Implements https://github.com/vercel/next.js/issues/30997 with some minor tweaks to the design:
* The hook is moved to Client Components (e.g. `pages/_app` instead of `pages/_document`). This was a silly oversight in the original design: the hook needs to be called during server prerendering.
* `useFlushEffects` instead of `useFlushEffect` as there isn't a particularly safe way to implement the singular semantics as a Client Component hook given the current implementation of server rendering.
---
Fixes#30997
The shared utils file included an import from `react` (because it was using `createContext`) which seems to be unnecessary in the Middleware bundle.
With this PR and steps #34425 laid out, the bundle size did decrease without breaking functionality.
Fixes#34425
## 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 `yarn lint`
Fixes: #34342
Visiting the following page will call gSSP indefinitely in a loop and logs errors from `on-demand-entries-client`:
```js
const Home = () => null
export default Home
export function getServerSideProps() {
console.log("gssp called")
return { notFound: true }
}
```
We should not keep fetching the page if it returns 404 as it can introduce unnecessary data requests.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
This PR removes the experimental `optimizeImages` flag. This feature was designed to automatically add preload tags for images, but I was never able to get it to do a very good job of selecting the images that actually need preloading.
This feature never graduated from experimental and in fact we never even publicized it as an experimental feature for people to try.
Additionally, even if someone was using this feature, it wouldn't have a functional effect, only a performance effect (removal of some preloads).
For those reasons, I believe it is safe to remove this functionality and that it is not a breaking change.
Fixes#33476
I've added the test for this but it passes either way, even when the change to loadable.js is not made. On the reproduction I was able to reproduce it consistently and it's fixed with this change.
## 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 `yarn lint`
Make the external `Router` state immutable, and make it so there's only one place (`set`) where it is changed and announced. This is to prepare for #33919, which ensures that we only create a new router once per tree.
* Allow scroll prevention on hash change
Currently, `scrollToHash` is performed on every hash change, even when this change is caused by `<Link scroll={false} {...props} />`.
This change prevents scrolling in this case and allows users to specify the desired scrolling behavior in the router's `hashChangeComplete` event.
* Add test case and apply fixes
Co-authored-by: JJ Kasper <jj@jjsweb.site>
In #33968, a warning was added for script tags inserted through the
next/head component. This change unintentionally included
application/ld+json scripts, which shouldn't be triggering the
warnings (as they were originally intended to catch scripts where
loading order or timing could be important). This change adds an
exception for application/ld+json scripts, so they do not log the
warning if they are included through next/head.
This commit adds a development mode warning in the console
if you try to include <link rel="stylesheet"> tags in
next/head, e.g.
```
<Head>
<link ref="stylesheet" href="..." />
</Head>
```
The warning message explains that this pattern will not
work well with Suspense/streaming and recommends using a
custom Document component instead.
## Feature
- [x] 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`
- [x] Integration tests added
- [x] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [x] Errors have helpful link attached, see `contributing.md`
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
This commit adds a development mode warning in the console
if you try to include <script> tags in next/head, e.g.
```
<Head>
<script async src="..." />
</Head>
```
The warning message explains that this pattern will not
work well with Suspense/streaming and recommends using the
next/script component instead.
TODO in follow-up PR: add same warning for stylesheets, etc
## Feature
- [x] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [x] Integration tests added
- [x] Documentation added
- [x] Errors have helpful link attached, see `contributing.md`
This ensures we properly handle external `beforeFiles` rewrites client-side so that a different result doesn't occur client-side versus on a direct visit.
## 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/32348
## Feature
Reuse most of the part from manifest plugin to generate similar assets
Resolves#33667
- [x] 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 `fixes #number`
- [x] Integration tests added
## Bug
- [ ] Related issues linked using `fixes #33314` #33314
- [ ] Moved the `is-plain-object` file to the shared directory since it's emitted to the client and thus needs to be transpiled.
