This PR implements the process of generating strict "type guard" files,
to ensure that all entrypoints have the correct export types. The type
checking process happens automatically during `next build`.
## 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`
- [ ] 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
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Co-authored-by: Tobias Koppers <tobias.koppers@googlemail.com>
Remove `browsersListForSwc` since it is enabled by default now, and disable `legacyBrowsers` by default.
This PR also bumps the default browserslist to the following:
- Chrome 64+
- Edge 79+
- Firefox 67+
- Opera 51+
- Safari 12+
See related RFC:
- Closes#33227
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
Inline a react and react-dom for app dir, when `appDir` flag is enabled
opt into the built-in version for all.
For server layer react, use the react share subset for server
components.
For all server side of react-dom usage, use the server-rendering-stub.
Co-authored-by: Shu Ding <g@shud.in>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
The `target: serverless` config was deprecated a year ago starting in
[Next.js 12](https://nextjs.org/blog/next-12).
Tests were disabled in #41252 so we can now remove `target: serverless`
and all usage of `target` in `next.config.js`.
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This ensures we properly clear the `sc_client` component cache from
`react-server-dom-webpack` in development so that HMR works properly
after a refresh.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
Fixes: [slack
thread](https://vercel.slack.com/archives/C043ANYDB24/p1666051202574509)
Add failing test for the back button download bug. Created it as a new
app given that adding it to the existing `app` suite did not reproduce
the issue for some reason.
The underlying reason is that we need to add `Vary: __rsc__,
__next_router_prefetch__` to ensure Chrome does not cache the response
and serve it on back button.
The download was caused by the `application/octet-stream` content type,
but that was just a consequence of serving the wrong response.
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## Bug
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
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Consider the following middleware which redirects to
`/path/to#fragment`.
```ts
import { NextResponse } from 'next/server';
export async function middleware(request) {
const url = new URL('/path/to#fragment', request.url);
return NextResponse.redirect(url);
}
```
However, it actually redirects to `/path/to`, namely it discards the
fragment part in the destination URL `#fragment`. This is because
`NextURL.toString()` does not append that part. This PR fixes the bug.
## Bug
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## Feature
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PR.
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## Documentation / Examples
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There is no need to use the href as key in our case because it's pure
during SSR and it won't re-order on the client. By using `index` we can
avoid some duplicate bytes here:
## Bug
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## Feature
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PR.
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## Documentation / Examples
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- Enable newNextLinkBehavior. See #36436
- Run next/link codemod on test suite
Note that from when this lands on apps trying canary will need to run
the new-link codemod in order to upgrade.
Ideally we have to detect `<a>` while rendering the new link and warn
for it.
Co-authored-by: Steven <steven@ceriously.com>
fixes https://github.com/vercel/next.js/issues/41456
When we check if app folder exists, check for src/app path too
## Bug
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PR.
- [ ] Related issues linked using `fixes #number`
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Co-authored-by: Jiachi Liu <inbox@huozhi.im>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Fixes#39262
The solution is to call `stream.push(null)` to trigger the `end` event
which allows `getRawBody` to run completely.
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## Bug
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- [x] Integration tests added
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## Feature
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PR.
- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Hannes is going to change the approach to be compatible with static.
## Bug
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## Feature
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## Documentation / Examples
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The PR continues from #41392.
In #41392 the `dev ? cache-busting : empty` is executed per stylesheet instead of per page rendering. Since rendering link tags would be a hot path at the server, it might have accidentally introduced a performance overhead. The PR fixes that.
Note, this change also makes `Date.now()` only execute once instead of per stylesheets, however, this will most likely not cause any issues.
Moves where the validation is made to make sure the error reaches the
client. Tests that an error overlay is shown on the client.
## Bug
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## Feature
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feature request has been accepted for implementation before opening a
PR.
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- [ ] Integration tests added
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## Documentation / Examples
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- [ ] The "examples guidelines" are followed from [our contributing
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
This ensures we don't re-use edge workers locally as they are meant to
be isolated.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
Fixes: [slack
thread](https://vercel.slack.com/archives/C035J346QQL/p1665708744315109)
In this PR, I'm inlining the require for some of the modules that I
noticed take a bit of time to evaluate on a cold boot and are not needed
most of the time.
