During integration testing, previously, calls to `next build` could rely
on the project (the Next.js project) level ESLint configuration. In
order to correct this, a new `lint` option was added to `nextBuild` that
can be passed to enabled linting. If this is `false` or `undefined`, a
`--no-lint` argument will be passed to `next build` to prevent it from
running.
### What
See the PR's comment for the detail - TL:DR there is cases where test
case creates a connection to socket and it becomes a runaway, so
teardown logic hangs indefinitely. PR updates teardown to server to
force close any existing connections to prevents unexpected timeout.
This PR adds a new `experimental-test` command to Next.js CLI.
It has 3 main functions:
- auto installing missing playwright dependencies
- auto generating missing playwright config
- running tests via `playwright test`
I'm currently working on sharing a public RFC that will have more
information. I will link that here when its available.
Closes NEXT-3076 NEXT-3032
---------
Co-authored-by: samcx <sam@vercel.com>
## What?
Currently `next build` with Turbopack fails to run in certain tests (as
expected), the problem with that is that the `afterAll()` calls assume
the server was started, which doesn't happen when the build fails, and
then causes a timeout that can't be reported if an error happens. This
change ensures the error around `server['__app']` doesn't happen.
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Closes NEXT-2933
### What?
* upgrades turbopack for `getResolve` in webpack loaders
* add missing resolve-url-loader to turbopack for full sass support
Closes PACK-2634
## What?
Migrates the Sass support tests from `test/integration` (legacy test
suite) to `test/e2e`, this way all these tests run against both
development and production, whereas previously most of them would only
run against production.
This is helpful as it ensures the tests are running against Turbopack
too, which is highlighting some missing features in Sass support for
Turbopack.
I've had to rewrite most of the tests to check against the actual
rendered output in the browser instead of CSS output in the `.next`
folder, the majority of these now run regardless of implementation
details.
<details>
<summary>Tests that failed with Turbopack</summary>
```
FAIL e2e/app-dir/scss/url-global-partial/url-global-partial.test.ts (84.9 s)
● SCSS Support loader handling › CSS URL via file-loader sass partial › should render the page
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
13 | })
14 |
> 15 | it('should render the page', async () => {
| ^
16 | const browser = await next.browser('/')
17 | expect(
18 | await browser.elementByCss('.red-text').getComputedCss('color')
at it (e2e/app-dir/scss/url-global-partial/url-global-partial.test.ts:15:5)
at describe (e2e/app-dir/scss/url-global-partial/url-global-partial.test.ts:7:3)
at Object.describe (e2e/app-dir/scss/url-global-partial/url-global-partial.test.ts:6:1)
FAIL e2e/app-dir/scss/composes-external/composes-external.test.ts (84.765 s)
● CSS Module Composes Usage (External) › should render the module
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
12 | })
13 |
> 14 | it('should render the module', async () => {
| ^
15 | const browser = await next.browser('/')
16 | expect(
17 | await browser.elementByCss('#verify-yellow').getComputedCss('color')
at it (e2e/app-dir/scss/composes-external/composes-external.test.ts:14:3)
at Object.describe (e2e/app-dir/scss/composes-external/composes-external.test.ts:6:1)
FAIL e2e/app-dir/scss/composes-basic/composes-basic.test.ts (35.629 s)
● CSS Module Composes Usage (Basic) › should render the module
expect(received).toBe(expected) // Object.is equality
Expected: "rgb(255, 255, 0)"
Received: "rgb(0, 0, 0)"
16 | expect(
17 | await browser.elementByCss('#verify-yellow').getComputedCss('color')
> 18 | ).toBe(colorToRgb('yellow'))
| ^
19 | expect(
20 | await browser
21 | .elementByCss('#verify-yellow')
at Object.toBe (e2e/app-dir/scss/composes-basic/composes-basic.test.ts:18:7)
FAIL e2e/app-dir/scss/npm-import-nested/npm-import-nested.test.ts (90.889 s)
● Good Nested CSS Import from node_modules › should render the page
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
12 | })
13 |
> 14 | it('should render the page', async () => {
| ^
15 | const browser = await next.browser('/')
16 | expect(
17 | await browser.elementByCss('.red-text').getComputedCss('color')
at it (e2e/app-dir/scss/npm-import-nested/npm-import-nested.test.ts:14:3)
at Object.describe (e2e/app-dir/scss/npm-import-nested/npm-import-nested.test.ts:6:1)
FAIL e2e/app-dir/scss/nm-module-nested/nm-module-nested.test.ts (81.941 s)
● Valid Nested CSS Module Usage from within node_modules › should render the page
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
12 | })
13 |
> 14 | it('should render the page', async () => {
| ^
15 | const browser = await next.browser('/')
16 | expect(await browser.elementByCss('#other2').getComputedCss('color')).toBe(
17 | colorToRgb('red')
at it (e2e/app-dir/scss/nm-module-nested/nm-module-nested.test.ts:14:3)
at Object.describe (e2e/app-dir/scss/nm-module-nested/nm-module-nested.test.ts:6:1)
```
</details>
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Closes NEXT-2550
---------
Co-authored-by: Tobias Koppers <tobias.koppers@googlemail.com>
### What
Keep improving the hydration erros. Currently we divide the hydration
mismatch types into two categories, html tag mismatch and text mismatch.