This is just my 2nd PR so if I'm missing something please let me know.
Part of #31506, this PR moves the code of middleware handling from the base server to the node server.
## 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 `yarn lint`
Adds base http classes, along with Node + Web (partial) implementations
Removes usage of IncomingMessage and ServerResponse from base server
Co-authored-by: Shu Ding <3676859+shuding@users.noreply.github.com>
and text is easier to gzip
and it avoid the reference to `Buffer` from next
## 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 `yarn lint`
This PR moves `require` and `fs` usage from the base server to the node server. Closes#32322.
## 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 `yarn lint`
* JSON.stringify generic errors
* Add util for normalizing errors
* lint-fix
* Add better error for null case as well
Co-authored-by: Michael Ozeryansky <mozeryansky@users.noreply.github.com>
it should not leak into the client runtime
cc @javivelasco
## 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 `yarn lint`
This PR adds a new command to the `next` CLI.
Running `next info` will print useful information to the terminal about how/where Next.js is run. This information can be added to the Bug report when opening an issue in the repository.
This makes reporting issues more accurate and doesn't require the user to guess certain details, the command will retrieve it on their behalf.
Example output:
```sh
$ npx --no-install next info
Operating System:
Platform: linux
Version: #22-Ubuntu SMP Fri Nov 5 13:21:36 UTC 2021
Binaries:
Node: 16.13.0
npm: 8.1.0
Yarn: 1.22.17
pnpm: 6.24.2
Relevant packages:
next: 12.0.8-canary.14
react: 17.0.2
react-dom: 17.0.2
```
The idea is based on #32858
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [x] 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 `yarn lint`
Co-authored-by: Steven <229881+styfle@users.noreply.github.com>
Fixes#32727
With this PR we introduce a new header that can be used to respond from Middleware `x-middleware-cache`. When the value of this header is set to `no-cache`, the client will **not** store the effects read from a preflight response to be used in an upcoming check.
Instead of using `Cache-Control` we are using a custom header to not mess with browser specific caching. Accepting a specific value to opt out (`no-cache`) opens the future opportunity of having other caching strategies.
This feature solves the issue of having a preflight request whose parameters can change from the client affecting the effects. For example, having a cookie that would make a middleware rewrite to one pathname or another and allowing to change that cookie from the client. In that case we'd always need to revalidate the effects on navigation synchronously.
Of course when using this feature it is possible that we add some latency on navigation so the preferred mechanism will be caching by default since it covers the most common use cases.
When the URL already contains a hash (like `/#section`) and a `Link` with `href="/"` is clicked, the page should scroll to the top on the first click. Currently, it only happens with the second click (after `#section` has been removed from the URL).
Fixes#32931
## 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 `yarn lint`
Fixes#32302
This PR fixes an issue on hydration where we rewrote using a middleware to a dynamic path. In such cases we need to run preflight to find out the middleware operation metadata.
## Bug
- [X] Related issues linked using `fixes #number`
- [X] Integration tests added
- [X] Errors have helpful link attached, see `contributing.md`
Fixes incorrect generated manifest and generated directory for `index/[...dynamic]` pages
Too much normalizing adding extra `index/` prefix to `index/[...dynamic]` routes which lead to the incorrected generated routes like `.next/server/pages/index/index/index/[...dynamic]`
## Bug
Fixes https://github.com/vercel/customer-issues/issues/146
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
**Note**: This PR is applying again changes landed #31935 that were reverted from an investigation.
This PR fixes#30398
By default Next will polyfill some fetch APIs (Request, Response, Header and fetch) only if fetch is not found in the global scope in certain entry points. If we have a custom server which is adding a global fetch (and only fetch) at the very top then the rest of APIs will not be polyfilled.
This PR adds a test on the custom server where we can add a custom polyfill for fetch with an env variable. This reproduces the issue since next-server.js will be required without having a polyfill for Response which makes it fail on requiring NextResponse. Then we remove the code that checks for subrequests to happen within the **sandbox** so that we don't need to polyfill `next-server` anymore.
