mirror of
https://github.com/hanzoai/next.js.git
synced 2026-09-24 17:00:51 +00:00
Andrew ClarkandGitHub
27e225f468
With `cacheComponents` + `partialPrefetching`, navigating to an already-prefetched route with a dynamic `generateMetadata` left `document.title` permanently empty until a hard reload. The prefetch cached the head as complete using the server's `isHeadPartial` flag, which is unreliable under Cache Components. Derive the head's partiality from `isResponsePartial` instead, as segment data already does, so a dynamic head is fetched and applied on navigation while a fully static head stays complete. Fixing the flag exposed a latent issue in the prefetch scheduler: during a speculative prefetch, the head was unconditionally runtime-prefetched, which previously went unnoticed because the head was mismarked as complete. The head is now runtime-prefetched only when a segment in the new part of the tree is a candidate for runtime prefetching — it rides along with that request rather than spawning a standalone one. If nothing in the new part of the tree is a runtime prefetch candidate, the head is fetched during the navigation instead. This makes the scheduler's metadata-only request path dead code, so it's removed. Fixes #95268. <!-- NEXT_JS_LLM_PR -->
18 lines
594 B
TypeScript
18 lines
594 B
TypeScript
import { ReactNode } from 'react'
|
|
|
|
export const metadata = {
|
|
// The root layout provides a default title and a template. While a child
|
|
// route's dynamic metadata is still streaming in, the title should fall back
|
|
// to this default (or retain the previous route's title) — it must never be
|
|
// dropped to an empty string (which makes the browser tab show the URL).
|
|
title: { default: 'Home Default', template: '%s | Site' },
|
|
}
|
|
|
|
export default function RootLayout({ children }: { children: ReactNode }) {
|
|
return (
|
|
<html lang="en">
|
|
<body>{children}</body>
|
|
</html>
|
|
)
|
|
}
|