Reverts vercel/next.js#53578
This PR (#53578) will break client components test, revert it for now.
Can repro by adding `"use client"` to `app/page.tsx` in `test/production/jest/server-only.test.ts`
```
FAIL app/page.test.jsx
● Test suite failed to run·
Cannot find module 'private-next-rsc-mod-ref-proxy' from 'app/page.jsx'·
Require stack:
```
This:
- Adds a simple, generic tracer in the client that can be subscribed to in order to report spans
- Reports client spans through the HMR socket in the dev server
- Receives these spans and includes them in `.next/trace`
Closes WEB-1387
### What?
~The `setTimeout(() => {}, 0)` was used in place of `setImmediate` due to lack of support in the Edge Runtime. This is no longer a problem.~ Not working like I expected.
`ReadableStream.tee` should be widely supported as well as of [Node 16.5](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream/tee#browser_compatibility)
### Why?
Use the platform!
### How?
Use the built-in `ReadableStream.tee()`
Note: depends on next Turbopack publish
https://github.com/vercel/turbo/pull/5487 exports a reusable `handle_issues` function for reporting issues and erroring when failing issues are encountered.
This uses it for `next build` with a failing severity level of error.
### What?
When cloning a `Request` with `NextRequest` the second argument needs to take precedence over the `Headers` set on the original request.
### Why?
Follow-up of #53157
I checked the `Request` spec https://fetch.spec.whatwg.org/#request-class and following the order of execution, `init.headers` should indeed override the headers if the first param was `Request`.
I verified this in the browser too:
```js
const req1 = new Request("http://n", {headers: {"x-header": "foo"}})
const req2 = new Request(req1, {headers: {"x-header-2": "bar"}})
Object.fromEntries(req2.headers) // {x-header-2: "bar"}
```
So we should match `NextRequest` with this behavior.
### How?
Pass the `init` to `super` when cloning the request.
Closes NEXT-1521
Fixes#54094
When an mpa navigation takes place, we currently push the user to the new route and suspend the page indefinitely (x-ref: #49058). When navigating back, if the browser opts into using the [bfcache](https://web.dev/bfcache/), it will remain suspended and `pushRef.mpaNavigation` will be true. This means that anything that would cause the component to re-render will trigger the mpa navigation again (such as hovering over another `Link`, as reported in #53347)
This PR checks to see if bfcache is being used by observing `PageTransitionEvent.persisted` and if so, resets the router state to clear out `pushRef`.
Closes NEXT-1511
Fixes#53347
This ensures that corepack uses the correct package manager and version for the tmpdir install as it does for the rest of the repo. It reads the value from the root `package.json`.
Closes WEB-1401
### What & Why
Previously when rendering the root `/_not-found` in production, we'll always override the parallel routes component children with not-found component, this will break the navigation in build mode from root 404 `/_not-found` path.
### How
The new solution is to change the root `/_not-found` rendering strategy. Previously the loader tree of `/_not-found` look like this
```js
['',
{
children: ['not-found', {}, {}]
},
{ layout: ..., 'not-found': ...}
]
```
it's not a pretty valid tree, which could lead to problems during rendering.
New solution is to change the children to render a page, but the page content is `not-found.js` component. The new tree of root not-found will look like
```js
['',
{
children: ['__PAGE__', {}, {
page: ... // same as root 'not-found'
}]
},
{ layout: ..., 'not-found': ...}
]
```
This change could fix the navigation on the root not-found page.
Fixes#52264
### 🧐 What's in there?
This is another attempt to allow testing server-only code with Jest.
### 🧪 How to test?
There's an integration tests which can be triggered with `pnpm testheadless server-only`
Here is a more comprehensive setup:
<details>
<summary><code>app/lib/index.ts</code></summary>
```ts
import 'server-only'
export function add(num1: number, num2: number) {
return num1 + num2
}
```
</details>
<details>
<summary><code>app/lib/index.test.ts</code></summary>
```ts
import { add } from '.'
it('adds two numbers', () => {
expect(add(1, 3)).toEqual(4)
})
```
</details>
<details>
<summary><code>app/client-component.tsx</code></summary>
```ts
'use client'
import { useState } from 'react'
export default function ClientComponent() {
const [text, setText] = useState('not clicked yet')
return <button onClick={() => setText('clicked!')}>{text}</button>
}
```
</details>
<details>
<summary><code>app/client-component.test.tsx</code></summary>
```ts
import { fireEvent, render, screen } from '@testing-library/react'
import ClientComponent from './client-component'
it('can be clicked', async () => {
render(<ClientComponent />)
const button = screen.getByRole('button')
expect(button).toHaveTextContent('not clicked yet')
await fireEvent.click(button)
expect(button).toHaveTextContent('clicked!')