With this, it's an extra ~15ms win on cold boots (tested locally) and we
are now at around 68ms (started from 110+).
## Bug
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## Feature
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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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The `ReadOnlyHeaders` class extends the `Headers` class that is provided
via a polyfill. This incurs some costs the first time it's created
because we need to load that polyfill. This saves approximately 10ms on
my machine on a cold request.
This is only useful when a user does not access headers during the
request of course and when the runtime does not support fetch naitvely.
## Bug
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## Feature
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PR.
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## Documentation / Examples
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Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Fixes tree shaking for font loaders in server components.
## Bug
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## Feature
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## Documentation / Examples
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The PR continues from #41164.
`next/script` with `beforeInteractive` should not block the hydration,
**but the `polyfill-nomodule` *should* block the hydration** (and should
be loaded before other scripts), as `polyfill-nomodule` includes
multiple polyfills to even execute `main-app.[hash].js` properly on old
browsers (`Array.prototype.includes`, `String.prototype.startsWith`,
etc.).
Without `polyfill-nomodule` being loaded first, the entire
bootstrap/hydration process might not even work on old browsers. So it
should not be loaded through `__next_s`.
cc @shuding
Co-authored-by: Shu Ding <g@shud.in>
The way we currently track server CSS imports is to collect CSS files that each **module** depends on. This happens on the module graph level which is a global thing and cannot be tree-shaken properly (check the enabled test for more details).
In this PR we collect another information, of CSS files that each **entrypoint** depends on. This is the CSS list after tree-shaken on the entry level. By intersecting these CSS imports with the module-level CSS imports, we can get the final used CSS imports for each _layout_.
cc @hanneslund
## Bug
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## Feature
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## Documentation / Examples
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## Bug
The error which is thrown if the fetch method returns not a falsy or
Response value
is misleading.
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Same as https://github.com/vercel/next.js/pull/41322 we inline the usage of this module because it's heavy and not always used on regular servers + not used at all on minimal mode
## Bug
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## Feature
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## Documentation / Examples
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## Context
I'm investigating cold boot perf
## This PR
Did some manual analysis on next cold boot for the "regular" node target
and found out that we are spending a good 10ms evaluating the edge
runtime module when we shouldn't be in most cases.
This is a quick fix to only load it when actually required.
## Test plan
I have a simple script which I'll push in a separate PR to measure the
cold boot.
Results:
before:
<img width="230" alt="image"
src="https://user-images.githubusercontent.com/11064311/195073994-c3d28961-5d22-401f-a4b0-026c791ff2bd.png">
after:
<img width="275" alt="image"
src="https://user-images.githubusercontent.com/11064311/195073941-a0897532-6e9f-482d-a1f0-8b9c9231c6b0.png">
it appears to be a 10~15ms win on cold boot
## Following up
We probably want a separate NextMinimalServer type of build?
## Bug
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## Feature
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PR.
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## Documentation / Examples
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This updates to skip the data request done during query hydration when
middleware is present as it was mainly to gather query params from any
potential rewrites in middleware although this is usually not needed for
static pages and the context can be gathered in different ways on the
client.
x-ref: [slack
thread](https://vercel.slack.com/archives/C045FKE5P51/p1665082474010149)
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
When using `@next/font/local` we can't have pre calculated metrics for the font. This PR uses fontkit to read metadata about the imported local font in order to generate a fallback.
Also removes some props from the api that's better done automatically in the future.
## Bug
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## Feature
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## Documentation / Examples
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This PR ensures that for the app directory, `beforeInteractive`, `afterInteractive` and `lazyOnload` scripts via `next/script` are properly supported.
For both `beforeInteractive` and `afterInteractive` scripts, a preload link tag needs to be injected by Float. For `beforeInteractive` scripts and Next.js' polyfills, they need to be manually executed in order before starting the Next.js' runtime, without blocking the downloading of HTML and other scripts.
This PR doesn't include the `worker` type of scripts yet.
