This PR deprecates declaring a middleware under `pages` in favour of the project root naming it after `middleware` instead of `_middleware`. This is in the context of having a simpler execution model for middleware and also ships some refactor work. There is a ton of a code to be simplified after this deprecation but I think it is best to do it progressively.
With this PR, when in development, we will **fail** whenever we find a nested middleware but we do **not** include it in the compiler so if the project is using it, it will no longer work. For production we will **fail** too so it will not be possible to build and deploy a deprecated middleware. The error points to a page that should also be reviewed as part of **documentation**.
Aside from the deprecation, this migrates all middleware tests to work with a single middleware. It also splits tests into multiple folders to make them easier to isolate and work with. Finally it ships some small code refactor and simplifications.
This PR changes the experimental `layout=raw` images to use the native lazy loading behavior (as opposed to the IntersectionObserver).
This will (eventually) lead to smaller client bundles and faster image loading since there is no JS needed to load the image.
However, we'll lose the `lazyRoot` and `lazyBoundary` behavior since those are specific to the IntersectionObserver implementation.
Clarify that the environment variables are ordered in descending priority and that the existing system environment is not overridden.
fixes https://github.com/vercel/next.js/issues/36966
## Bug
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## Feature
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Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
## Bug
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## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [x] Related issues linked using [19693](https://github.com/vercel/next.js/discussions/19693)
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## Documentation / Examples
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Closes#29959
If I understand correctly, a page that relies on `publicRuntimeConfig` must be server-side rendered, then that page need either `getInitalProps` or `getServerSideProps`, or the application has a Custom App with `getInitialProps` enabled.
* remove the experimental web vital hook api
* remove the exported flush effects api and only error on development, keep only usage to styled-jsx
for web vital hook API: The usage is not widly adopted since the existing exported vital api could do the same work. In the future we'll deprecate the `_app.server` in favor of `_app` in server component pages. so that this api won't be required.
for flush effects api: other css-in-js libs are not using the same approach like styled-jsx which holding a style registry and could flush it during streaming. emotion-js and styled-components are still relying on `Document.getInitialProps` atm and we have supported it in latest canary
Small docs fix. We've got a snazzy new website at typescript-eslint.io. Eventually the .md docs pages will serve just as partial docs sources, not the right URL to visit.
fixes#28453
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## Feature
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## Documentation / Examples
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This PR moves the instructions for configuring CI providers to preserve Next.js's build cache out of the _No Cache Detected_ error message and into ~the _Deployment_~ a new page within the _Advanced Features_ docs.
This change is beneficial because it makes the CI configuration examples visible in the context of other helpful documentation for deploying Next.js.
👉 **Prior to this change, these CI configuration examples didn't show up in the Next.js docs.**
The relocated instructions are now linked on the _No Cache Detected_ error message page.
## Documentation / Examples
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Co-authored-by: Lee Robinson <me@leerob.io>
Co-authored-by: Steven <steven@ceriously.com>
copy/pasting the SCSS example into VSCode results in linter warning. Fixed with semicolon on variable assignment. Added the second semicolon for consistency.
## Documentation / Examples
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Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
This PR updates the copy in the source maps section of the docs to reflect the improvement made to webpack that generate source maps.
## Bug
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## Documentation / Examples
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## Documentation / Examples
- Updating Tina Demo URL
- Adding Tina to blog-starter example
- Adding Tina to Basic features section
- Updating Tina to actually work again
This PR introduces a more predictable API to manipulate cookies in an Edge Function context.
```js
const response = new NextResponse()
// set a cookie
response.cookies.set('foo, 'bar') // => set-cookie: 'foo=bar; Path=/'`
// set another cookie
response.cookies.set('fooz, 'barz') // => set-cookie: 'foo=bar; Path=/, fooz=barz; Path=/'`
// delete a cookie means mark it as expired
response.cookies.delete('foo') // => set-cookie: 'foo=; Path=/; Expires=Thu, 01 Jan 1970 00:00:00 GMT, fooz=barz; Path=/'`
// clear all cookies means mark all of them as expired
response.cookies.clear() // => set-cookie: 'fooz=; Path=/; Expires=Thu, 01 Jan 1970 00:00:00 GMT, foo=; Path=/; Expires=Thu, 01 Jan 1970 00:00:00 GMT'`
```
This new cookies API uses [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) interface, and it's available for `NextRequest` and `NextResponse`.
Additionally, you can pass a specific cookies option as a third argument in `set` method:
```js
response.cookies.set('foo', 'bar', {
path: '/',
maxAge: 60 * 60 * 24 * 7,
httpOnly: true,
sameSite: 'strict',
domain: 'example.com'
}
```
**Note**: `maxAge` it's in seconds rather than milliseconds.
Any cookie manipulation will be reflected over the `set-cookie` header, transparently.
closes#31719
## Bug
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…rding due to customer confusion
This PR updates the middleware (edge functions) api docs environment section to remove the dev and prod wording due to customer confusion
## Bug
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## Documentation / Examples
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## Description
This PR implements a new configuration object in `next.config.js` called `experimental.images.remotePatterns`.
This will eventually deprecate `images.domains` because it covers the same use cases and more by allowing wildcard pattern matching on `hostname` and `pathname` and also allows restricting `protocol` and `port`.
## Feature
- [x] Implements an existing feature request.
