We've supported `export const config = { ... }` to sepecify `runtime`
etc. configs for pages under `app/` for a while. This PR is going to
drop it and only support `export const [config name] = [config value]`
per config
Add a warning if the legacy usage is detectd
Closes NEXT-1016
### What?
This PR ensures the jest configuration is json-serializable. It also
adds a bunch of typescript types.
### Why?
Jest requires that the configuration be json-serializable. See #47407
for details on the issues caused when it isn't. However, prior to this
commit, we were passing the entire next config as a property in the swc
jest transformer options. The next config includes some fields that are
not serializable, such as some functions.
### How?
In this PR we instead pluck the fields out of the next config that we
actually need and pass only those into the swc transformer.
This PR also adds a bunch of more precise typescript types where we were
previously just using `any`. This helps confirm that the configs are
being threaded through correctly. I think this type safety is enough to
confirm this commit and adding tests would just be redundant.
Closes NEXT-901
Fixes#47407
fix NEXT-901 ([link](https://linear.app/vercel/issue/NEXT-901))
---------
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Co-authored-by: Jiachi Liu <inbox@huozhi.im>
### What?
Rename originUrl to fetchUrl for clarity.
Also remove remove it from origin fetch annotation because the data is
redundant.
### Why?
- The word fetch better matches the other two parameters fetchType and
fetchIdx
- Because the fetch/origin URL is the actual URL being performed on the
origin fetch, it will always be duplicate data
### What?
* fix app dir chunking
* fix app dir 404s
* improve app dir performance
* rerender shadowportal on errors to re-add nextjs-portal to avoid empty
page
* inject polyfills before user code
* fix manifest generation
see also https://github.com/vercel/turbo/pull/4488
### Why?
App dir was very slow and lead to 404 errors
### How?
add included metadata to chunks to allow deduplicate chunk loads at
runtime
### What?
In environments where `FileSystemCache` is used, the cache for static
resources such as image files will be broken.
### Why?
Because `fs.readFile(path, 'utf8')` tries to read a file as a `string`.
### How?
Change to use `fs.readFile(path)` to always read files as binary
(`Buffer`).
### What?
This PR fixes misordered CSS `<link>` tags. CSS imports in inner layers
(e.g. a page) should always take precedence over outer layers (e.g. root
layout), but currently it's reversed.
### Why?
In layouts we usually define more general styles like globals, resets,
and layout specific things. And in inner layers and pages, things need
to be more detailed and override upper layers if there're any conflicts.
Previously we defined the component segment as
```tsx
<>
<Component {...props} />
{assets}
</>
```
which is necessary because of `findDOMNode` - if we put `assets` before
the component, we can't find the correct scrolling DOM and position for
that layer.
However, with `assets` being the last Float will receive the reversed
order of resources.
### How?
I changed the `createComponentTree` function to return a `Component` and
`assets` pair, so in the Layout Router they're no longer passed to the
scroll wrapper altogether but separately.
Closes NEXT-983
Fixes#47585, fixes#46347.
fix NEXT-656
---------
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This PR fixes parallel routes navigation with `prefetch={false}`. This
was broken because the optimistic tree created when navigating with
prefetching disabled resulted in a state where the router tree was
expecting an incorrect node to be rendered and suspended until the
imaginary data arrived.
The fix consists of updating the method that creates the optimistic tree
in order to bailout of the optimistic tree creation when there are
multiple parallel routes for the current node.
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fix#48122
link NEXT-1020
---------
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
This PR fixes a bug with interception where the rewritten path passed an
incorrect segment data on production, resulting in a 404.
The fix consists of moving the rewrite pre-processing step that rewrites
the dynamic segment from the originating path to when we actually
generate the rewrite. This is needed because that step does not run on
production. Now it does and signals correctly to the app-render that the
value for the segment can be determined from the path.
Also enables prod testing, which I had forgotten to enable.
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fix#48406
link NEXT-1017
While testing workflow changes noticed that when turborepo cache is
leveraged the `@next/env` types are missing causing unexpected failures
since the types aren't stored in the `dist` folder which is all that is
cached for the build step.
x-ref: https://github.com/vercel/next.js/commits/ijjk/update-ci-workflow
### What?
* Support `generateMetadata(props)` to dynamically generate multiple
metadata images at the same time
```js
// /app/opengraph-image.tsx
import { ImageResponse } from 'next/server';
export async function generateImageMetadata({params}) {
const images = await ...;
return images.map((img, idx) => ({
size: { width: 1200, height: 600 },
alt: img.text,
contentType: 'image/png',
id: idx,
}));
}
export default async function ({params, id}) {
const text = await getTextFor(id);
return new ImageResponse(
(
<div
style={{...}}>
{text}
</div>),
{ width: 1200, height: 600 },
);
}
```
### How?
Use `<metadata image>/[[...__metadata_id__]]/route.js` to catch all
metadata images id, and then use this `params.__metadata_id__` as id
argument for dynamic generate image.