Note: in this PR I changed the inlined flight data `__next_s` to `__next_f`, and use `__next_s` for scripts data, because I can't find a better name for `next/script` that is also short at the same time.
## Bug
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## Feature
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## Documentation / Examples
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Move react-dev-overlay into hot reloader client components, and let it imported by app router. So then we don't need to have hot reloader and react tree as adjacent sibilings but the overlay with error boundary is wrapping the react tree
Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
Changes how font loaders are configured in next config, makes more sense since options can be optional. Also adds error for when font loaders are used from within node_modules.
## Bug
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## Feature
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## Documentation / Examples
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Finds the font files connected to font loader modules and adds them to
the font loader manifest. They're then collected and rendered similarly
to CSS links in app-render.
The behaviour of edge-function-runtime in the case of an error was not
identical to the edge-runtime.
If a type other than "Uint8Array" is written to the Response stream a
unhandledreject is raised and logged.
The current implementations(nodejs) accepts also Buffers and Strings
which causes that a Application
Developer things our stream implementation is broken if it is executed
as worker.
We introduced a helper function to consume the response stream and write
the "Uint8Array" stream chunks
to the server implementation. Due to the complication that the error
side effect is emitted via the unhandledrejection
handler it is almost impossible to test --- jest does not allow testing
of the unhandlerejections.
We tested extendsiveliy the helper in the edge-runtime so that this PR
integrates just the consuming function.
## Bug
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## Feature
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PR.
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## Documentation / Examples
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Partially addresses #41111
## Bug
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## Feature
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## Documentation / Examples
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Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
We're supposed not to use css-in-js in server components since it will
increase the rsc response for navigation. Also adding `styledJsx` option
for next-swc for controlling styled-jsx transform.
Test case: using styled-jsx transform in server components will not be
transformed to `styled-jsx/style` imports.
- Add a failing test for navigating between many levels of dynamic routes
- Create router tree during prefetch action so that it can be reused across multiple urls
- Ensure segmentPath is correct when rendering a subtree. Previously it would generate a segmentPath that starts at the level it renders at which causes the layout-router fetchServerResponse to inject `refetch` at the wrong level.
- Fixed a case where Segment was compared using `===` which is no longer valid as dynamic parameters are expressed as arrays. Used `matchSegment` helper instead.
## 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.
- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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- [ ] The "examples guidelines" are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
## Bug
Noticed the warning messages don't have spaces. Just adding spaces for better messaging.
<img width="1714" alt="image" src="https://user-images.githubusercontent.com/1635852/193907658-f3c7d90b-1b91-44bf-b93b-915ab4a635f1.png">
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
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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`
- [ ] Integration tests added
- [ ] Documentation added
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## Documentation / Examples
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This applies the experimental configs for testing and also fixes
`set-cookie` headers from middleware/edge functions being merged
unexpectedly.
x-ref: [slack
thread](https://vercel.slack.com/archives/CGU8HUTUH/p1664313529422279)
Fixes: https://github.com/vercel/next.js/issues/40820
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
Include the edge server changes that starting in app dir into server components changes. Most changes are merging condition `isAppPath && this.appDir` into `isAppPath`.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
This commit implements the main proposal presented in
https://github.com/vercel/next.js/issues/39241
to add attribution to web vitals.
Attribution adds more specific debugging info to web vitals,
for example in the case of Cumulative Layout Shift (CLS),
we might want to know
> What's the first element that shifted when the single largest layout shift occurred?
on in the case of Largest Contentful Paint (LCP),
> What's the element corresponding to the LCP for the page?
> If it is an image, what's the URL of the image resource?
Attribution is *disabled* by default because it could potentially
generate a lot data and overwhelm the RUM backend.