- [x] Related issues linked
- [x] Unit tests added
- [x] Integration tests added
- [x] Documentation added
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## Related
- Fixes#27925
- Closes#18429
- Closes#18632
- Closes#18730
- Closes#27345
This variable is exported by next but undocumented, and its usage is necessary to build auxiliary scripts for your server-side applications. See https://github.com/vercel/next.js/issues/36237#issuecomment-1117694528 for an example.
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## Documentation / Examples
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Mention that the HTTP.IncomingMessage object is augmented by `cookies` in getServerSideProps
## Documentation / Examples
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## Bug
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## Feature
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## Documentation / Examples
- [x] Improve wording
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* Added type to Page Component for TypeScript
Following this tutorial, I noticed that TS was complaining that "getLayout" did not exist on Page. That is normal since Page is typed as NextPage. I simply exported the new type we create in "_App.tsx" and used it as the return type for Page. This will probably help others seeing that red in their editors and perhaps being confused.
* Small linting change
* Apply suggestions from code review
* Update layouts.md
* lint fix
* update type
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This should be made explicitly clear because other code may just call `next` instead of `next dev` (e.g. https://github.com/netlify/framework-info/blob/main/src/frameworks/next.json).
Being in the ninth circle of debug hell right now I could not take it for granted that the two were the same till I saw some kind of confirmation, either from the docs or from the source. Source is great, but calling it out in the docs would saved me some time.
## Bug
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## Feature
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## Documentation / Examples
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This makes it clear that the font optimization adds these for you.
This avoids duplicate `<link rel="preconnect" />` in the HTML output if the developer is unaware that it is being added automatically.
## Documentation / Examples
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ISR works self-hosted, but there's some more guidance needed when hosting with container-based setups (e.g. Kubernetes) and how the files are shared between different pods. This was based on community feedback. Please let me know if you'd like to see any additions here! 🙏
This PR makes the following changes:
* Always add the `height` and `width` prop to image with `raw` layout (previously only added to images without `sizes`)
* Add a warning if a raw layout image is getting stretched (which can be caused by interaction of height and width prop with styles)
* Remove automatic aspect-ratio style from `raw` images. This is no longer necessary if all `raw` images have height and width props.
* Update tests and docs accordingly
Changing the paragraph to not include `beforeInteractive` as one of the possible use cases of `onLoad`.
*Update:* Added docs for `onError` in the API reference of `next/script`.
@housseindjirdeh does `onError` also has the same limitation or is this only for `onLoad`?
Closes https://github.com/vercel/next.js/issues/33402
## Feature
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- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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## Overview
The subject is `When does getStaticPaths run` but this docs denotes about `getStaticProps`.
So could you check `getStaticProps` is right?
## Documentation / Examples
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Changes to the beforeInteractive strategy to make it work for streaming
Splitting `beforeInteractive` into two strategies `beforeInteractive` at the _document level and `beforePageRender` for page level <Scripts>
Clarifies that the query object contains query and dynamic path parameters. As I was helping another engineer, I tried to reference this documention. I thought the routing page would be a more useful reference if it indicated how to read path parameters.
## Bug
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## Feature
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- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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Fix line in link to interface `NextConfig` where describe `next.config.js` properties.
## Bug
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## Feature
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## Documentation / Examples
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#33097 adds a note to the `Script` documentation explaining that `onLoad` cannot be used with the `beforeInteractive` strategy. However, this note was missing in the [Basic Features](https://nextjs.org/docs/basic-features/script) documentation, causing some confusion. This adds the note there too.
This will hopefully fix a lot of confusion noted in https://github.com/vercel/next.js/issues/33191.
we can import server or client components in any server component, not from it.
## Bug
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## Feature
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- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
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## Documentation / Examples
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Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
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** I've made the change via GitHub UI sorry :)**
Hi,
I think the "data must be public" condition on getSSP is not really true, and even counter-productive. Being able to statically render more content is most probably positive, in terms of perceived and real performance of the app + energy consumption. It's actually totally possible, and not even that hard thanks to middleware, to statically render custom, paid, segment-specific content (and even individual-specific content under certain conditions).
I've documented the reason for this change in a few places if you want more details:
- related PR on React: https://github.com/reactjs/reactjs.org/pull/4566
- demo implementation and explanation on how to couple middlewares and getSSP to statically render any kind of content (including custom content): https://blog.vulcanjs.org/render-anything-statically-with-next-js-and-the-megaparam-4039e66ffde
This PR fixes a request from `@rauchg` that we specify more clearly that Middleware is Beta and organize it properly within the navigation.
## Bug
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* Added next.config.mjs for @next/mdx
* Replaced leftover reference to babel
* Fixed formatting problem
* Added next-mdx-remote and @mdx-js/mdx as options
This adds documentation for the `x-nextjs-cache` header which is now exposed for ISR pages and image optimization requests to help signal the cache state.
## Documentation / Examples
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Co-authored-by: Steven <steven@ceriously.com>
As per the feedback in #35952.
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Migrating from express to nextjs API routes broke one of our APIs because of how `redirect` works in nextjs vs. how it works in express. We need to redirect the user to a confirmation page via GET after making a POST request, which is not possible with `redirect`.
HTTP 303 seems to be the way to go in that case and I think it should be mentioned here.
## Documentation / Examples
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Removed the misleading TTFB information. It was easy to read that incorrectly and while getStaticProps does have a better TTFB that's not why you might need to avoid getServerSideProps, I gave better examples.
I also wanted to answer "well how do I cache `getServerSideProps`?" and now there's a link.
## Documentation / Examples
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