- Add additional comments for reducer functions.
- Add comments for CacheNode
## Bug
- [ ] Related issues linked using `fixes #number`
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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.
- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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Expand explanation of new router.
## Bug
- [ ] Related issues linked using `fixes #number`
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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.
- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
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Expanded app-render.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
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## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
Lands #37431 again, but it only solves the re-render issue completely for the middleware case (closes#38267), not the `rewrites` case (#37139).
For `rewrites`, the blocker is `isReady` always being `false` initially and to match the markup on hydration we can't simply work around it without a re-render. Need to come up with another fix.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
This always seems to execute.
unless there is a special reason, I think it can declare and assign at the same time, how about this?
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
removed unnecessary assertions of variables to prevent misuse
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
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## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
This ensures we correctly detect query and hash values when there are `?` characters in the hash. A regression test to ensure this working properly has been added.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
Fixes: https://github.com/vercel/next.js/issues/38783
* inject the link tags before page content in layout router
* fix flight handling during client navigation
* fix buffering
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Handles the case where you navigate between routes in `pages` and `app`.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
This outputs a separate manifest for leveraging during deploy to handle the new app outputs. Also ensures dynamic routes from `app` our output in the `routes-manifest` correctly along with fixing the `react-dom` import.
x-ref: https://github.com/vercel/next.js/pull/37551
## Client-side router for `app` directory
This PR implements the new router that leverages React 18 concurrent features like Suspense and startTransition.
It also integrates with React Server Components and builds on top of it to allow server-centric routing that only renders the part of the page that has to change.
It's one of the pieces of the implementation of https://nextjs.org/blog/layouts-rfc.
## Details
I'm going to document the differences with the current router here (will be reworked for the upgrade guide)
### Client-side cache
In the current router we have an in-memory cache for getStaticProps data so that if you prefetch and then navigate to a route that has been prefetched it'll be near-instant. For getServerSideProps the behavior is different, any navigation to a page with getServerSideProps fetches the data again.
In the new model the cache is a fundamental piece, it's more granular than at the page level and is set up to ensure consistency across concurrent renders. It can also be invalidated at any level.
#### Push/Replace (also applies to next/link)
The new router still has a `router.push` / `router.replace` method.
There are a few differences in how it works though:
- It only takes `href` as an argument, historically you had to provide `href` (the page path) and `as` (the actual url path) to do dynamic routing. In later versions of Next.js this is no longer required and in the majority of cases `as` was no longer needed. In the new router there's no way to reason about `href` vs `as` because there is no notion of "pages" in the browser.
- Both methods now use `startTransition`, you can wrap these in your own `startTransition` to get `isPending`
- The push/replace support concurrent rendering. When a render is bailed by clicking a different link to navigate to a completely different page that still works and doesn't cause race conditions.
- Support for optimistic loading states when navigating
##### Hard/Soft push/replace
Because of the client-side cache being reworked this now allows us to cover two cases: hard push and soft push.
The main difference between the two is if the cache is reused while navigating. The default for `next/link` is a `hard` push which means that the part of the cache affected by the navigation will be invalidated, e.g. if you already navigated to `/dashboard` and you `router.push('/dashboard')` again it'll get the latest version. This is similar to the existing `getServerSideProps` handling.
In case of a soft push (API to be defined but for testing added `router.softPush('/')`) it'll reuse the existing cache and not invalidate parts that are already filled in. In practice this means it's more like the `getStaticProps` client-side navigation because it does not fetch on navigation except if a part of the page is missing.
#### Back/Forward navigation
Back and Forward navigation ([popstate](https://developer.mozilla.org/en-US/docs/Web/API/Window/popstate_event)) are always handled as a soft navigation, meaning that the cache is reused, this ensures back/forward navigation is near-instant when it's in the client-side cache. This will also allow back/forward navigation to be a high priority update instead of a transition as it is based on user interaction. Note: in this PR it still uses `startTransition` as there's no way to handle the high priority update suspending which happens in case of missing data in the cache. We're working with the React team on a solution for this particular case.
