This refactors our handling of passing routing information to the render
logic via headers which is legacy from when we had separate routing and
render workers. Now this will just attach this meta in our normal
request meta handling which is more consistent and type safe.
This handles the case where a middleware rewrite causes us to fail to
resolve the correct dynamic route params for an action sent to a
prerendered ISR path since the matched path wouldn't be the original
source path like we expect and instead is the prerendered path so we
need to parse the params out instead.
---------
Co-authored-by: Zack Tanner <1939140+ztanner@users.noreply.github.com>
Users that experiment with PPR and might have seen #61798, or #62703, or
most recently #65483, may try the `__nextppronly=1` query param to debug
the static shell. This will lead to the following uncaught error and
blank page:
<img width="1045" alt="static shell debugging hydration error"
src="https://github.com/vercel/next.js/assets/761683/ed382d97-82ae-4a23-9930-bb4d4419e88e">
It might not be immediately obvious that javascript must be disabled to
see the static shell. To improve the DX in this scenario we can omit the
bootstrap script to skip hydration, and thus prevent the error. Then
debugging the static shell works even without disabling javascript in
the devtools.
<img width="1045" alt="static shell debugging without hydration"
src="https://github.com/vercel/next.js/assets/761683/57f6cb88-f5b4-473f-963f-7fda8c8e7f00">
In addition, we should add the closing body and html tags to the shell
so that a valid HTML document is returned.
`node_modules` gets ignored when deployed unless explicitly allowed, and
the regular install command will clobber what was in there.
This allowlists the `node_modules` directory and copies it into a new
folder, runs the install command, and then merges the patched
`node_modules` in so the patched modules are available in the test.
Only 1 test suite in this suite is failing and it's related to file
tracing, which should be fixed in a follow-up. For now this enables
deploy tests for everything else to make sure we don't regress.
This also simplifies the original test to not require stopping the
server & patching a file.
- Fixed redirects tests not working when deployed because they were
`POST` requests to a static page
- Skipped 404 test for a similar reason: a `POST` to the static not
found page is handled differently, and we won't have access to the
runtime logs anyway
- Refactored interception routes test to not rely on runtime logs
- Fixed revalidation test & removed comment about flakiness
<details>
<summary>Validated Run Summary</summary>
</details>
These 2 tests use an in-memory data store that won't be necessarily
shared across invocations of the lambda. This skips the tests that rely
on that functionality as testing it in `next start` should be
sufficient.
This test was only failing because `vercel logs` limit the output to 100
lines, and telemetry debugging was adding a lot of verbosity to the
build logs.
This bumps the log lines to a higher value to give some more breathing
room, and did a drive-by `check` -> `retry` refactor.
This disables tests that should not be run in a deployed environment,
because they use incompatible APIs or there's no reason to test them
outside of `next start`. Specifically disables for things like:
- Using `next.patchFile`, `next.renameFile`, etc.
- Attempting to use `next.cliOutput` to query runtime logs. When
deployed, these are only build-time logs.
[Latest Run](https://github.com/vercel/next.js/actions/runs/9483807368)
- `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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you follow the checklist sections below.
Choose the right checklist for the change(s) that you're making:
## For Contributors
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- Run `pnpm prettier-fix` to fix formatting issues before opening the
PR.
- Read the Docs Contribution Guide to ensure your contribution follows
the docs guidelines:
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- Related issues linked using `fixes #number`
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### Adding a feature
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understand the PR)
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conclusion
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- Add review comments if necessary to explain to the reviewer the logic
behind a change
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### Why?
### 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