We're displaying the mismatched text content between server and client
here since we have it in the component stack and warnings.
We've already made some improvements in #62590 , here we carry on
improving the highlited text into red and bold that is much easier for
you to spot on.
This updated a few long snapshots that we could collapse and show only
the text content difference instead of all the component stack.
### Screenshots
(Dark and light modes)
#### Mismatch html tags
<img width="360"
src="https://github.com/vercel/next.js/assets/4800338/f721b374-69cc-4600-a09d-bef87e885fab"><img
width="360"
src="https://github.com/vercel/next.js/assets/4800338/1abf2572-2be8-4359-a652-8ba39aaccfd3">
#### Mismatch text content
<img width="360"
src="https://github.com/vercel/next.js/assets/4800338/7f0d2215-8bc0-4fba-9c92-6c44efa29531"><img
width="360"
src="https://github.com/vercel/next.js/assets/4800338/656d1e1a-3157-4bcf-a239-74bb81fcb4c4">
#### Large content mismatch
### Why
I was intended to bring a html diff between server and client html
content but turns out the diff result could be giant and not ideal due
to few reasons. So we switched to the path of leveraging component stack
and mismatch contents.
React reordering the tags after hydration. For instance the `script` or
`link` tags could be hoist by React Float, so the lines of html is are
to preserved. so the diff is hard to be super accurate unless your
mismatch is small. If you're mismatch a component with rich html
content, it could be a pretty large diff.
Another case is if you have a bad nesting html like `<p> ...<span>...
<p>my text</p> ...</span>... <p>` where there're many span in between,
the final different could also be hudge as browser will close the first
`<p>` tag and the rest content will go into the diff. Hence we're going
with the component and text content diff.
Closes NEXT-2645
### What
When you have bad nesting html in your React code, React wil raise
hydration error since the browser html parser might parse it to sth else
different comparing to server html on client. Previously we're display
only the warning in the error description in dev overlay.
Now we introduced another format of displaying pesudo html that
representing your code, with highlighting the html tag that causes the
error. Since React might gives you the whole component stack of React
tree, so we also introduced a way that can collapse the error.
#### Example
https://github.com/vercel/next.js/assets/4800338/622122d6-4d2e-4c8e-95e8-4864343e478b
### Why
The reason we added this is that even we show the html diff, it could
super large due to React ordering the html on client, so the mismatch
might be a lot. The idea here is similar to what you saw when you passed
down a bad event handler into server component, we displayed a pesudo
html as it could hit your mind faster than just seeing the warning. The
best way is to display the source code, but before we can show the
source, getting component stack display as pseudo html instead of here
could be more helpful.
### After vs Before
<img width="400"
src="https://github.com/vercel/next.js/assets/4800338/714119ad-ff23-46a9-bc5a-5601eb390e71">
<img width="400"
src="https://github.com/vercel/next.js/assets/4800338/575f95fa-889e-4cee-ad19-9c2fea06519a">
Closes NEXT-2621
This ensures our dynamic routes that have the same specificity as
`_next/static/:path*` don't get matched unexpectedly when the
`_next/static` asset doesn't exist. We were holding off on making this
change explicit due to compatibility concerns but these are no longer a
concern and the unexpected matching is more of a concern.