It is enabled *per metric* (LCP, FCP, CLS, etc)
As part of this change, `web-vitals` has been upgraded to v3.0.0
This version contains minor bug fixes, please see changelog at
9fe3cc02c8Fixes#39241
## 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.
- [x] 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.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [x] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
Inspects the stream of rendered HTML in dev to make sure all required tags are rendered. Since navigating to a new root layout causes a full page navigation we don't have to worry about flight requests.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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
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Fixes local weight type which could break if you wrote "regular" instead of 400. Adds `variable` property to google font loader to let you define the name of the CSS variable.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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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- [ ] Errors have a helpful link attached, see `contributing.md`
## Documentation / Examples
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Finds the root layout segments for flight requests. If those segments doesn't match the FlightRouterState it's a new root layout and a full page reload is required.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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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- [ ] Errors have a helpful link attached, see `contributing.md`
## Documentation / Examples
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- [ ] The "examples guidelines" are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
Rename `optoutServerComponentsBundle` to `serverComponentsExternalPackages` which describes the feature better.
## Bug
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## Feature
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- [ ] Integration tests added
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## Documentation / Examples
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Ensures the static generation case is covered. Checks
application/octet-stream client-side, if it's not does a full page
navigation.
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## Bug
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## Feature
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PR.
- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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- [ ] The "examples guidelines" are followed from [our contributing
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This PR makes sure that the same polyfills are added in app dir for
browsers that match `nomodule`. Main difference from the polyfills in
pages is that the script tags here cannot have `defer` as all other
scripts will be async by default, and polyfills must be executed before
all of them.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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`
- [x] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a 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/examples/adding-examples.md)
Alias all existing imports from `next/dist/..` to `next/dist/esm` for edge compiler. So that we don't need checking for `process.env.NEXT_RUNTIME === 'edge'` or passing down `nextRuntime` to decide wether the esm or cjs asset to require
This will also fix the issue that some layouts hook are been included twice into the bundle with cjs and esm bundle in edge runtime, now only esm chunk will be bundled in server.
When possible (`ReactRoot` enabled), we always use
`renderToReadableStream` to render the element to string and drop all
`renderToString` and `renderToStaticMarkup` usages. Since this is always
true for the Edge Runtime (which requires React 18+), so we can safely
eliminate the `./cjs/react-dom-server-legacy.browser.production.min.js`
module there
([ref](https://unpkg.com/browse/react-dom@18.2.0/server.browser.js)).
This reduces the gzipped bundle by 11kb (~9%). Let me know if there's
any concern or it's too hacky.
<img width="904" alt="image"
src="https://user-images.githubusercontent.com/11064311/192544933-298e3638-13ba-436d-9bcb-42dfb1224025.png">
## 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)
Co-authored-by: Jimmy Lai <laijimmy0@gmail.com>
Adds support for generating a fallback font by providing font override
metrics for the given local font. Also adds support for providing a CSS
variable name that then can be accessed through the `.variable` export,
it contains the hashed font family name.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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 a 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/examples/adding-examples.md)
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Re-do of https://github.com/vercel/next.js/pull/40251
Edge SSR'd routes cold boot performances are proportional to the
executed code size.
In order to improve it, we are trying to optimize for the bundle size of
a packed Edge SSR route.
This PR adds ESM compilation targets for all Next.js dist packages and
use them to bundle Edge SSR'd route.
This allows us to leverage the better tree shaking/DCE for ESM modules
in webpack in order to decrease the overall bundle size.
This PR also enables minifying Edge SSR routes. Since we don't control
which minifier might be used later (if any), it's best if we provide an
already optimised bundle.
<img width="903" alt="image"
src="https://user-images.githubusercontent.com/11064311/190005211-b7cb2c58-a56a-44b0-8ee4-fd3f603e41bd.png">
This is a 10ms cold boot win per my benchmarking script, which I'll put
in a subsequent PR.
Not done yet:
- ~~swap exported requires in `next/link` (and others) etc to point them
to the esm modules version~~
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Shu Ding <g@shud.in>
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## Bug
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- [ ] Integration tests added
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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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- [ ] The "examples guidelines" are followed from [our contributing
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Shu Ding <g@shud.in>
This reverts commit 11deaaa82b.
Temporarily reverts the above commit due to breaking middleware/edge
functions once deployed.
