## History
In PR #24153, `placeholder=blur` was added and it set `element.style.backgroundImage = 'none'` instead of using react state to re-render. Then in PR #25916, a delay was added to handle removing the blur placeholder. Then in PR #25994, `img.decode()` was utilized but we found this caused problems in Firefox in #26011.
## Today
This PR changes the the blur placeholder removal to use react state to re-render. This _should_ prevent Firefox from erroring although we should probably keep the catch() just in case. This was pointed out when React 18 caused subtle differences in Firefox in this comment https://github.com/vercel/next.js/issues/30128#issuecomment-1086754374
This updates our `yarn next` command to leverage react v18 by default and removes the need for the test require hook/config modifying when testing react 18. There are some fixtures we need to investigate react 18 support in follow-ups:
- `test/integration/client-navigation-a11y`
- `test/integration/critical-css`
- `test/integration/custom-error-page-exception`
- `test/integration/font-optimization`
- AMP specific tests
x-ref: #33149
RFCs:
- #30996
- #31506
## 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`
* fix(#35286): reset visible state when image src changed
* fix(#35286): reset visible state when link href changed
* test(image): image with new src should be re-lazyloaded
* test: apply code suggestions from @styfle's review
* test: incorrect condition of image load check
This fixes an issue with how the sizes prop was being applied to images with the experimental raw layout. The only effects were on the raw layout, so won't effect any non-experimental functionality.
Part of #31506 and https://github.com/vercel/next.js/discussions/34179. This PR ensures that in the `nodejs` runtime, the flight data is statically stored as a JSON file if possible. Most of the touched code is related to conditions of static/SSG/SSR when runtime and/or RSC is involved.
## 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`
Collect telemetry info about packages are used and eliminated in `getServerSideProps`
https://github.com/vercel/next-telemetry/pull/71
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
x-ref: #35728
The hydration mismatch is fixed by #35732, that document could collect the dyamic imports module ids before the shell is flushed. Add a test for it
Static optimization is now supported with concurrent features, this PR fixes the condition for `useStatic404`.
## 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`
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
Minor improvements to the integration test runner to emit process's stdout when its execution failed.
We have `console.log` for the output, but it doesn't emit actually since jest suppresses console output unlesss _assertion_ fails. If we throws in `before*` hook, since there's no actual assertion fails jest won't release captured console logs.
PR adds one straightforward workaround (https://stackoverflow.com/questions/48695717/console-log-statements-output-nothing-at-all-in-jest) to emit if process exits with non-zero errorcode. To avoid any existing behavior, this is not enabled for the cases when process successfully exits.
## 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`
- [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
- [ ] Make sure the linting passes by running `yarn lint`
* fix the dynamic routing of middleware
* add middleware to dynamicRoutes of routes-manifest
* remove unused import
* fix middleware routing with static paths
* update manifest version test
* prevent to match with api route using regex
* use iterator instead of generator
* do not use Iterator
* fix type
* fix type
* remove unused import
* apply the fix for support colons
Co-authored-by: JJ Kasper <jj@jjsweb.site>
### source changes
* Error dynamic suspense option in non concurrent mode, don't check react root anymore since they should be bound
### tests changes
* Remove duplicated rsc client test
* Merge type checking cases (`next/dynamic`)
* Remove blocking rendering tests cases since we should opt-in Fizz rendering when using React.lazy
* Remove some thrown promises cases, leverage the streaming component we had in RSC test
In this test we are mainly focusing on the SSR'd result so hydration is't critical, but it will definitely help to get rid of these hydration errors.
## 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 package manager detection which was changed slightly in https://github.com/vercel/next.js/pull/34947 for `pnpm` support to ensure the default case still attempts detecting the available package manager if no preference is specified in the command args. This also adds a test case to ensure the install succeeds when we fail to detect a valid `yarn` binary and no preference is set via the `npm_config_user_agent` env variable.
## 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/35607
Fixes: https://github.com/vercel/next.js/issues/35599
We need to handle cjs cases for client/server components when they're compiled to commonjs in some cases.
e.g. if there's an internal `_app.server.js` in nextjs, the assets in the dist files are compiled to cjs by swc. Or any 3rd party libraries are consumed could be cjs only.
### How it works
* Detect the source file is ESM or CJS first by detect if there's any ESM import/export
* Append the new exports or collect exports info based on the module type
.substr() is deprecated so we replace it with .slice() which works similarily but isn't deprecated
Signed-off-by: Tobias Speicher <rootcommander@gmail.com>
Co-authored-by: Steven <steven@ceriously.com>
I noticed a few issues that had "Output from `next info`" with the first line as
```
/bin/sh: pnpm: command not found
```
This was because `execSync()` was still printing to stderr when a command was not found.
Changing to `execFileSync()` fixed it so we no longer print to stderr when a command is not found.