Closes: CSM-11
Fixes: https://github.com/vercel/next.js/issues/19270
Closes NEXT-2613
### What
We've had the Next.js version checker in dev overlay of webpack mode.
But it was missing for turbopack. Add it in turbopack mode and also give
a small marker `"(turbo)"` to highlight turbopack mode.
Screenshot
<img width="576" alt="image"
src="https://github.com/vercel/next.js/assets/4800338/1bb1500c-fd92-43bd-a60a-ddc7cd63ce6f">
Closes NEXT-2196
Closes NEXT-2106
### What?
Follow-up to #60579 and #60750. Checking `startsWith` is not enough
because it hides the rest of the stack. Changed the test to check the
snapshot for Turbopack and webpack.
Fixes a bug where the stack lines showed `http (NaN:NaN)` as the source
lines.
Added support for source lines that don't have a open in editor.
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Closes NEXT-2128
- Both the standalone server and the `startServer` function it calls
attempt to stop the server on `SIGINT` and `SIGTERM` in different ways.
This lets `server.js` yield to `startServer`
- The cleanup function in `startServer` was not waiting for the server
to close before calling `process.exit`. This lets it wait for any
in-flight requests to finish processing before exiting the process
- Sends `SIGKILL` to the child process in `next dev`, which should have
the same effect of immediately shutting down the server on `SIGTERM` or
`SIGINT`
fixes: #53661
refs: #59551
------
Previously #59551 attempted to fix#53661, but had broken some tests in
the process. It looks like the final commit was also missing an intended
change to `utils.ts`. This should fix those issues as well as introduce
a new set of tests for the graceful shutdown feature.
In the last PR I was squashing and force-pushing updates along the way
but it made it difficult to track the changes. This time I'm pushing
quite a few commits to make it easier to track the changes and refactors
I've made, with the idea that this should be squashed before being
merged.
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BREAKING CHANGE
Since `next export` has been printing a deprecation warning since https://github.com/vercel/next.js/pull/47376, its safe to remove in semver-major.
The upgrade path is to simply add `output: 'export'` in `next.config.js` - everything will continue to work the same.
This config greatly improves the `next dev` experience today. And in the future, it will improve performance of `next build` because we no longer need to do two passes (build then export).
### What?
`globalThis.ReadableStream` and `globalThis.WriteableStream` has been exposed since Node.js 18, which is our new default requirement. (#56943)
### Why?
This simplifies the code and might result in slightly better performance.
### How?
Drop any checks of `globalThis` properties that are always defined now.
### What?
This implements Server Actions inside the new Turbopack next-api bundles.
### How?
Server Actions requires:
1. A `.next/server/server-reference-manifest.json` manifest describing what loader module to import to invoke a server action
2. A "loader" entry point that then imports server actions from our internal chunk items
3. Importing the bundled `react-experimental` module instead of regular `react`
4. A little 🪄 pixie dust
5. A small change in the magic comment generated in modules that export server actions
I had to change the magic `__next_internal_action_entry_do_not_use__` comment generated by the server actions transformer. When I traverse the module graph to find all exported actions _after chunking_ has been performed, we no longer have access to the original file name needed to generate the server action's id hash. Adding the filename to comment allows me to recover this without overcomplicating our output pipeline.
Closes WEB-1279
Depends on https://github.com/vercel/turbo/pull/5705
Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
Co-authored-by: Jiachi Liu <4800338+huozhi@users.noreply.github.com>
When errors are thrown in middleware it could re-send headers for the same response
```
Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
at __node_internal_captureLargerStackTrace (node:internal/errors:490:5)
at new NodeError (node:internal/errors:399:5)
at ServerResponse.setHeader (node:_http_outgoing:645:11)
at origSetHeader (/next.js/packages/next/src/server/base-server.ts:777:16)
at ServerResponse._res.setHeader (/next.js/packages/next/src/server/base-s
erver.ts:777:16)
at setHeader (/next.js/packages/next/src/server/base-http/node.ts:84:15)
at renderErrorImpl (/next.js/packages/next/src/server/base-server.ts:2790:
11)
at <anonymous> (/next.js/packages/next/src/server/base-server.ts:2777:19)
at trace (/next.js/packages/next/src/server/lib/trace/tracer.ts:213:14)
at DevServer.renderError (/next.js/packages/next/src/server/base-server.ts
:2776:24)
at DevServer.renderError (/next.js/packages/next/src/server/next-server.ts
:1299:18)
at DevServer.handleRequestImpl (/next.js/packages/next/src/server/base-ser
ver.ts:1185:23) {
code: 'ERR_HTTP_HEADERS_SENT'
}
```
Migrate middleware-errors test to e2e test to avoid flaky assertion due to duplicated logging collected in integration test.