Fixes:
https://github.com/vercel/next.js/actions/runs/3133433920/jobs/5087331787
cc @shuding @feedthejim
```sh
[GET] /blog/first
13:56:56:61
2022-09-27T20:56:56.671Z 61d43a6a-34a1-40c0-b71f-4ae5d1918431 ERROR /var/task/node_modules/next/dist/esm/client/router.js:1
/* global window */ import React from 'react';
^^^^^^
SyntaxError: Cannot use import statement outside a module
at Object.compileFunction (node:vm:352:18)
at wrapSafe (node:internal/modules/cjs/loader:1033:15)
at Module._compile (node:internal/modules/cjs/loader:1069:27)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Module.require (node:internal/modules/cjs/loader:1005:19)
at require (node:internal/modules/cjs/helpers:102:18)
at Object.<anonymous> (/var/task/node_modules/next/router.js:3:7)
at Module._compile (node:internal/modules/cjs/loader:1105:14)
```
This PR adds a new `experimental.enableUndici` option to let the
developer switch from `next-fetch` to `undici` as the underlying
polyfill for `fetch` in Node.js.
In the current implementation, Next.js makes sure that `fetch` is always
available by using `node-fetch`. However, we do not polyfill in Node.js
18+, since those versions come with their own `fetch` implementation
already, built-in.
Node.js 18+ uses `undici` under the hood, so letting the developer use
`undici` earlier could make the migration easier later on.
Eventually, we hope to be able to stop polyfilling `fetch` in an
upcoming major version of Next.js, shipping less code.
## 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)
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Co-authored-by: Sukka <isukkaw@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Steven <steven@ceriously.com>
As discussed with @sebmarkbage, the handling is more about showing a not found component than it is about a specific status code as these can come in late with streaming.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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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- [ ] Errors have a 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/examples/adding-examples.md)
Merge e2e tests customized `node_modules` with installed `node_modules`,
to let you debug easily locally without moving folder between
`node_modules` and `node_modules_bak`
Also add `optoutServerComponentsBundle` to config schema.
Since React 18 returning `undefined` from components is allowed which renders to `undefined` in the RSC response so we need a separate prop to know if the loading boundary was provided.
Thanks to @finn-orsini who reported this problem.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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 a 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/examples/adding-examples.md)
Currently, a developer building a website using Next.js could write this
code with no type errors:
```tsx
<Image
width="kangaroo"
height="100px"
quality="medium"
{...rest}
/>
```
This PR adds stricter type checking, which will catch this type of error
earlier.
Similarly, this PR adds stricter types for the `responseLimit`, to
ensure the types align to:
https://nextjs.org/docs/messages/api-routes-response-size-limit
Co-authored-by: Steven <steven@ceriously.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
# Context
Edge SSR'd routes cold boot performances are proportional to the
executed code size.
In order to improve it, we are trying to optimize for the bundle size of
a packed Edge SSR route.
This PR adds ESM compilation targets for all Next.js dist packages and
use them to bundle Edge SSR'd route.
This allows us to leverage the better tree shaking/DCE for ESM modules
in webpack in order to decrease the overall bundle size.
This PR also enables minifying Edge SSR routes. Since we don't control
which minifier might be used later (if any), it's best if we provide an
already optimised bundle.
<img width="903" alt="image"
src="https://user-images.githubusercontent.com/11064311/190005211-b7cb2c58-a56a-44b0-8ee4-fd3f603e41bd.png">
This is a 10ms cold boot win per my benchmarking script, which I'll put
in a subsequent PR.
Not done yet:
- ~~swap exported requires in `next/link` (and others) etc to point them
to the esm modules version~~
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Shu Ding <g@shud.in>
Follow-up for #40739 to add an option to opt-out specific packages from being bundled.
## Bug
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- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
## Feature
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- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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- [ ] The "examples guidelines" are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
When navigating from app to pages, we do a flight render on the server
to generate the redirected path. However due to our new bundling
strategy we can't use the bundled `ComponentMod.renderToReadableStream`
because the component is now a regular component, not a RSC. In that
case we have to import the unbundled flight server.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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 a 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/examples/adding-examples.md)
This updates to ensure we properly error during static generation when a
non-dynamic SSR error is thrown so that unexpected errors are not
tolerated. This also fixes the static generation async storage not being
shared correctly due to different instances being created during
bundling.