The we also introduce an improvement on how we handle relative requests. Since #31858 introduced a `port` and `hostname` options for the server, we can always pass absolute URLs to the Middleware so we can always use the original `nextUrl` to pass it to fetch. This brings a lot of simplification for `NextURL` since we don't have to consider relative URLs no more.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Reverts support for render prop in `<Main />` in `Document`. This was added just to support the `useFlushEffect` hook, but we've tweaked the design a bit, moving it to `App`.
This PR fixes#30398
By default Next will polyfill some fetch APIs (Request, Response, Header and fetch) only if fetch is not found in the global scope in certain entry points. If we have a custom server which is adding a global fetch (and only fetch) at the very top then the rest of APIs will not be polyfilled.
This PR adds a test on the custom server where we can add a custom polyfill for fetch with an env variable. This reproduces the issue since next-server.js will be required without having a polyfill for Response which makes it fail on requiring NextResponse. Then we remove the code that checks for subrequests to happen within the **sandbox** so that we don't need to polyfill `next-server` anymore.
The we also introduce an improvement on how we handle relative requests. Since #31858 introduced a `port` and `hostname` options for the server, we can always pass absolute URLs to the Middleware so we can always use the original `nextUrl` to pass it to fetch. This brings a lot of simplification for `NextURL` since we don't have to consider relative URLs no more.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Since #31939 is going to move the `Document` components, we can't rely on `DefinePlugin` to provide environment variables. This PR passes them as render opts instead. We can't just force this to be bundled like e.g. `next/dynamic`, because we use it internally.
Whenever we trigger a route change in the client we check if there route we are navigating to is affected by a middleware. When this is the case we run a preflight and in case there is an effect that tells us that the middleware is responding with content we force a _refresh_. This is fine for navigation in general but it is not ok when the change is triggered for hydration. For example, in cases where the rendered page is a dynamic page this triggers an infinite reload.
In this PR we add a test where we add a `_middleware` that proxies to a dynamic path. When making a request to `/interface/root-subrequest` there will be a middleware that simply performs a fetch against localhost for the same `/interface/root-subrequest`. The new request will skip the middleware to avoid loops and then render the dynamic page. Then client will force a change for hydration resulting in a preflight request that tells that the client must refresh because for that path there is a middleware writing content.
Then we add a fix which simply consist of checking the internal option that tells when a change is triggered for hydration and skip the preflight in such scenario.
## 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 `yarn lint`
This fixes our `basePath` detection/replacing server-side as we were incorrectly considering `/docss` a match for a `basePath` of `/docs` which caused us to have an unexpected value in the `normalizeLocalePath` function.
- Fixes#22429
- Regression introduced in #17757
- Fixes: https://github.com/vercel/next.js/issues/31423
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
This ensures the `asPath` and `req.url` values are normalized correctly for fallback pages with i18n in minimal mode. This also copies the minimal mode test suite to run against i18n as well. This also fixes an issue where rewrite params weren't passed correctly on the client when no params were already used in the destination.
The provided reproduction has been deployed against this patch [here](https://nextjs-error-repro-9zdu3sp5r-ijjk-testing.vercel.app/page/test-page) show it working.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Fixes: https://github.com/vercel/next.js/issues/27563
Fixes: https://github.com/vercel/next.js/issues/30203
Fixes https://github.com/vercel/next.js/issues/31013
My understanding is that there are currently two functions `Router.change` and `Router.prefetch` leading to `Router._preflightRequest` and they pass `options.as` URL differently regarding base path.
In this PR, such difference will be handled in `Router._preflightRequest` to add base path before actually fetching.
Thanks for the review!
P.S.
Since middleware feature is a relatively new, official maintainers might not want external contributions around this area at this stage.