* Update next/link error when no children are provided
* update manifest
* Apply suggestions from code review
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Currently we ignore any files that are traced and handled by a webpack loader to prevent including webpack specific files although users may attempt reading files directly using `fs` even if they are handled by webpack so this leverages the new reason types in `@vercel/nft` to only ignore if it is solely imported.
## Bug
- [ ] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
x-ref: https://github.com/vercel/next.js/pull/35338
Basically the revert change of #31187
The fouc tag are rendered in first place, and the removing fouc tags script is executed before hydration which is early enough. This will unblock the dev mode of global CSS development
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
### Bugfix
Made some changes for the data register buffer flushing in #34631 and #34475 that tried to delete the buffer or flush them only once. But turns out it will break the navigation between RSC pages.
### Enhancements
Simplify the inline response writer and inline response data for the initial render. Since they're only for the initial render, navigations will leverage the serialized data fetched from router and construct the react tree.
## Bug
Fixes#35135
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Related to #31678
For streaming pages,
Nodejs runtime: setting global runtime to `"nodejs"` will work with default module resolution.
Edge runtime: previously next.js will pick up browser field since it's the "similar" asset (unlike nodejs) to edge runtime but browser specific things like DOM api could breaks cause edge runtime is more like worker without dom runtime.
This PR is to revert the main field resolution behavior. And if you have a library targeting multiple runtime with different fields, ideally is to make it more isomorphic and will be easy to use in edge runtime
This PR depends on #35242 and #35243. It allows the global runtime to be unset, as well as enables static optimization for Fizz and RSC pages in the Node.js runtime. Currently for the Edge runtime pages are still always SSR'd.
Closes#31317.
## 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
- [ ] 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: Jiachi Liu <4800338+huozhi@users.noreply.github.com>
This PR adds a new layout mode for images called `raw`, as discussed with the core team a while back. This mode has the following characteristics:
- No wrapper `span` around the `img` element
- No sizer svg
- Almost no styles automatically added to the `img` element
- `style` parameter is allowed and is passed through to the underlying `img` element
This also adds documentation changes to describe the new component.
There are a few tradeoffs and DX decisions that may warrant discussion/revision before merging. I'll add a few comments to highlight those issues.
- Related to #18637
## Summary
This PR adds a new `worker` strategy to the `<Script />` component that automatically relocates and executes the script in a web worker.
```jsx
<Script
strategy="worker"
...
/>
```
[Partytown](https://partytown.builder.io/) is used under the hood to provide this functionality.
## Behavior
- This will land as an experimental feature and will only work behind an opt-in flag in `next.config.js`:
```js
experimental: {
nextScriptWorkers: true
}
```
- This setup use a similar approach to how ESLint and Typescript is used in Next.js by showing an error to the user to install the dependency locally themselves if they've enabled the experimental `nextScriptWorkers` flag.
<img width="1068" alt="Screen Shot 2022-03-03 at 2 33 13 PM" src="https://user-images.githubusercontent.com/12476932/156639227-42af5353-a2a6-4126-936e-269112809651.png">
- For Partytown to work, a number of static files must be served directly from the site (see [docs](https://partytown.builder.io/copy-library-files)). In this PR, these files are automatically copied to a `~partytown` directory in `.next/static` during `next build` and `next dev` if the `nextScriptWorkers` flag is set to true.
## Checklist
- [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.
This PR fixes#31517.
Previously we only run `PagesManifestPlugin` in the Node server runtime, because the Edge target doesn't need it as the web server and middleware SSR loader specially handled pages manifest. This cases entrypoints with the Edge runtime configured being missing from there and this PR fixes it.
Part of #31317 and #31506.
## 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`
* Fix the static streaming render result isn't the resolved streaming rendering content (resolve suspense)
* Update readable stream polyfill to fit the w3c standard
Partially implements #31317 and #31506. There're also some trade-offs made with this PR: since we can't know if a certain runtime will be used or not beforehand, we have to start both runtime compilers (Node.js and Edge) and then generate entrypoints correspondingly.
Note that with this PR, the global runtime is still required to use the per-page runtime.
