navigation). To check: grep -r "transitionTypes" node_modules/next/dist/ — if no results, fall back to programmatic navigation.
A page transition can animate whatever Next.js renders during navigation, including a loading fallback. A shared content-to-content morph only works when the incoming content is ready as the navigation commits; content that has not rendered yet cannot form the incoming half of the pair.
When an animation depends on dynamic destination content, use Next.js prefetching and caching to make that content available ahead of time. <Link> automatically prefetches in production, but the default behavior for dynamic routes may only prefetch a shell or loading boundary. Set prefetch={true} to prefetch the full route, and cache the data needed to render the shared content.
<Link href={nextHref} prefetch={true} transitionTypes={['nav-forward']}>
Next
</Link>With Cache Components, put reusable route data in a cached scope such as use cache so prefetching can include it. If the destination remains behind an unresolved Suspense boundary, the route transition animates the fallback instead. The content resolves in a separate Suspense transition without the original nav-forward or nav-back type, so give that content its own reveal animation when needed.
Verify directional transitions in a production build with a cold client cache. Development mode does not run automatic <Link> prefetching.
See the Next.js View Transitions guide (opens in a new tab) and Prefetching guide (opens in a new tab).
'use client';
import { useRouter } from 'next/navigation';
function DetailButton({ href }: { href: string }) {
const router = useRouter();
return (
<button onClick={() => router.push(href, { transitionTypes: ['nav-forward'] })}>
Open
</button>
);
}The transitionTypes option adds the types inside the router’s navigation Transition. Use startTransition + addTransitionType for non-navigation state updates, or as a fallback on Next.js versions without the router option.
For search/sort/filter that re-renders on the server (via URL params), use startTransition + router.replace. VTs activate because the state update is inside startTransition:
'use client';
import { useRouter } from 'next/navigation';
import { startTransition } from 'react';
function SortControl() {
const router = useRouter();
function handleSort(sort: string) {
startTransition(() => {
router.replace(`?sort=${sort}`);
});
}
return <button onClick={() => handleSort('newest')}>Newest</button>;
}List items wrapped in <ViewTransition key={item.id}> will animate reorder. This is the server-component alternative to the client-side Searchable Grid pattern.
For immediate control feedback while the route commits, use useOptimistic for the button state but keep the animated list tied to the committed sort value. See Exclude Elements with useOptimistic.
The generalized sliding indicator (Sliding Indicator) driven by navigation instead of local state: tabs are <Link>s, active comes from the URL (a server prop), and useOptimistic slides the indicator instantly while the route commits. Key the mounted indicator to committed active so the bar lands where navigation actually settles.
'use client';
import Link from 'next/link';
import { useOptimistic, useTransition, ViewTransition } from 'react';
export function Tabs({ tabs, active, indicatorName = 'tab-indicator' }) {
const [optimisticActive, setOptimisticActive] = useOptimistic(active);
const [, startTransition] = useTransition();
return (
<nav>
{tabs.map(t => (
<Link key={t.value} href={t.href} scroll={false}
aria-current={optimisticActive === t.value ? 'page' : undefined}
onNavigate={() => startTransition(() => setOptimisticActive(t.value))}>
<span>{t.label}</span>
{active === t.value && (
<ViewTransition name={indicatorName} share="tab-underline">
<span className="active-underline" aria-hidden />
</ViewTransition>
)}
</Link>
))}
</nav>
);
}Directional slides + Suspense reveals coexist because they fire at different moments. Place the directional VT in the page component (not layout):
<ViewTransition
enter={{ "nav-forward": "slide-from-right", default: "none" }}
exit={{ "nav-forward": "slide-to-left", default: "none" }}
default="none"
>
<div>
<Suspense fallback={<ViewTransition exit="slide-down"><Skeleton /></ViewTransition>}>
<ViewTransition enter="slide-up" default="none"><Content /></ViewTransition>
</Suspense>
</div>
</ViewTransition>Next.js loading.tsx is an implicit <Suspense> boundary. Wrap the skeleton in <ViewTransition exit="..."> in loading.tsx, and the content in <ViewTransition enter="..." default="none"> in the page:
// loading.tsx
<ViewTransition exit="slide-down"><PhotoGridSkeleton /></ViewTransition>
// page.tsx
<ViewTransition enter="slide-up" default="none"><PhotoGrid photos={photos} /></ViewTransition>Same rules as explicit <Suspense>: use simple string props (not type maps) since Suspense reveals fire without transition types.
// List page
{products.map((product) => (
<Link key={product.id} href={`/products/${product.id}`} transitionTypes={['nav-forward']}>
<ViewTransition name={`product-${product.id}`}>
<Image src={product.image} alt={product.name} width={400} height={300} />
</ViewTransition>
</Link>
))}
// Detail page — same name
<ViewTransition name={`product-${product.id}`}>
<Image src={product.image} alt={product.name} width={800} height={600} />
</ViewTransition>If the pair’s share is type-keyed (or classed via CSS that expects a type), every <Link> between the two views must carry the type via transitionTypes — a plain link click resolves the share map’s default, and if that’s none the morph silently never fires.
When navigating between dynamic segments of the same route (e.g., /collection/[slug]), the router swaps subtrees keyed by the segment value rather than doing a plain unmount/mount — enter/exit don’t fire reliably. Use key + name + share:
<Suspense fallback={<Skeleton />}>
<ViewTransition key={slug} name="collection-content" share="auto" default="none">
<Content slug={slug} />
</ViewTransition>
</Suspense>key={slug} forces unmount/remount on changename pairs the outgoing and incoming containers; share="auto" creates the crossfade<Suspense> (without keying Suspense) keeps old content visible during loading<ViewTransition> works in both Server and Client Components<Link transitionTypes> works in Server Components — no 'use client' neededrouter.push(..., { transitionTypes }), addTransitionType, and startTransition require Client Components