I totally understand such situation, so please let me know if that's the case. I can look for other issues to investigate instead.
## 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 `yarn lint`
Fixes#30897
This PR fixes the linked issue where rewrites are not being applied for locale. It adds the corresponding test but also, as it was added in debugging process, it introduces a helper to read/write into the `request` object.
We are currently writing directly into the request by casting to `any` and then using flags like `_nextRewrote`. Instead, this PR puts all of this metadata under a symbol so it is not directly accessible. This also allows to have a single place where all of this metadata is listed so we can add comments describing the purpose of each flag.
In the same way, there is metadata written in the querystring. This is adding some types for it in order to throw some visibility on where is this metadata accessed. In an upcoming PR we can move all of it to the `request` object if possible to simplify the system.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Adds support for render props to the `<Main>` component, when using the [functional custom `Document`](https://github.com/vercel/next.js/pull/28515) style. This allows you to write something like this:
```tsx
export default function Document() {
const jsxStyleRegistry = createStyleRegistry()
return (
<Html>
<Head />
<body>
<Main>
{content => (
<StyledJsxWrapper registry={jsxStyleRegistry}>
{content}
</StyledJsxWrapper>
)}
</Main>
<NextScript />
</body>
</Html>
)
}
```
In functional document components, this allows the `<App>` to be wrapped, similar to `enhanceApp` (which is only available via `getInitialProps`, which is not supported by functional document components). The primary use for this is for integrating with 3rd party CSS-in-JS libraries, allowing them to attach an `useFlush` handler to [support React 18](https://github.com/reactwg/react-18/discussions/110):
```tsx
import { unstable_useFlush as useFlush } from 'next/document'
export default function StyledJsxWrapper({ children, registry }) {
useFlush(() => {
/* ... */
})
return (
<StyleRegistry registry={registry}>
{children}
</StyleRegistry>
)
}
```
Support for `useFlush` will be added in a follow up PR.
In Next 12, `router.replace()` treats the page props cache as authoritative when fetching SSG props in preview mode. This makes sense outside preview mode (static props won't change), but within preview mode this prevents reloading the preview data dynamically without force-refreshing the page.
This PR fixes the problem by instructing Next to bypass the props cache if it's an SSG route AND preview mode is on.
Repro: https://github.com/kamsar/next-replace-previewmode-staticprops/blob/main/pages/index.js
## Bug
- [x] Related issues linked using `fixes #number`: Fixes https://github.com/vercel/next.js/issues/30756
- [ ] Integration tests added: Did not find existing tests for the router, but I'd be happy to write one if someone could point me in the right direction.
This ensures we de-dupe inflight `getStaticProps` requests the same way we do `getServerSideProps`, this also removes the `_getStaticData` and `_getServerData` methods as they were repeating the same logic so could be combined into `fetchNextData`.
* Add experimental config for middleware
* Apply suggestions from code review
Co-authored-by: Steven <steven@ceriously.com>
Co-authored-by: Steven <steven@ceriously.com>
This PR adds support for [Middleware as per RFC ](https://github.com/vercel/next.js/discussions/29750).
## 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
This refactor is the first of a few changes to support "classic" (two-part)
streaming. This one should be a noop that doesn't actually change the behavior.
It re-organizes the way that functions are wrapped in Document Head/NextScript
so anything that will be part of the second flush can be separated out from the
first flush. It also adds the structure for a useMaybeDeferContent hook, but
currently always assumes that nothing should be deferred.
The next PRs will actually implement streaming.
* Remove inert font tag in font optimization
* Fix lint
* Remove inert font tag during font optimization
* Fix lint
* Fix lint
* Fix lint
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This fixes segments inside of the host of the destination failing to parse with url.parse due to the unexpected colon by escaping the colon for segments and then unescaping them after we have parsed the URL.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
x-ref: https://github.com/vercel/vercel/pull/6713
## Documentation / Examples
- [x] Make sure the linting passes
- [x] Errors have helpful link attached, see `contributing.md` (for #28165, #27611)
- [x] Update test case
Do not fallback to loadable component when `reactRoot` is enabled but without `concurrentFeatures`. Thus we can enable pure client suspense:
`fallback` is always rendered on server side, but client side can work with fully functional suspense.