## 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`
fixes https://github.com/vercel/next.js/issues/34199
Also fixes response code to return `500` when showing error page of preflight request failure on dev mode
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
* feat: support `pnpm` with `create-next-app`
* test: add `--use-pnpm` tests
* docs: mention `--use-pnpm` flag in docs
* test: remove `only`
* Update test/integration/create-next-app/index.test.ts
Co-authored-by: Steven <steven@ceriously.com>
* chore: add pnpm action setup to tests
* chore: use latest pnpm
* chore: debug
* chore: debug
* fix: fall back to `yarn` instead of `npm`
* test: run all tests
Co-authored-by: Steven <steven@ceriously.com>
* Add failing colon rewrite test
* add test fixture
* better colon rewrite tests
* middleware rewrite colon tests with query parameters
* fix#31523
this addresses the symptom but the real systemic issue is that prepareDestination is called on rewrite/redirect URLs, which have no defined special behavior for colons and they should not be compiled at all
* hack around prepareDestination to skip compiling x-middleware-rewrite
this is a bit nicer than just escaping colons, but ideally we find a way to obviate prepareDestination
* obviate prepareDestination for x-middleware-rewrite handling
* don't clobber rewrite query data
* omit redundant type
* catch up to main
* It looks like newUrl should contain only pathname
Co-authored-by: Naoyuki Kanezawa <naoyuki.kanezawa@gmail.com>
### Changes
* Remove top-level suspense boundary
* Pipe stream resolved from returned promimse of `renderToReadableStream`
* Remove jsx-runtime alias hack
### Test Changes
Since top level suspense boundary is removed, now content are filled in 1st SSR
Closes#33538.
## 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`
This gracefully handles errors when the `url` query string param looks like an internal image because it starts with `/` but it is not pointing to an internal image.
Previously, this was printing an unnecessary stack trace when the upstream content-type was undefined.
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
x-ref: #34021 , #34004
Only log each warning once and only trigger in concurrent mode
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Adds an API config option that disables warning a user when their API response body is over 4 megs. This has been added for users who'd like to stream larger amounts of data from their API acknowledging the drawbacks. This config mirrors the existing [`externalResolver` config](https://nextjs.org/docs/api-routes/api-middlewares#custom-config).
Closes: [#33162](https://github.com/vercel/next.js/issues/33162)
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
This commit adds functionality to track usage of `@next/next/*` ESLint rules and their severity levels.
## 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`
- [x] Integration tests added
- [ ] Documentation added
- [x] 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`
By moving `setRevalidateHeaders` to a separate file we can shake off the dependency of `etag` and a polyfill for `Buffer` from the web server (which brings hundreds of kilobytes).
## 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 the `X-Powered-By` and `Content-Type` headers to responses sent by the web server. The latter enables compression for the Edge runtime. Still, the web server doesn't have `Content-Length` and `ETag` as the response is usually dynamic.
Part of #31506.
## Bug
- [x] 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`
## Bug
If there's upcoming streaming data from server components, should safely skip the bootstrap process. Previously we deleted the buffer then it will cause the buffer is missing in the later re-renders. Now we mark it as empty array, so it can safely skip the boostrap phase
x-ref: #34475
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Currently, we print warnings during `next dev` for every render of `next/image`, which can quickly fill the console making it really unfriendly to developers trying to read the logs.
This PR changes the behavior so that each unique warning prints at most once.
- Related to #33007
- Related to #31340
## Bug
Fixes: #31993
* Remove the simple component checking in middleware ssr
* Leverage existing components checking for Component / App / Document, if any of these component is not valid react type or is undefined nextjs will error in dev mode with redbox. Like above.
<img width="826" alt="image" src="https://user-images.githubusercontent.com/4800338/154668945-bcee24ee-17aa-4afd-acda-9f8b249891ac.png">
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
Fixes the problem that global `process` variable has only the `env` field.
Also fixed the issue that the `env` field is empty when the `process` module is used as the value of the variable (which happens when the module is contained in a dependency of application).
## Bug
- [ ] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
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
## Bug
Fixes#34464
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
* Update server-only changes HMR handling
* Add failing tests for GS(S)P server only changes
* update test
* normalize backslashes
* Update to xor the chunk hashes
* remove test change
* remove other test change
To collect the requests starting from page load, we need to register event listeners before page loading (`page.goto` API invocation). By default webdriver will wait for hydration, so we need to register events inside `browser.loadPage` to ensure we can collect the requests before hydration is done.
### Changes
* Add `beforePageLoad` for next webdriver
* registry page `'request'` event before loading page
* update related tests for agruments change
### Usage
```js
browser = await webdriver(appPort, '/path', {
waitHydration, // default true
retryWaitHydration, // default false
disableCache, // default false
beforePageLoad, // default undefined
})
```
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.
As the comment mentioned, React 18 with Strict Mode enabled might cause double invocation of lifecycle methods. This makes the `<RouteAnnouncer/>` being non-empty for the initial page, which is a bug (it should only announce page change whenever a navigation happens).
## 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`
### Changes
* node server and webpack should share the same logic: auto detect react 18 and enable `reactRoot`
* fallback `_error` should use functional document if concurrent rendering is enabled
### Test
* Remove the hard code `reactRoot: true` in test suite
* Test some react-18 test suite with nodejs runtime
This PR ensures that the test "should render 500 error correctly" doesn't break when `runtime` is set to `nodejs` with `serverComponents` enabled.