})
```
</details>
<details>
<summary><code>app/server-component.tsx</code></summary>
```ts
import { add } from '@/lib'
export default function ServerComponent({ a, b }: { a: number; b: number }) {
return (
<code role="comment">
{a} + {b} = {add(a, b)}
</code>
)
}
```
</details>
<details>
<summary><code>app/server-component.test.tsx</code></summary>
```ts
import { render, screen } from '@testing-library/react'
import ServerComponent from './server-component'
it('renders', () => {
render(<ServerComponent a={2} b={3} />)
expect(screen.getByRole('comment')).toHaveTextContent('2 + 3 = 5')
})
```
</details>
<details>
<summary><code>app/page.tsx</code></summary>
```ts
import Link from 'next/link'
import ClientComponent from './client-component'
import ServerComponent from './server-component'
export default function Page() {
return (
<>
<h1>Hello World</h1>
<Link href="/dave">Dave?</Link>
<p>
<ClientComponent />
</p>
<p>
<ServerComponent a={5} b={2} />
</p>
</>
)
}
```
</details>
<details>
<summary><code>app/page.test.tsx</code></summary>
```ts
import { render, screen } from '@testing-library/react'
import Page from './page'
it('greets', () => {
render(<Page />)
expect(screen.getByRole('link')).toHaveTextContent('Dave?')
expect(screen.getByRole('heading')).toHaveTextContent('Hello World')
expect(screen.getByRole('button')).toHaveTextContent('not clicked yet')
expect(screen.getByRole('comment')).toHaveTextContent('5 + 2 = 7')
})
```
</details>
<details>
<summary><code>app/[blog]/page.tsx</code></summary>
```ts
import { Metadata } from 'next'
import Link from 'next/link'
type Props = {
params: { blog: string }
}
export async function generateMetadata({
params: { blog: title },
}: Props): Promise<Metadata> {
return { title, description: `A blog post about ${title}` }
}
export default function Page({ params }: Props) {
return (
<>
<div>
<Link href="/">Back</Link>
</div>
<h1>All about {params.blog}</h1>
</>
)
}
```
</details>
<details>
<summary><code>app/[blog]/page.test.tsx</code></summary>
```ts
import { render, screen } from '@testing-library/react'
import Page from './page'
it('has the appropriate title', () => {
const title = 'Jane'
render(<Page params={{ blog: title }} />)
expect(screen.getByRole('heading')).toHaveTextContent(`All about ${title}`)
expect(screen.getByRole('link')).toHaveTextContent('Back')
})
```
</details>
<details>
<summary><code>app/layout.tsx</code></summary>
```ts
export default function RootLayout({ children }) {
return (
<html lang="en">
<body>{children}</body>
</html>
)
}
```
</details>
<details>
<summary><code>jest.config.js</code></summary>
```ts
const nextJest = require('next/jest')
const createJestConfig = nextJest({ dir: './' })
module.exports = createJestConfig({
testEnvironment: 'jsdom',
setupFilesAfterEnv: ['<rootDir>/test-setup.ts'],
})
```
</details>
<details>
<summary><code>package.json</code></summary>
```ts
{
"name": "rsc-test",
"version": "0.0.0",
"private": true,
"scripts": {
"test": "jest"
},
"devDependencies": {
"@testing-library/jest-dom": "latest"
}
}
```
</details>
<details>
<summary><code>test-setup.ts</code></summary>
```ts
import '@testing-library/jest-dom'
```
</details>
The app should run and all test should pass.
### ❗ Notes to reviewers
#### The problem:
1. next/jest configures jest with a transformer ([jest-transformer](https://github.com/vercel/next.js/blob/canary/packages/next/src/build/swc/jest-transformer.ts)) to compile react code with next -swc
2. the transformers configures next -swc for a given environment: Server or Client, based on jest global environment
3. Based on the environment, next -swc checks for invalid usage of `import('server-only')` `“use client”`, `export const metadata` or `export async function generateMetadata`
4. Because the global test environment is either jsdom or node, the same test suite can not include both client and server components
#### Possible mitigations
*A. Using jest projects*
When configured with [multiple projects](https://jestjs.io/docs/next/configuration/#projects-arraystring--projectconfig), Jest can launch different runners with different environment. This would allow running server-only code in node and client-only code in jsdom.
However, it requires user to completely change their jest configuration. It would also require a different setup when scaffolding new app-directory project with create-next.
*B. Using doc blocks*
Jest allows changing the environment per test file [with docBlock](https://jestjs.io/docs/configuration#testenvironment-string).
However, by the time jest is invoking next -swc on a source file to transform it, this information is gone, and next -swc is still invoked with the (wrong) global environment.