Closes#28117
Removes the extra webpack handling that was previously done, this ensures the file which is already minified and compiled does not get passed through minification again.
Largely based on #21418Closes#21418
The polyfill loading already has tests so no other changes are necessary.
## 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
### Changes
#### Feature
* Adopt `React.lazy` into `next/dynamic`, enable it when `options.suspense` is `true`
* Support `next/dynamic` with `suspense=true` in SSR and SSG
#### Tests
| Scenario | Case | Behavior |
|:----:|:----:|:----:|
| basics | react 17 or 18 by default | dev/build error or pass |
| blocking rendering | `reactRoot: true` + `concurrentFeatures: false` | dev/build pass |
| concurrent rendering | `reactRoot: true` + `concurrentFeatures: true` | dev/build pass |
## Feature
- [x] 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`
- [x] 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`
We generate the HTML for a document in two steps: First, we generate the body (i.e. everything under `<div id="__next">`). Then we generate the rest of the document and embed the body in it.
This doesn't work when the body is a stream, because React can't render the body for us unless we buffer it, and buffering it means not streaming. This PR takes the existing approach for AMP and uses it for all scenarios: instead of rendering HTML, we just render a placeholder that we can replace with HTML later. This will be used in a follow-up PR to let us know where to concatenate the body stream.
I also used the opportunity to split out `HtmlContext` from `DocumentProps`, as these will not be the same thing with functional document components.
This is a follow-up to https://github.com/vercel/next.js/pull/26963 which after discussion changes to interpolate the decoded variant of the value into the path.
x-ref: https://github.com/vercel/next.js/issues/24775
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
From https://github.com/vercel/next.js/pull/20628, when the page is rendered server-side, `Router`'s `isReady` field needs to be initially set to `true`. However, when `_app` has custom `getInitialProps`, it seems that it is not the case, even though the page is rendered on the server.
This leads to a bug that `Router.isReady` is never set to `true`.
This pull request fixes the problem by fixing the initial calculation logic of `isReady` of `Router`.
## 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
- [x] Make sure the linting passes
Currently there is a lot of mutation in the Next.js Server and the checks for Locale are directly coded in the general request handler. Ideally, we should have a function where we just pass the request input (url + headers + config) and generate a bunch of metadata that analyzes it generating all metadata we might require for both the URL and i18n + basePath information.
This PR brings:
- A new parsing function `parseUrl` that joins parsing an absolute/relative URL into a data structure compatible with the Node parsing output but missing redundant properties.
- A wrapper `parseNextURL` that extends `parseUrl` analyzing `i18n` and `basePath` based on the provided configuration, url and headers. This function is pure and stateless so it can be used outside of the Next.js context.
- Types improvements and reuse.
- Refactors `next-server.ts` request handling using the above mentioned functions so that the code there just apply effects to the `req` object and the `parsedUrl.query` leaving the code much more straightforward.
- Refactors `getRouteRegex` decomposing in two different functions where `getParametrizedRoute` can be used to retrieve the serializable data that is used to generate the Regex.
This updates redirects' regexes to not match `/_next` paths since this is currently unexpected and can easily cause a multi-match redirect to break loading client-side assets. This also fixes custom-routes not matching correctly when `trailingSlash: true/false` is used
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
x-ref: https://github.com/vercel/next.js/discussions/24683
x-ref: [slack thread](https://vercel.slack.com/archives/CGU8HUTUH/p1626159845474000)
My last PR (#26205) made the hash change events not fire when in i18n was enabled, as seen in #26853. This PR fixes that and adds a test for this case.
fixes#26853
## 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