This test case is now moved to the "basic" suite to ensure it doesn't break in both runtimes. And "should not bundle external imports into client builds for RSC" is enabled for the `nodejs` runtime too.
## 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`
### Fixes
* We need give value for `__flight__` query or it will lost in node runtime
* Match the cache key of flight response (`path + search`, `route, `id`)
* Flight response should return `200` instead of `404` for 404 page
### Tests
* Run rsc for node runtime test suite
* Add more cases for 404
* Fix bug with "Circular Structure" error
Since `-1` is truthy, every JSON.stringify error is mistaken to be `circular structure`. This commit fixes that behaviour, so that other errors like `Do not know how to serialize Bigint` (see https://github.com/blitz-js/babel-plugin-superjson-next/issues/63) aren't swallowed.
* Add integration test
This may be thought of as being a pretty contrived example, but it's exactly what happened in https://github.com/blitz-js/babel-plugin-superjson-next/issues/63.
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Mark some previously experimental swc compiler options as stable under a new `compiler` option
## 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`
Fix the wrong filename evaluation of `MIDDLEWARE_FLIGHT_MANIFEST` in required files. Besides checking the generated files, check if they're declared correctly in `required-server-files.json`
The `export default xxx` statement is slightly different from estree when exporting an arrow function instead of identifier in swc.
We also need to capture arrow exports.
We should remove `.next` after checking the manifest file here.
## 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`
Fixed lazyRoot functionality (#33290). Changed the unique id for Intersection Observers discrimination since previously they were only identified by the different rootMargins, now each being identified by the rootMargin and the root element as well
Added more Images to the test with different margins and with/without lazyRoot prop. Browser correctly initially loading two of the four Images according to the props' specifications.
Co-authored-by: Steven <steven@ceriously.com>
- Add support for async function / promise export in next.config.js/.mjs
- Update docs
Adds support for https://twitter.com/timneutkens/status/1486075973204422665
But also the simpler version:
```js
module.exports = async () => {
return {
basePath: '/docs'
}
}
```
## 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
## Documentation / Examples
- [ ] Make sure the linting passes by running `yarn lint`
* 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>
Currently, if you render `next/link` like
```ts
<Link>
<CustomComponent />
</Link>
```
and have
```tsx
interface Props {
onClick?: () => void; // <— note we're not passing event as an argument
}
function CustomComponent({ onClick }: Props) {
return <div onClick={() => onClick?.()}>Hello</div>
}
```
It'll result in error
```
link.js?f421:21 Uncaught TypeError: Cannot read property 'defaultPrevented' of undefined
```
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## 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
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
## Bug
The `nodeName` of an anchor inside an SVG equals the lowercase `a` instead of the html anchor's uppercase `A`.
This behavior can be seen in this plain js demo: https://jsfiddle.net/L2p8f4ve/28/fixes#23252
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
## 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.
## Documentation / Examples
- [ ] Make sure the linting passes
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
## Feature
Follow up for #33770
* When page config specify runtime is "nodejs", remove runtime option in functions manifest;
* If user enable `concurrentFeatures` and filesystem api, use `runtime: "web"` for those pages;
- [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
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>
Instead of branching rendering based on Node.js and browser/web runtimes, we should just use the web version for now, which can run as-is on versions >=16.5.0 of Node.js, polyfilling `ReadableStream` on older versions when necessary.
There are a few potential downsides to this, as React is less able to optimize flushing and execution. We can revisit that in the future though if desired.
This ensures we always transpile optional chaining and nullish coalescing with swc the same as we do [with babel](4812e22992/packages/next/build/babel/preset.ts (L97-L98)) since it can cause issues with webpack even when the node target supports these features.
The specific case this seems to cause issues with webpack is when a value is imported and optional chaining is used on the import value webpack is stripping the optional chaining cc @sokra
## 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/33915
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
Move undocumented `next/rsc` and `next/vitals` to `next/streaming`. In the future `next/streaming` can contain streaming SSR related (including react server components) APIs together.
fixes https://github.com/vercel/next.js/issues/31827
## 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`
## Bug
fixes#32631
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
## Bug
- [x] Fixes#33809
- [x] Related to #33218
- [x] Integration tests added: Usage of [html-validator](https://www.npmjs.com/package/html-validator) to validate the HTML.
- [x] Errors have helpful link attached, see `contributing.md` (N/A)
## 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
In PR #26968, we added Set of loaded images that was removed in #33474 erroneously.
We still need to track loaded images since we can't rely on `img.complete`, especially if the parent uses `react-virtualized`.
Tested on https://nextjs.org/showcase
Fixes the merge conflicts in #27003Fixes#24977Fixes#24047Closes#27003
Co-Authored-By: Jamie <5964236+jamsinclair@users.noreply.github.com>
## 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 allows to have a more streamlined API for rewrites.
Since middlewares are code and not static configurations, we can allow people to
delete query params and not just overwrite them.