The PR #52393 provides a workaround for files with `import('server-only')`, but does not allow testing pages with metadata.
*C. Always compile for node*
Our jest-transformer could always configure next -swc for server:
- pass Server-specific validations `import('server-only')` `export const metadata` or `export async function generateMetadata`
- does not complain about `"use client"`
This is what this PR is about!
Fixes#47299
Co-authored-by: Jiachi Liu <4800338+huozhi@users.noreply.github.com>
### What?
wasm-bindgen's serde deserialization is more strict to not automatically coerce non-optionable default values for the mdx configurations. Since these are required options anyway, consolidate to construct default options.
Closes WEB-1384
This adds tags for `updatedModules` (an array of relative paths to changed modules that caused the hmr update) and `page` (the path to the updated page) to the `client-hmr-latency` event.
Test Plan: Ran `next dev` in a test app, changed a source file, and observed that the `client-hmr-latency` span in `.next/trace` has correct `page` and `updatedModules` tags.
### What?
When navigating to a new page with fixed or sticky positioned element as the first element, we were bailing on scroll to top behavior, which often isn't expected.
### Why?
Currently, we decide to bail on scroll to top behavior on navigation if the content that is swapped into view is visible within the viewport. Since fixed/sticky positioned elements are often intended to be relative to the current viewport, it's most likely not the case that you'd want it to be considered in this heuristic. For example, if you were scrolled far down on a page, and you navigated to a page that makes use of a sticky header, you would not be scrolled to the top of the page because that sticky header is technically visible within the viewport.
### How?
I've updated the previous implementation that was intended to skip targeting invisible elements to also skip over fixed or sticky elements. This should help by falling back to the next level of the layout tree to determine which element to scroll to.
I've deleted the `// TODO-APP` comments as I couldn't think of a scenario in which we'd need a global scrollTop handler -- if we've bailed on every element up the tree, it's likely the page wasn't scrollable.
Some additional considerations:
- Is the warning helpful or annoying?
- Is the parallel route trade-off an acceptable one? (ie, a parallel modal slot might not be considered in the content visibility check unless if it’s fixed positioned)
Closes NEXT-1393
Fixes#47475
### What?
Skip logging `/404` for pages routes in `next build` when app router root not-found is present
### Why?
When app router's root not-found is used it can cover all the not found cases, and for static rendering it can already replace the `404.html`. So in the tree view we don't need to log the pages `/404` when those cases are covered by app router.
`getEntryKey` had some logic to remove `children` if it was part of the entry (originally it was intended to fix an issue with parallel slots that were used in place of a page, but wasn't working as intended). However, this breaks pages that are named `children`.
Updating this again to implement what I think was the intended behavior in 4900fa21b0 which is to point to the correct entry when a parallel slot is used in place of a page component.
- x-ref: #52362
Closes NEXT-1514
Fixes#53072
Deploy all examples for each release (canary or stable, but not PRs).
Right now we only have one example that we deploy so we don't need to determine which ones changed.
Followup on the https://github.com/vercel/next.js/pull/52520. The enhancements:
1. Both `fetch` and `http(s)` APIs are intercepted in the testmode.
2. The loopback mode that would allow the test-side to use any fetch-mocking library of their choice.
Partial fix for #54012: do not generate a blur image in the image loader when the image is detected to be animated, rather than returning the *entire* animated image as the blur image.
This PR changes the internal `createActionProxy` util from a default
export to a named export, as the default export could be problematic if
it's built without the "esModuleInterop" step.
---------
Co-authored-by: Balázs Orbán <info@balazsorban.com>
x-ref: https://github.com/vercel/next.js/pull/51647
follow up for the code indexing issue for "build/**" folder, previous solution seem not working, trying just "build/**" without prefix
### What
Pairing PR to https://github.com/vercel/turbo/pull/5714, which I believe last piece to reenable correct datadog test reports for daily next.js integration + turbopack.
1. Creates a unique suite name to avoid collision / merging across different env / grouped test run
2. revert suitename template (which is for _suites_, not _suite_ for top level) as 1 resolves uniqueness
When implementing `opengraph-image` in my [personal-site-project](https://github.com/kylemcd/personal-site). I was consistently running into issues where custom fonts would either only work locally or only work on vercel. To me it seemed like differences in pathing in `edge` vs `nodejs` runtimes. After digging around I found issue #48081, more specifically [this comment](https://github.com/vercel/next.js/issues/48081#issuecomment-1565842740) where moving the `fetch` for the font into the `Image` function solved the issue.
I'm not sure if this is 100% the correct fix, or if this is an issue that needs to be solved in another way. If that's not the case this PR updates the documentation around `opengraph-image` to have the fetch for custom fonts inside of the `Image` function.
