- `next.cliOutput` will only refer to build time logs, so this
particular assertion won't work
- Drive-by refactor for it to use `retry` instead of `check`
Verified this passes when deployed
Closes [#66650](https://github.com/vercel/next.js/issues/66650)
Closes NEXT-3520
### What?
- Make Link not throw during prefetch if it received an invalid `href`
(see [#66650](https://github.com/vercel/next.js/issues/66650))
- Throw in dev mode if an invalid link was passed to `router.prefetch`
-- this matches current prod behavior
- (previously, we'd immediately exit out of `router.prefetch`, so the
user would see no indication that this'd fail in prod)
### Why?
If an invalid URL was passed to `<Link>`, the whole app would crash and
show "A client-side exception occurred". A failed prefetch should not
bring down the whole app.
Note that This preserves the current behavior of explicit
`router.prefetch(url)` throwing an error if `url` is invalid. We may
want to adjust this in the future, but that could be considered a
breaking change, so I'm leaving it out for now. This only affects
`Link`, which was intended to catch any errors thrown from
`router.prefetch`, but that bit was accidentally broken.
### What
Add new test case where a named export from client component is being
exported as page
### Why
We found this case while investigating the errors triggered introduced
by #66286 , adding this test to avoid future regression
To assist with the development and testing of the new partial
prerendering (PPR) paradigm, this introduces a stop-gap solution to let
us verify issues with pages in preview and production environments if
enabled. When a Next.js app is built and ran with the
`__NEXT_EXPERIMENTAL_STATIC_SHELL_DEBUGGING=1` environment variable,
pages that have PPR enabled in production and preview environments can
have only their static shell served when accessed with a
`?__nextppronly=1` query parameter.
If your project is not using PPR, it will not change anything. If a page
is accessed in production or development with the query parameter but
PPR is not enabled, it will not change anything. Tests have been added
to validate that going forward.
### What
Optimizing the static generation for dynamic metadata routes
If you're not using `generateSitemaps()` or `generateSitemaps()`, you
don't need to change any file conventions.
If you're using multi sitemap routes, make sure the returned `id`
properties from `generateSitemaps()` don't need to contain `.xml`, since
we'll always append one for you.
Analyzing the exports of metadata routes and determine if we need to
make them as dynamic routes.
### Why
Previously, users are struggling with the multi routes of sitemap or
images.
For sitemap, the `.xml` extension in url doesn't get appended
consistently to the multi sitemap route between dev and prod.
For image routes, the generated image routes are always dynamic routes
which cannot get static optimized.
The reason is that we need to always generate a catch-all route (such as
`/icon/[[...id]]` to handle both single route case (e.g. without
`generateImageMetadata`, representing url `/icon`) or multi route (e.g.
with `generateImageMetadata`, representing url `/icon/[id]`), only
catch-all routes can do it. This approach fail the static optimization
and make mapping url pretty difficult as parsing the file to check the
module exports has to be done before it.
#### Benifits
For image routes urls, this approach could help on static generation
such as single `/opengraph-image` route can be treated as static, and
then it can get static optimized if possible.
**Before**: `/opengraph-image/[[...id]]` cannot be optimized
**After**: single route `/opengraph-image` and multi-route
`/opengraph-image/[id]` are both possible to be statically optimized
For sitemap, since we removed appending `.xml` for dynamic routes, it’s
hard for users to have `/sitemap.xml` url with dynamic route convention
`sitemap.js` . But users desire smooth migration and flexibility.
**Before**: In v15 rc we removed the `.xml` appending that `sitemap.js`
will generate url `/sitemap` makes users hard to migrate, as users need
to re-submit the new sitemap url.
**After**: Now we'll consistently generate the `.xml`. Single route will
become `/sitemap.xml`, and multi route will become `/sitemap/[id].xml`.
It's still better than v15 as the urls generation is consistent, no
difference between dev and prod.