### Layouts
Note: this section assumes you've read [The layouts RFC](https://nextjs.org/blog/layouts-rfc) and [React Server Components RFC](https://reactjs.org/blog/2020/12/21/data-fetching-with-react-server-components.html)
React Server Components rendering leverages the Flight streaming mechanism in React 18, this allows sending a serializable representation of the rendered React tree on the server to the browser, the client-side React can use this serialized representation to render components client-side without the JavaScript being sent to the browser. This is one of the building blocks of Server Components. This allows a bunch of interesting features but for now I'll keep it to how it affects layouts.
When you have a `app/dashboard/layout.js` and `app/dashboard/page.js` the page will render as children of the layout, when you add another page like `app/dashboard/integrations/page.js` that page falls under the dashboard layout as well. When client-side navigating the new router automatically figures out if the page you're navigating to can be a smaller render than the whole page, in this case `app/dashboard/page.js` and `app/dashboard/integrations/page.js` share the `app/dashboard/layout.js` so instead of rendering the whole page we render below the layout component, this means the layout itself does not get re-rendered, the layout's `getServerSideProps` would not be called, and the Flight response would only hold the result of `app/dashboard/integrations/page.js`, effectively giving you the smallest patch for the UI.
---
Note: the commits in this PR were mostly work in progress to ensure it wasn't lost along the way. The implementation was reworked a bunch of times to where it is now.
Co-authored-by: Jiachi Liu <4800338+huozhi@users.noreply.github.com>
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
When an API route is detected for the `getRouteInfo` method (a route with a `/api` prefix), we should redirect the user to the original destination instead of the rewritten destination. This makes the behaviour consistent with how rewrites have been documented thus far.
The reproduction described in #37783 now causes an invariant violation error (for redirecting to the same URL), but this is instead related to the fact that the router (when rehydrated) attempts to redirect the user again to the correct destination. This should be corrected either in this PR or in a future one that addresses the hydration behaviour directly.
## Bug
- Related to #37783
- Related to #37949
## Example
With the following `next.config.js`:
```js
/** @type {import('next').NextConfig} */
const nextConfig = {
reactStrictMode: true,
async rewrites() {
return {
beforeFiles: [
{
source: '/:path(.*)',
has: [{ type: 'query', key: 'json', value: 'true' }],
destination: '/api/json?from=:path',
},
],
}
},
}
module.exports = nextConfig
```
The following link:
```jsx
<Link href="/not/real?json=true">
<a>Take me to JSON</a>
</Link>
```
When clicked, will navigate the user to `/not/real?json=true` and have it's contents served by `/api/json` and not simply redirected to `/api/json` which is incorrect.
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
avoid fetching a chunk for api endpoints on middleware redirect.
This still makes a request to the data endpoint, not sure if this is a good idea,
but a rewrite _can_ happen from that data request.
## Related
- Fixes#37944
- Fixes https://github.com/vercel/next.js/issues/37783
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
* Refactor `runDependingOnPageType`
* Throw specific error when the compiled middleware cannot be found
* Do not render `MiddlewareNotFoundError` on dev
* Allow to invalidate compilers by type
* Show compile errors when middleware fails to build
* Add tests
This adds a guard for whenever we do a hard navigation over a client-navigation to ensure we aren't redirecting to the same URL that we are currently on as this can cause infinite redirecting. This also fixes some cases with middleware rewrites without i18n enabled and expands our middleware suite to test both with i18n and without.
This also fixes a race condition with the query updating where a user could attempt a route transition and it then gets overridden by the query updating and prevents firing router events during the query updating as these can be false signals of a transition.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
Fixes: https://github.com/vercel/next.js/issues/37804
This PR fixes an issue where we have a middleware that rewrites every single request to the same origin while having `i18n` configured. It would be something like:
```typescript
import { NextResponse } from 'next/server'
export function middleware(req) {
return NextResponse.rewrite(req.nextUrl)
}
```
In this case we are going to be adding always the `locale` at the beginning of the destination since it is a rewrite. This causes static assets to not match and the whole application to break. I believe this is a potential footgun so in this PR we are addressing the issue by removing the locale from pathname for those cases where we check against the filesystem (e.g. public folder).