**⚠️ Warning ⚠️** this is a breaking change in query parameter behavior with middlewares, but the API will make more sense now. Compare the following:
```diff
import {NextResponse} from 'next/server'
export default function middleware({ nextUrl }) {
- nextUrl.searchParams.set('ignored-query-param', '');
+ nextUrl.searchParams.delete('ignored-query-param'); // 🎉
return NextResponse.rewrite(nextUrl);
}
```
Since this is breaking change, we're adding a warning every time we find a query param that is missing, and eventually--the warning will be deleted.
I don't think we need to worry about older versions of Next.js as the current behavior is misleading: merging query parameters make sense for static rewrites, but not for middlewares where you have access to all the query parameters and can manipulate them freely.
Related:
* This is the opposite of #33454
* This supersedes #33574
Reorganizes the existing tests as they're getting longer.
## 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`
* Add `parse` method for next-swc
* Use shared next-swc to parse rsc components AST
* Remove the invalid case of parsing `ExportAllDecalaration` (we didn't support it well before, so I deleted. need to support later)
Co-authored-by: Donny/강동윤 <29931815+kdy1@users.noreply.github.com>
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
When an invalid image is requested, the 'finish' event is never triggered,
which ultimately leads to a 504 Gateway Timeout error.
This is fixed by invoking the 'callback' in `_write()`.
fix https://github.com/vercel/next.js/issues/33441
## 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`
## Feature
Implements feature requested in https://github.com/vercel/next.js/issues/30805.
A few people including myself have been looking to use Relay with Next.JS and want to use the new Rust Compiler. This is my stab at an implementation.
### How it works?
Finds all `graphql` tagged template experssions and replaces them with `require`s to the file generated by Relay.
### Where I need help
- I've only worked with Rust a handful of times so I would appreciate any feedback on my use of language features.
- Is there any performance overhead to many duplicate usages of `require`? I imagine there's a cache in place but I want to be sure.
- I've added some unit tests & integration tests but I might be missing some use cases. Feel free to comment some use cases I'm not thinking about.
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Documentation added
- I haven't added any docs since this is an experimental API.
## Documentation / Examples
You're expected to be running the Relay Compiler along side Next.JS when you're developing. This is pretty standard. I wouldn't expect people to have any problem with this.
### Usage
In your `next.config.js`
```js
module.exports = {
experimental: {
relay: {
language: 'typescript', // or 'javascript`
artifactDirectory: 'path/to/you/artifact/directory' // you can leave this undefined if you did not specify one in the `relay.json`
}
}
}
```
Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
(#31506 for context)
This PR implements the minimum viable web server on top of the Next.js base server, and integrates it into our middleware (edge) SSR runtime to handle all the requests.
This also addresses problems like missing dynamic routes support in our current handler.
Note that this is the initial implementation with the assumption that the web server is running under minimal mode. Also later we can refactor the `__server_context` environment to properly passing the context via the constructor or methods.
* Added 'rootEl' oprional property to next/Image component resembling 'root' option of the Intersection Observer API
* changed 'rootEl' to 'lazyBoundary' and its type as well
* added test, fixed initial root detection
* Update test/integration/image-component/default/test/index.test.js
Co-authored-by: Steven <steven@ceriously.com>
* prop names changed
* added 'lazyroot' prop to the documentation
* removed unused import
* Apply suggestions from code review
* Update docs with lazyRoot added in 12.0.9
Co-authored-by: Steven <steven@ceriously.com>
The image prop `onLoadingComplete()` was unexpectedly called multiple times because it uses a [callback ref](https://reactjs.org/docs/refs-and-the-dom.html#callback-refs).
This could lead to an infinite loop if `onLoadingComplete()` calls `setState()` as demonstrated in the updated test.
The solution is to handle refs with `useRef()` and `useEffect` so `onLoadingComplete()` is called at most once per component instance.
- Fixes#33463
We currently have inconsistencies when working with URLs in the Edge Functions runtime, this PR addresses them introducing a warning for inconsistent usage that will break in the future. Here is the reasoning.
### The Browser
When we are in a browser environment there is a fixed location stored at `globalThis.location`. Then, if one tries to build a request with a relative URL it will work using that location global hostname as _base_ to construct its URL. For example:
```typescript
// https://nextjs.org
new Request('/test').url; // https://nextjs.org/test
Response.redirect('/test').headers.get('Location'); // https://nextjs.org/test
```
However, if we attempt to run the same code from `about:blank` it would not work because the global to use as a base `String(globalThis.location)` is not a valid URL. Therefore a call to `Response.redirect('/test')` or `new Response('/test')` would fail.