Here's the url generation comparsion
#### Before
All the routes are dynamic which cannot be optimized, we only had a
hacky optimization for prodution build multi-routes sitemap routes
| | only default export | `export generateImageMetadata()` | `export
generateSitemaps()` |
| -- | -- | -- | -- |
| opengraph-image.js | /opengraph-image/[[...id]] |
/opengraph-image[[...id]]/ | /opengraph-image/[[...id]] |
| sitemap.js | /sitemap/[[...id]] | /sitemap/[[...id]] | dev:
`/sitemap/[[...id]]` prod: `/sitemap/[id]` |
#### After
Most of the single route will are to get statically optimized now, and
the multi-routes sitemap are able to get SSG now
| | only default export | `export generateImageMetadata()` | `export
generateSitemaps()` |
| -- | -- | -- | -- |
| opengraph-image.js | /opengraph-image | /opengraph-image/[id] | - |
| sitemap.js | /sitemap.xml | - | /sitemap/[id].xml |
Next.js will have less overhead of mapping urls, we can easily multiply
the urls generation simply based on file conventions.
x-ref: feedback from #65507Closes#66232
### Why?
Importing `tailwind/tailwind.css` is not possible right now with
turbopack, and there's no reason it needs to be marked as external.
### How?
Closes PACK-3013
Fixes#64837
### What
Keep `test/e2e/app-dir/metadata-dynamic-routes/index.test.ts` with
successful build cases, move the dev error tests into separate test
### Why
x-ref:
https://github.com/vercel/next.js/actions/runs/9429301722/job/25975574075?pr=66286
Before the moving the tests, the error is flaky with turbopack since the
error will fail the hmr. Error observed with turbopack when seeing build
failed cases. So I moved the tests into the separate dev tests, running
inside sandboxes. Then each error test doesn't effect each other.
```
⨯ ./app/metadata-base/unset/icon--metadata.js:1:1
Module not found: Can't resolve './icon.tsx'
> 1 | import { generateImageMetadata } from "./icon.tsx"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2 | import { fillMetadataSegment } from 'next/dist/lib/metadata/get-metadata-route'
3 |
4 | const imageModule = { generateImageMetadata }
```
### What
Remove creating client proxy for each ESM export, instead for ESM we
create a CJS module proxy for itself and access the property with export
name as the actual export.
### Why
`proxy` is the module proxy that we treat the module as a client
boundary.
For ESM, we access the property of the module proxy directly for each
export.
This is bit hacky that treating using a CJS like module proxy for ESM's
exports,
but this will avoid creating nested proxies for each export. It will be
improved in the future.
Notice that for `next/dynamic`, if you're doing a dynamic import of
client component in server component, and trying to access the named
export directly, it will error. Instead you need to align the dynamic
import resolved value wrapping with a `default:` property (e.g. `{
default: resolved }`) like what `React.lazy` accepted.
Revert #57301Fixes#66212
x-ref:
[slack](https://vercel.slack.com/archives/C04DUD7EB1B/p1716897764858829)
During navigations, the `FlightDataPath` property from the server
response can be an array if there are multiple parallel routes (eg,
`children` and `slot`). When we apply server response to the router
cache, we might call `applyFlightData` for each segment path, which will
copy existing cache values and insert new ones depending on what
changed.
However, the `existingCache` argument that we pass to this function is
the cache at the start of the navigation. That means subsequent calls to
`applyFlightData` will reference the cache _before_ updates are made to
it. This will cause it to erroneously think it needs to lazy fetch for
missing data.
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When checking which segment(s) need to be refreshed, we currently
compare the current page URL with the segment's refresh marker.
We should inspect the `mutable.canonicalUrl` value first since that's
the URL we're changing to, followed by `state.canonicalUrl` as a
fallback (indicating that there's no URL change pending). This is
because the server action handler will receive a redirect URL prior to
`location.pathname` being updated, so the router will incorrectly think
it needs to refresh the data for the page we're going to.
Closes NEXT-3500
This flag remained experimental because the IPC implementation didn't
play nicely with requests containing large payloads, due to it being
stringified as GET parameters. This branching logic also poses
challenges for some upcoming work related to detecting IO.
This removes the handling for the
`experimental.staticWorkerRequestDeduping` flag which we can revisit in
the future with a sounder approach. This also cleans up some of the IPC
server utilities as it wasn't in use anywhere else.
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### How?