To achieve this change, this PR introduces some preparation changes and then a refactor of the logic in the server router. After this refactor we are going to be relying on properties that can be defined in the `Route` to decide wether or not we should remove the `basePath`, `locale`, etc instead of checking which _type_ of route it is that we are matching.
Overall this simplifies quite a lot the server router. The way we are testing the mentioned issue is by adding a default rewrite in the rewrite tests middleware.
Shallow route changes did not work for rewritten pages when Middleware
was used, and made hard refreshes, although it was possible with static rewrites.
This happened because the router has a manifest of the static rewrites,
allowing static rewrites to map the route before comparing with the
local cache.
Middleware rewrites are dynamic and happening on the server, so we
can't send a manifest easily. This means that we need to propagate
the rewrites from the data requests into the components cache in
the router to make sure we have cache hits and don't miss.
This commit does exactly that and adds a test to verify that it works.
This fixes#37072 and fixes#31680
_Note:_ there's one thing that is somewhat an issue though: if the first
page the user lands on is a rewritten page, and will try to make a
shallow navigation to the same page--we will make a `fetch` request.
This is because we don't have any client cache of the `rewrite` we just
had.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
* Improve stack traces in dev mode
* Refactor `react-dev-overlay` to support the Edge Compiler
* Serialize errors including the compiler `source`
* Adopt the new `react-dev-overlay` displaying it for middleware errors
* Improve tests
* fix rsc cases
* update test
* use check for dev test
* handle different error from node version
Co-authored-by: feugy <damien@vercel.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Fixes#37683
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
* Ensure custom middleware matcher is used correctly in client manifest
* lint-fix
* patch e2e case
* fix rsc case
* update test
* add missing normalize
This ensures we use the correct dynamic route params favoring params from the URL/matched-path over route-matches. This also ensures we properly cache `_next/data` requests client side when the page is not a `getServerSideProps` page.
x-ref: https://github.com/vercel/next.js/pull/37574
## Bug
- [ ] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
* Update to process redirects/rewrites for _next/data
* correct matched-path resolving with middleware
* Add next-data header
* migrate middleware tests
* lint-fix
* update error case
* update test case
* Handle additional resolving cases and add more tests
* update test from merge
* fix test
* rm .only
* apply changes from review
* ensure _next/data resolving does not apply without middleware
* Refactor data fetching to support getting headers
* Relax `getNextPathnameInfo` type
* Add test for middleware internal redirects
* Export `ParsedRelativeUrl` type
* Refactor `getMiddlewareEffects`
* Move rewrite i18n test to middleware rewrite tests
* Fix bug parsing pathname info
* Normalize data requests to page requests for middleware
* Ensure there is a header `x-nextjs-matched-path` for middleware rewrites on data requests
* Extract `getDataHref` to a function
* Stop using `getDataHref` for flight
* Always set the query in `dataHref` independently of if it is SSG
* Add test for recursive rewrites
* Refactor dynamicPath validation to `matchHrefAndAsPath`
* Add `dataHref` to `FetchDataOutput`
* Extract `matchesMiddleware` function
* Add `hasMiddleware` option to `fetchNextData`
* Move preflight test
* Remove preflight test
* Add middleware prefetch tests
* Remove preflight
* Attempt to reduce bundle size
Include `withMiddlewareEffects` and `matchHrefAndAsPath` into `router`
Bring `getDataHref` back to `page-loader`
Bring `resolveDynamicRoute` back to `router`
* Reduce arg duplication for `withMiddlewareEffects`
* Remove some async/await and spreads to reduce bundle size
* Upgrade `edge-runtime` & clone `Request` on redirects to mutate headers
* Add some rewrite tests
Co-authored-by: Kiko Beats <josefrancisco.verdu@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