### Edge Functions Runtime
In Next.js Edge Functions runtime the situation is slightly different from a browser. Say that we have a root middleware (`pages/_middleware`) that gets invoked for every page. In the middleware file we expose the handler function and also define a global variable that we mutate on every request:
```typescript
// pages/_middleware
let count = 0;
export function middleware(req: NextRequest) {
console.log(req.url);
count += 1;
}
```
Currently we cache the module scope in the runtime so subsequent invocations would hold the same globals and the module would not be evaluated again. This would make the counter to increment for each request that the middleware handles. It is for this reason that we **can't have a global location** that changes across different invocations. Each invocation of the same function uses the same global which also holds primitives like `URL` or `Request` so changing an hypothetical `globalThis.location` per request would affect concurrent requests being handled.
Then, it is not possible to use relative URLs in the same way the browser does because we don't have a global to rely on to use its host to compose a URL from a relative path.
### Why it works today
We are **not** validating what is provided to, for example, `NextResponse.rewrite()` nor `NextResponse.redirect()`. We simply create a `Response` instance that adds the corresponding header for the rewrite or the redirect. Then it is **the consumer** the one that composes the final destination based on the request. Theoretically you can pass any value and it would fail on redirect but won't validate the input.
Of course this is inconsistent because it doesn't make sense that `NextResponse.rewrite('/test')` works but `fetch(new NextRequest('/test'))` does not. Also we should validate what is provided. Finally, we want to be consistent with the way a browser behaves so `new Request('/test')` _should_ not work if there is no global location which we lack.
### What this PR does
We will have to deprecate the usage of relative URLs in the previously mentioned scenarios. In preparation for it, this PR adds a validation function in those places where it will break in the future, printing a warning with a link that points to a Next.js page with an explanation of the issue and ways to fix it.
Although middleware changes are not covered by semver, we will roll this for some time to make people aware that this change is coming. Then after a reasonable period of time we can remove the warning and make the code fail when using relative URLs in the previously exposed scenarios.
## Bug
Fixes: #32515
Previously, we render the `suffix` after consuming 1st chunk, instead we should render it after stream finished
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
This fixes our check for fallback pages during `next export` as we are currently erroring even when the erroneous pages are not included in the `exportPathMap`. This also adds additional tests to certify the expected behavior for the error.
## 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/29135
## Feature
Resolves#30996
- [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
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
When there is a DOM element with id of `process`, the DOM marks it as a global, so `window.process` would exist. We should check for `process.env` to make sure it is available too.
* 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>
x-ref [#31552 ](https://github.com/vercel/next.js/issues/31552)
x-ref https://github.com/vercel/next.js/issues/32115
x-ref https://github.com/vercel/next.js/issues/32546
x-ref https://github.com/vercel/next.js/issues/32721
Since this PR https://github.com/vercel/next.js/pull/31455 is merged, `enhanced-resolve` dependency's resolved field is changed which caused broken yarn pnp.
I am not sure how this field has been changed or this is intentional or not
When I install webpack locally, `enhanced-resolve`'s resolved field in lock file is always `registry.yarnpkg.com` not `codeload.github.com`
## Bug
- [x] 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`
Co-authored-by: Tobias Koppers <1365881+sokra@users.noreply.github.com>
Co-authored-by: JJ Kasper <22380829+ijjk@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`
Something [between `11.0.2-canary.5` and `11.0.2-canary.6`](https://github.com/vercel/next.js/compare/v11.0.2-canary.5...v11.0.2-canary.6) changed the behavior that logged any runtime errors in `getStaticProps` to stderr. This is only observable if `getStaticProps` has a `revalidate` value, and the build did not fail. The error has to happen in a subsequent revalidation step.
This PR reverts the change and fixes#30375.
## 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`
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
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 https://github.com/vercel/next.js/issues/32024
Fixing makeStylesheetInert.
Fixes log import.
## Bug
- [x] 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`
Co-authored-by: Devin Wall <87490815+DevinWallKcl@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`
* Move resolve-url-loader into Next.js
Fixes#32157
Moves resolve-url-loader into Next.js and strips out all features that are not used like `rework` support. Will reduce install size as well as allow for optimizing the approach in the near future.
* Update precompiled
* Use loader-utils 2
* Update trace test
* Revert "Update trace test"
This reverts commit 7c09a07871cc0ab72d5fcd4151a2d8efbc1aad8f.
* Add es5-ext as it's used in trace tests
* Update join-function.js
* Update bundle5.js
We didn't port this plugin to next-swc given that the eslint setup warns for this automatically. Given that we still get issues opened for this particular warning coming from the plugin it'd be good to remove it.
## 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`
* Don't render `next/head` in _error for RSC
* Save an error in `__next_s` for client to be aware RSC rendering is errored
* Fix `req.url` when errored
* Refactor some changes in middleware ssr loader
It adds AbortController and AbortSignal Web runtimes APIs to be used by the user at Edge Functions.