For some context:
[https://vercel.slack.com/archives/CGU8HUTUH/p1662124179102509](https://vercel.slack.com/archives/CGU8HUTUH/p1662124179102509)
Continuation of #40221 and #40227
Adds `experimental.fontLoaders`.
SWC next-font-loaders (#40221) transforms font loader (e.g. #40227) call
expressions into an import with the function call arguments as a query.
The imports will be matched by `next-font-loader`. It runs the
configured font loaders - emits font files and returns CSS. Exports are
added, and the font-family is made locally scoped. The returned CSS is
turned into a CSS module with `css-loader` which lets you consume the
font-family.
`FontLoaderManifestPlugin` creates a manifest of the preloaded font
files for each entrypoint. Preload/preconnect are then added in
`_document.tsx` if any font files were found for that path.
Co-authored-by: JJ Kasper <jj@jjsweb.site>
For some context:
https://vercel.slack.com/archives/CGU8HUTUH/p1662124179102509
Adds `@next/font` package.
`scripts/update-google-fonts.js` generates functions and metadata for
all available google fonts. The metadata is used in `loader.ts` to
validate font options (from #40221). It then fetches the CSS from google
fonts, downloads the font files and emits them as static assets.
The actual integration with `packages/next` and integration tests
depends on #40221, will follow up with new PR.
Co-authored-by: JJ Kasper <jj@jjsweb.site>
`config.experimental.serverComponents` is currently required to be
enabled or disabled together with `config.experimental.appDir` (which
means `serverComponents === appDir` otherwise it will throw) so there is
no reason to keep both of them. This PR removes `serverComponents` from
Next.js and only rely on `appDir` instead.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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 a 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/examples/adding-examples.md)
This PR changes the external module resolution to eagerly bundle
node_modules, and some specific Next.js internal modules, if on the
`WEBPACK_LAYERS.server` layer. While resolving corresponding packages,
we use the `react-server` export condition (fallbacks to default).
A follow-up PR will be adding a Next.js option to opt-out specific
packages from being bundled on the server layer.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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`
- [x] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a 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/examples/adding-examples.md)
Leverages `AsyncLocalStorage` when available for handling static generation context and falls back to requiring render to be isolated when `AsyncLocalStorage` is not available.
Note: most changes are spacing so toggling to ignore spacing may make reviewing easier
Ensures Flight responses are not loaded as HTML.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a 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 a 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/examples/adding-examples.md)
## Feature
Change server components convention from using `.server.js` / `.client.js` file extension to determine it's a server or client component to using `'client'` js literal as a directive for determine client components boundary.
React RFC: https://github.com/reactjs/rfcs/pull/189
New behavior doesn't consume `.server.js` as server components any more, if you're enabling `serverComponents` flag, every `page.js` in app dir will become server components by default. If you adding a `'client'` directive to the page, then that page will become a client component. This rule also applies to the normal js components, client components will require a `'client'` directive to indicate its identity, instead of having a `.client.js` extension.
- [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`
Co-authored-by: Shu Ding <3676859+shuding@users.noreply.github.com>
<!--
## 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`
- [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`
## Documentation / Examples
- [x] 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)
- [ ] -->
## Feature
- [x] Implements https://github.com/vercel/next.js/discussions/40112
- [x] Integration tests added
Adds a new option to the current font optimization to enable
experimental font size adjust
The new `optimizeFonts` config will be
```
optimizeFonts: {
inlineFonts: true,
experimentalAdjustFallbacks: false,
},
```
To enable the feature, set `experimentalAdjustFallbacks: true`
`optimizeFonts: false` will disable the entire feature (including
inlining google font definition)
Co-authored-by: JJ Kasper <jj@jjsweb.site>
x-ref: https://github.com/facebook/react/pull/25267
Bump the version of `react-server-dom-webpack` and use `experimental_use` to unwrap the promise to access RSC payload instead of using `readRoot`. `readRoot` is removed from the response type.