Closes NEXT-1629
## Logging Improvements
* Delay server start logging
Post start logging after request handler is created, so when error
occurred like missing "app" or "pages" directory it won't log start
server message, instead it will only show error message.
* Fix jsconfig hmr case
Previously the `jsconfig.json` is patched too early that didn't trigger
the hmr reload, this PR enables it to show on the
* Adding timestamp for "ready" event
Display a timesmap after "ready" message, so we can monitor how long
does it take, and keep perfing on it
* Polish logging format
* Starts with captital letter
* align the indentation
![image](https://github.com/vercel/next.js/assets/4800338/fb87e0c4-3965-48da-86ef-a178e77d83f2)
### What
Found a flaky test like https://github.com/vercel/next.js/actions/runs/6125719281/job/16628276301?pr=55118#step:29:174, `get-port` throws by port is not available. Peeking bit, there seems an upstream fix hope to improve the situation but unfortunately it happened after get-port switched to native esm only, so bumping is non trivial work. Instead adapting get-port-please as a replacwement but leave get-port as fallback for a while to verify its stability. Once we are certain, we can remove old get-port entirely.
### What?
https://vercel.slack.com/archives/C04KC8A53T7/p1694190462958199
I realized we throws an error attempt to destory against undefined instance when `beforeAll` fails in any reason. This is quite redundant error since if next instance doesn't exist, likely there's an upstream test failures already and destory against undefined error is not useful to debug anyway.
PR replaces `nextTestSetup`'s teardown first, for the remaining places calling `next.destory` explicitly will be amended later.
### What?
Switch the default for `--turbo` to the new `--experimental-turbo`, remove the old code in next.js
### Why?
The new approach will be used in future
Closes WEB-1506
### What?
This PR makes it easier to use Next.js with IPv6 hostnames such as `::1` and `::`.
### How?
It does so by removing rewrites from `localhost` to `127.0.0.1` introduced in #52492. It also fixes the issue where Next.js tries to fetch something like `http://::1:3000` when `--hostname` is `::1` as it is not a valid URL (browsers' `URL` class throws an error when constructed with such hosts). It also fixes `NextURL` so that it doesn't accept `http://::1:3000` but refuse `http://[::1]:3000`. It also changes `next/src/server/lib/setup-server-worker.ts` so that it uses the server's `address` method to retrieve the host instead of our provided `opts.hostname`, ensuring that no matter what `opts.hostname` is we will always get the correct one.
### Note
I've verified that `next dev`, `next start` and `node .next/standalone/server.js` work with IPv6 hostnames (such as `::` and `::1`), IPv4 hostnames (such as `127.0.0.1`, `0.0.0.0`) and `localhost` - and with any of these hostnames fetching to `localhost` also works. Server Actions and middleware have no problems as well.
This also removes `.next/standalone/server.js`'s logging as we now use `start-server`'s logging to avoid duplicates. `start-server`'s logging has also been updated to report the actual hostname.
![image](https://github.com/vercel/next.js/assets/75556609/cefa5f23-ff09-4cef-a055-13eea7c11d89)
![image](https://github.com/vercel/next.js/assets/75556609/619e82ce-45d9-47b7-8644-f4ad083429db)
The above pictures also demonstrate using Server Actions with Next.js after this PR.
![image](https://github.com/vercel/next.js/assets/75556609/3d4166e9-f950-4390-bde9-af2547658148)
Fixes#53171Fixes#49578
Closes NEXT-1510
Co-authored-by: Tim Neutkens <6324199+timneutkens@users.noreply.github.com>
Co-authored-by: Zack Tanner <1939140+ztanner@users.noreply.github.com>
### What?
* fixes problems in Next.rs API introduced by #52846
* adds test infrastructure for experimental turbo testing
* adds two test cases to verify the infrastructure
* add grouping of output logs in run-tests
* simplify template loading
### Why?
### How?