For doing that it delegates into `abort-controller` dependency that has been frozen to prevent any modification.
Co-authored-by: Zhang Zhi <20026577+fytriht@users.noreply.github.com>
This PR is a follow up to PR #32623 to fix the remaining blur styles.
These are unlikely to be overridden by the user but this PR is necessary to make `placeholder=empty` (default behavior) and `placeholder=blur` end up with the same inline styles on the loaded image.
Related to https://github.com/vercel/next.js/issues/18398#issuecomment-997114428
## 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 issue: #14701
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [x] Errors have helpful link attached, see `contributing.md`
<details>
<summary>Screenshot</summary>
<img width="1388" alt="Screen Shot 2021-12-17 at 2 07 04 PM" src="https://user-images.githubusercontent.com/22380829/146602057-9675455d-cf10-435a-b121-bc462a87fbf3.png">
</details>
Closes: https://github.com/vercel/next.js/issues/14701
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
# Description
The redirect responses do not contain a message body. This is in conflict with the RFCs (below) and causes Traefik (a reverse proxy) to invalidate the responses. In this pull request, I add a response body to the redirect responses.
This PR is similar to https://github.com/vercel/next.js/pull/25257, it appears that there are some other locations where redirection is handled incorrectly in next.js.
# References
- https://datatracker.ietf.org/doc/html/rfc7230#section-3.3
> All 1xx (Informational), 204 (No Content), and 304 (Not Modified) responses must not include a message-body. All other responses do include a message-body, although the body may be of zero length.
- https://datatracker.ietf.org/doc/html/rfc7231#section-6.4.3
> The server's response payload usually contains a short hypertext note with a hyperlink to the different URI(s).
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
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`
This PR implements the basic inline embedded server response data (#30994) for RSC, as well as partial hydration (#31338) for RSC and React 18 SSR streaming.
For #30994, `renderTargetSuffix` is passed to the `bodyResult` resolver so the stream can inject corresponding hydration scripts and the closing body tag at the correct time. The expected behavior should be _prefix_, _body shell_, _suffix scripts_, _stream and inlined data_, _close body_.
For #31338, we have to force turn on `disableOptimizedLoading` when `concurrentFeatures` is enabled to opt-out of deferred script tags.
## Bug
- [x] Related issues linked using `fixes #number`
- [x] 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
- [ ] 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`
Currently, we have telemetry to measure how ESLint is invoked,
but we do not have telemetry that tells us how many users have
disabled ESLint during build.
This commit adds a new feature, `build lint` to track this metric.
## 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`
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`.
There was a mistake in #32077 which imported a different module than _document in the _document .d.ts file. I found that we didn't have a test for a custom _document.tsx and _app.tsx with TypeScript, so I've added one that fails on canary and passes with this fix to ensure this does not happen in the future.
Fixes#32110
## 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 ensures we catch any errors in `handleRequest` so that we can respond with a 400 for invalid requests.
## 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/32075
Closes: https://github.com/vercel/next.js/pull/32080
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`
This makes sure to include the `page` for dynamic routes when they encounter an error during prerendering as we currently only include the `path`, e.g. before we would only show `/blog/first` and now we show `/blog/[slug]: /blog/first`
## 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 ensures type checking passes correctly for middleware types when `skipLibCheck: false` is set in `tsconfig.json`. This also moves the `middleware-types` to be an isolated test to ensure it isn't relying on any monorepo dependencies.
## 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/31992#issuecomment-984174872
Fixes#22733
Regardless of whether it's recommended that Link be used with external href values or not, they can be used and `onMouseEnter` being swallowed with an external href value is unexpected behavior.
## Bug
- [x] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [x] Make sure the linting passes by running `yarn lint`
If importing an external module inside a Server Component (`.server.js`), it shouldn't be bundled into the client. Only client components should be kept.
## 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`
* fix(types): add missing ua type for NextRequest
add missing ua string type on NextRequest["ua"], returns full agent as string
* Update UserAgent type
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This allows TypeScript users to have type safety for middleware functions.
- Closes#30490
Co-authored-by: Lee Robinson <9113740+leerob@users.noreply.github.com>
Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
## Bug
Fixes#31892
react 18: requires camelcase for those props
```
Warning: Invalid DOM property `imagesrcset`. Did you mean `imageSrcSet`
```
react 17: requires lowercase for those props
```
Warning: React does not recognize the `imageSrcSet` prop on a DOM element.
```
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
### Utils
* Add command `yarn next-react-18 test/integration/any-react-18-app/`
* Add util `withReact18`
```js
const withReact18 = require('../../react-18/test/with-react-18')
module.exports = withReact18({
experimental: {
concurrentFeatures: true,
},
})
```
## Bug
Fixes: #31675
Functional document without gIP should be enabled when streaming is enabled, even without rsc
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## 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/31012
I referred to the previous code.