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### What & Why
Fixes NEXT-3498
Fixed loading shows up and disappear during client navigation, when you
defined `prefetch` is enabled and slow `generateMetadata` is defined. In
#64532, where in layout-router, we removed the place of infinite
suspense, adding it back so that the app can still remain suspensy
during navigation.
#### Behavior before fix
Prefetch -> Link Navigation -> Show `loading.js` -> RSC payload fetched
(no page content) -> the page content will display later when the
promise is resolved
#### Behavior after the fix
Prefetch -> Link Navigation -> Show `loading.js` -> RSC payload fetched
-> suspensy page content still triggering `loading.js` -> display the
resolved page content when the promise is resolved
---------
Co-authored-by: Zack Tanner <1939140+ztanner@users.noreply.github.com>
When `router.refresh` or a server action creates a new `CacheNode` tree,
we were erroneously not copying over the `loading` segment in the new
tree. This would cause the subtree to be remounted as the loading
segment switched from having a Suspense boundary to not having one.
Fixes#66029Fixes#66499
### What?
* order of CSS between layout and page
* order of CSS between page and next/dynamic
### Why?
### How?
* overrides webpack CSS chunk loading to use react CSS loading to allow
them to share the order
This takes the `layerAssets` property from the previous PR and actually
renders it, replacing the previous style handling. This ensures that
when multiple page segments are rendered on screen, all of their
associated CSS files are loaded. The existing `findHeadInCache` method
only ever returns a single head node, which means it’d miss stylesheets.
Fixes#59308Fixes#63465
This adds details for every ISR cache request if the page being
requested supports PPR. If it does, it'll attempt to load the
`.prefetch.rsc` payload instead of the `.rsc` payload. This corrects a
bug that was present in deployed environments.
This additionally refactors the `isAppPPREnabled` out of most of the
application, as it's only used to determine if we should add to the
`prefetchDataRoute` fields in the `prerender-manifest.json`. To support
loading the prefetch file or not, we pass the `isRoutePPREnabled`
through with the cache get/set operations instead.
x-slack-ref:
https://vercel.slack.com/archives/C075MSFK9ML/p1717094328986429
In #60645, dynamic access tracking was refactored but we erroneously
stopped tracking dynamic access in route handlers. Request proxying, as
well as tracking segment level configs (such as `export const dynamic =
'force-dynamic'`), were only enabled during static generation. This was
an unintended breaking change that consequently caused dynamic access to
not properly bail from data cache in various circumstances.
This adds some more rigorous testing for route handlers, as this seems
to be a fairly large gap in our fetch cache testing currently.
This PR is easiest to review with [whitespace
disabled](https://github.com/vercel/next.js/pull/66446/files?w=1).
### What
Change the metadataBase missing warning for all cases to only warn in
standalone mode or the non-vercel deployment.
### Why
In vercel deployments, previous concern was that you might not discover
you missed that metadataBase when you deploy. But now we have sth
fallback on production deployments. So we only need to warn in
non-vercel deployment.
Standalone is usually for self-hoist, we always warn users to set the
`metadataBase` to make sure the domain can be properly resolved.
[x-ref](https://vercel.slack.com/archives/C03S8ED1DKM/p1716926825853389?thread_ts=1716923373.484329&cid=C03S8ED1DKM)
When the router encounters a `stale` cache entry, it clears the `rsc`
data so that it can be fetched in render. All navigations (even just for
hash fragments) flow through the navigation reducer, which has logic to
discard any existing cache entries when the cache is stale.
This bug has become more obvious after removing the default 30s cache,
which would previously have masked it.
This updates the existing handling that clears flight data to not do so
if only the hash changes as there would be no server changes in this
case.
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This modifies the patched fetch implementation to better handle when
called within an `unstable_cache` callback. In these callbacks, it
should not throw an error related to dynamic access.
This replaces the verbose `trackDynamicFetch` instead with
`markCurrentScopeAsDynamic` which already has support for checking if
inside an unstable cache context. It also has been adjusted to be a
no-op when `export const dynamic = "force-static"`, further simplifying
the code within the patch fetch implementation.
### What
Use `next-flight-loader` to transform the client components into client
reference in middleware and instrumentation.