If there's param, then we create `<metadata image>/<id>`, if there's
only 1 static image without dynamic `generateImageMetadata` then we keep
use `<metadata image>`
Closes NEXT-896
This ensures we don't fail to return the full body when storing to
fetch-cache in edge-runtime. Also ensures the fetch cache tests are
running for Node.js v16 correctly.
Fetch handling was also failing on Node.js v16 due to react's use of
`res.clone()` being broken with undici which is fixed in the latest
version of edge-runtime so this bumps that.
x-ref: [slack
thread](https://vercel.slack.com/archives/C03S8ED1DKM/p1681310566927429)
Ensure we handle the use-case where a React Server Component using
`fetch` encounters a `204` response.
---------
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This PR updates create-next-app's tailwind config to consider .mdx files
when it generates styles.
If you're using MDX, most of a project's styles are generated by the
other file flags, which can make it tricky to debug/notice the rare
subset from .mdx only.
x-ref: https://vercel.slack.com/archives/C0290CZ3U6Q/p1680976472444189
---------
Co-authored-by: JJ Kasper <jj@jjsweb.site>
### What?
Fixes a bug where `fetch()` to a page that calls `redirect()` would hang
infinitely.
### How?
The `Location` header was missing. The reason this wasn't surfaced
before is that we also inject the `<meta>` tag to redirect which the
browser would pick up to redirect too.
Fixes NEXT-997
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This updates the app route handler signature to be more correct to
prevent the issue with type casting:
```diff
- (request: Request, ctx) => Response
+ (request: NextRequest, ctx) => Promise<Response> | Response
```
This also ensures that the context paramter has the correct types:
```diff
type AppRouteHandlerFnContext = {
- params?: { [param: string]: any }
+ params?: Record<string, string | string[]>
}
```
Since exiting in `setTimeout()` can cause a race condition with sending
the result from the worker and we don't want to destroy workers when
trying to leverage them as it has a perf impact this ensures we create
unique workers per usage and destroy them afterwards.
x-ref: https://github.com/vercel/next.js/pull/47716
Fixes: https://github.com/vercel/next.js/issues/48061
### Description
The next.js router will proxy requests if there's a rewrite with an
external URL, for POST requests this currently leads to an `ECONNRESET`,
because the client request has no body.
Fixes WEB-824
---------
Co-authored-by: Tobias Koppers <tobias.koppers@googlemail.com>
This PR fixes issues where rendering a new parallel route would reset
the scroll state of the page. This would be very apparent if you
scrolled down the page and opened a modal in a parallel route.
After a bit of investigating, I found out that the scroll behaviour
worked like this:
- after a navigation, we say to the router that we should auto-scroll if
possible
- but we don't specify which node of the tree should scroll
- so what happened is that the first router node to run the auto-scroll
effect would steal the auto-scroll, even though it might have been
destined for another node
The fix consists of
- when we received the flight patch, we compute all new segment paths
that will be rendered and add them to the scroll ref
- when the router says that we should autoscroll, the autoscroll
components will now read those paths and compare them with their segment
path and if yes, they will autoscroll
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link NEXT-974
### What?
* move some shared runtime logic to turbopack
* use relative imports from internal code when possible
* move react-refresh logic to turbopack
* move benchmark code logic to turobpack
see https://github.com/vercel/turbo/pull/4553
### Why?
We want to have benchmarking again for turbopack PRs
We want to have a standalone turbopack cli (eventually)
We want to avoid duplicating the runtime code
### How?
refactoring, moving code
Closes#48222.
This PR introduces a new utility function that checks the resource path,
module type, and loaders to replace the existing CSS regex in the Flight
loaders and plugins. The new function is more robust and can be extended
to correctly support other libraries such as `vanilla-extract`.
cc @SuttonJack and @SukkaW (this could be related to the other issue
we've discussed too).
When collecting static icons we need both collect the one from layout
and page, but for root level route `/` we missed the `favicon.ico`
before so when other icon existed, the root page's collected icons will
cover root layout collected ones, which resulted into favicon missing
Fixes#48147
Closes NEXT-976
### What
Support `opengraph-image.alt.txt` and `twitter-image.alt.txt` for static
og/tw metadata image when they need to specify alt txt.
Closes NEXT-990
### Why
for og/tw images, you could have multiple images, so it's tricky to set
alt in metadata exports with alt text. For static case we want it can
work with static files, `.alt.txt` files will be the type to provide alt
text content
### What?
The change in #47985 breaks the URLs of static image files like
`/(group)/opengraph-image.png` to `/opengraph-image.png-012345`.
References from `/` are also broken.
### Why?
This is because only `opengraph-image.ts` and `opengraph-image.tsx` are
considered.
### How?
In this Pull Request, we are trying to solve the problem by including
similar support for `opengraph-image.png` and `opengraph-image.jpeg`.
---------
Co-authored-by: Jiachi Liu <inbox@huozhi.im>
In a previous PR (https://github.com/vercel/next.js/pull/46753), the
`originalSource` was saved to be passed along through the build process.
This was done a bit too late in the flow, which made `originalSource`
include some transformations.
Because `originalSource` is used for display purposes, we need it
unmodified. This PR preserves `originalSource`.