```
if (errors == null) {
if (Object.keys(amp).length > 0) {
warnings = (warnings || []).concat(formatAmpMessages(amp) || [])
if (!warnings.length) warnings = null
}
}
```
https://github.com/vercel/next.js/pull/29753/files
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 adds an error document/link for hydration errors to help users debug these easier. While looking at adding this also noticed a typo in the dev-overlay which is fixed.
<details>
<summary>screenshot</summary>
<img width="1109" alt="Screen Shot 2021-11-16 at 15 56 29" src="https://user-images.githubusercontent.com/22380829/142078200-6c036ed9-ca7f-4d26-ae07-eb9bd89e991a.png">
</details>
## Documentation / Examples
- [x] Make sure the linting passes by running `yarn lint`
Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
Fixes#30791
The issue is that with Middleware we are introducing client compilation on a new layer. When a middleware changes (or is dropped after some time), Webpack reorganizes non-user modules as they are duplicated across different layer. This is currently triggering a full reload.
This also brings tests for HMR:
- Refresh on a Middleware change
- HMR works after a middleware compilation change.
Co-authored-by: Tobias Koppers <1365881+sokra@users.noreply.github.com>
Generally, AVIF quality can be lower compared to WebP so we can adjust this for the user so that it looks roughly the same depending on if the browser supports AVIF or WebP.
- Fixes#31254
- Related to https://github.com/lovell/sharp/issues/2850
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 changes the check for whether a rewrite is internal or if it should be proxied. Currently it checks if `protocol` is unset, which is only the case for relative URLs or localhost. This means that requests where there is a hostname set, or if localhost is specified in another way such as `127.0.0.1`, then it will be proxied, which potentially causes a proxy loop or ssl error. This PR changes the test so that it also checks if the hosts match, and only proxies if they are different.
Fixes#31179
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
* fix(30724): clear "x-middleware-next" header when chaining middlewares
* refactor: do not accumulate "x-middleware-next" header
* test: fix grammar of test case title
* Update packages/next/server/next-server.ts
Co-authored-by: Javi Velasco <javier.velasco86@gmail.com>
The `resource` argument[^1] in fetch may also be an instance of URL (or any other stringifiable value) but the sandbox variant of middlewares doesn't support that.
```js
export async function middleware(req, ev) {
await fetch(new URL('https://www.googleapis.com/oauth2/v3/certs'), {
redirect: 'manual',
method: 'GET',
})
return new Response(JSON.stringify({}), { status: 200 });
}
```
This is fixing the use of e.g. URL instance in `fetch`.
```
TypeError: initurl.startsWith is not a function
at getFetchURL (/my-next-app/node_modules/next/dist/server/web/sandbox/sandbox.js:246:17)
at fetch (/my-next-app/node_modules/next/dist/server/web/sandbox/sandbox.js:77:29)
at Object.middleware [as handler] (webpack-internal:///./pages/_middleware.js:86:15)
at async adapter (webpack-internal:///./node_modules/next/dist/server/web/adapter.js:30:22)
at async DevServer.runMiddleware (/my-next-app/node_modules/next/dist/server/next-server.js:430:26)
at async DevServer.runMiddleware (/my-next-app/node_modules/next/dist/server/dev/next-dev-server.js:394:28)
at async Object.fn (/my-next-app/node_modules/next/dist/server/next-server.js:807:34)
at async Router.execute (/my-next-app/node_modules/next/dist/server/router.js:211:32)
at async DevServer.run (/my-next-app/node_modules/next/dist/server/next-server.js:1115:29)
at async DevServer.run (/my-next-app/node_modules/next/dist/server/dev/next-dev-server.js:440:20)
```
[^1]: https://developer.mozilla.org/en-US/docs/Web/API/fetch#parameters
1. Align `renderToReadableStream` with `renderToNodeStream`, resolve promise of `NodeWritablePiper` only when `onCompleteShell` is called.
2. update webpack to disable chunk loading for web runtime
Item 1 is the preparation for middleware-ssr-loader. Then we can do the following there
```js
try {
result = await renderToHTML(page)
} catch (e) {
result = await renderToHTML(errorPage)
}
result.pipe(renderResult)
```
## 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`
Ensures that API routes are working as expected with `concurrentFeatures: true`. Closes#30586.
## 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`
When libraries are required outside of the middleware function context and they do checks such as `a instanceof Uint8Array` since the constructors are different between the two contexts they'll always yield false.
This is a problem for libraries validating user input as well as the WebCryptoAPI polyfill used outside of Edge Functions.
- Fixes#30477
- Fixes#30911
This is only a problem for the sandbox runtime, not when ran inside an Edge Function.
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`
Adds a test to ensure that `<Suspense>` and streaming are working properly with `concurrentFeatures` enabled.
## 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`
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`