Add related required webpack aliases, such as alias for
`react-server-dom-webpack`
### Why
issue reported in
https://github.com/vercel/next.js/pull/65424#issuecomment-2128902585
### What?
Because `createMultiHtmlMatcher` does not use `await` keyword internally
and is not an async function, all `await` in front of the match function
returned from `createMultiHtmlMatcher` was removed in
`test/e2e/app-dir/metadata/metadata.test.ts`.
The JSDoc for `createMultiHtmlMatcher` was also modified.
Co-authored-by: Jiachi Liu <inbox@huozhi.im>
Using the hostname `::` enables dual-stack support. This prevents
`ECONNREFUSED` errors when running tests locally, and `localhost` being
resolved to `::1` (IPv6) instead of `127.0.0.1` (IPv4).
Old logic from the pages router was previously being hit during
development. This was more apparent when PPR was enabled as it was
mixing dynamic + static rendering in development which propagated to
errors. This change ensures that requests that are made with `RSC: 1`
are not marked as `/_next/data` URL's, and don't use the same logic
paths.
Previously it was a bit confusing because we used the variable
`isDataReq` in a few places that made it hard to tell what it was
referring to. In this case, the `isDataReq` is actually only used by the
pages router. This renames the `isDataReq` to `isNextDataRequest` to
make it clearer, as well as refactors to ensure that it's not used in
the paths for app routes.
Also to better represent the rendering modes the `supportsDynamicHTML`
variable was renamed to `supportsDynamicResponse`.
Fixes#66241
Revert the revert in #66049
It was erroring in pages api with importing `react-dom/server` as this
is disallowed in app but shouldn't be in pages. It's caused by we're
validating middleware layer as server components but edge pages api is
still bundled in the same layer, where we shouldn't apply the check.
* Separate the api in api layers, and while handling middleware
warnings, checking api layer as well
* No need to check layers while handling externals in edge compiler
* Found a bug that we shouldn't check if `config.transpilePackages` is
defined then we enable `externalDir`, removed that condition. It fails
the telemetry tests case build with code change from this PR.
Add more tests for pages dir and middleware
| | `react` condition | `react-dom/server` condition |
| ---- | ---- | ---- |
| middleware (edge) | react-server | not allowed, failed with dev/build
checks |
| pages/api edge | default condition | default condition |
| pages/api node | default condition | default condition |
This PR changes the `getWaitUntil` logic to always check if the platform
provided a request context with a `waitUntil` implementation (via [the
`@next/request-context`
symbol](05e6b82576/packages/next/src/server/after/wait-until-builtin.ts (L12)))
, regardless of minimalMode or runtime.
Previously, we wouldn't check the context at all unless `minimalMode`
was set, and defaulted `waitUntil` to a noop otherwise. This would make
integration more difficult for providers who don't use `minimalMode`,
because they'd have no way to inject their `waitUntil` implementation.
Ensures that app routes (like the `favicon.ico` added in the test case
in this PR which is represented as an app route) do not have a prefetch
RSC also attached.
## Background
Previously we introduced automatic caching for `fetch` based on certain
heuristics that were a bit tricky to grasp all scenarios. The scenarios
we would automatically cache were no dynamic data access before the
fetch call e.g. `headers()` or `cookies()`, the fetch call is inside of
a dynamic page e.g. `POST` method or `export const revalidate = 0` page
and the fetch is a non-`GET` request or has `Authorization` or `Cookie`
headers, or the fetch had `cache: 'no-store' | 'no-cache'` or
`revalidate: 0`.
## New Behavior
By default fetches will no longer automatically be cached. Instead they
need to be opted-in to caching via `export const fetchCache =
'default-cache' | 'force-cache',` `next: { revalidate: false or value >
0 }` or `cache: 'force-cache' | 'default-cache'`.
When the fetch call is automatically skipping the cache it won't impact
the page level ISR cacheability although if a fetch call manually
specifies `cache: 'no-store'` or `revalidate: 0` it will still bail from
the page being statically generated as it was before.
To achieve the previous behavior of automatic fetch caching all that
needs to be added is `export const fetchCache = 'default-cache'` in the
root layout(s) of your project.
