chore(deps): update nextjs monorepo to v16 (major) (#7854)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
|
[eslint-config-next](https://nextjs.org/docs/app/api-reference/config/eslint)
([source](https://redirect.github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next))
| [`15.5.4` ->
`16.0.0`](https://renovatebot.com/diffs/npm/eslint-config-next/15.5.4/16.0.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/eslint-config-next/16.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/eslint-config-next/15.5.4/16.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
| [next](https://nextjs.org)
([source](https://redirect.github.com/vercel/next.js)) | [`15.5.4` ->
`16.0.0`](https://renovatebot.com/diffs/npm/next/15.5.4/16.0.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/next/16.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/next/15.5.4/16.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>vercel/next.js (eslint-config-next)</summary>

###
[`v16.0.0`](https://redirect.github.com/vercel/next.js/compare/v15.5.6...950609f96f694c5475d18cd2d72a0052ca04d4b9)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.5.6...v16.0.0)

###
[`v15.5.6`](https://redirect.github.com/vercel/next.js/releases/tag/v15.5.6)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.5.5...v15.5.6)

> \[!NOTE]\
> This release is backporting bug fixes. It does **not** include all
pending features/changes on canary.

##### Core Changes

- Turbopack: don't define process.cwd() in node\_modules
[#&#8203;83452](https://redirect.github.com/vercel/next.js/issues/83452)

##### Credits

Huge thanks to [@&#8203;mischnic](https://redirect.github.com/mischnic)
for helping!

###
[`v15.5.5`](https://redirect.github.com/vercel/next.js/releases/tag/v15.5.5)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.5.4...v15.5.5)

> \[!NOTE]\
> This release is backporting bug fixes. It does **not** include all
pending features/changes on canary.

##### Core Changes

- Split code-frame into separate compiled package
([#&#8203;84238](https://redirect.github.com/vercel/next.js/issues/84238))
- Add deprecation warning to Runtime config
([#&#8203;84650](https://redirect.github.com/vercel/next.js/issues/84650))
- fix: unstable\_cache should perform blocking revalidation during ISR
revalidation
([#&#8203;84716](https://redirect.github.com/vercel/next.js/issues/84716))
- feat: `experimental.middlewareClientMaxBodySize` body cloning limit
([#&#8203;84722](https://redirect.github.com/vercel/next.js/issues/84722))
- fix: missing next/link types with typedRoutes
([#&#8203;84779](https://redirect.github.com/vercel/next.js/issues/84779))

##### Misc Changes

- docs: early October improvements and fixes
([#&#8203;84334](https://redirect.github.com/vercel/next.js/issues/84334))

##### Credits

Huge thanks to
[@&#8203;devjiwonchoi](https://redirect.github.com/devjiwonchoi),
[@&#8203;ztanner](https://redirect.github.com/ztanner), and
[@&#8203;icyJoseph](https://redirect.github.com/icyJoseph) for helping!

</details>

<details>
<summary>vercel/next.js (next)</summary>

###
[`v16.0.0`](https://redirect.github.com/vercel/next.js/compare/v15.5.6...950609f96f694c5475d18cd2d72a0052ca04d4b9)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.5.6...v16.0.0)

###
[`v15.5.6`](https://redirect.github.com/vercel/next.js/releases/tag/v15.5.6)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.5.5...v15.5.6)

> \[!NOTE]\
> This release is backporting bug fixes. It does **not** include all
pending features/changes on canary.

##### Core Changes

- Turbopack: don't define process.cwd() in node\_modules
[#&#8203;83452](https://redirect.github.com/vercel/next.js/issues/83452)

##### Credits

Huge thanks to [@&#8203;mischnic](https://redirect.github.com/mischnic)
for helping!

###
[`v15.5.5`](https://redirect.github.com/vercel/next.js/releases/tag/v15.5.5)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.5.4...v15.5.5)

> \[!NOTE]\
> This release is backporting bug fixes. It does **not** include all
pending features/changes on canary.

##### Core Changes

- Split code-frame into separate compiled package
([#&#8203;84238](https://redirect.github.com/vercel/next.js/issues/84238))
- Add deprecation warning to Runtime config
([#&#8203;84650](https://redirect.github.com/vercel/next.js/issues/84650))
- fix: unstable\_cache should perform blocking revalidation during ISR
revalidation
([#&#8203;84716](https://redirect.github.com/vercel/next.js/issues/84716))
- feat: `experimental.middlewareClientMaxBodySize` body cloning limit
([#&#8203;84722](https://redirect.github.com/vercel/next.js/issues/84722))
- fix: missing next/link types with typedRoutes
([#&#8203;84779](https://redirect.github.com/vercel/next.js/issues/84779))

##### Misc Changes

- docs: early October improvements and fixes
([#&#8203;84334](https://redirect.github.com/vercel/next.js/issues/84334))

##### Credits

Huge thanks to
[@&#8203;devjiwonchoi](https://redirect.github.com/devjiwonchoi),
[@&#8203;ztanner](https://redirect.github.com/ztanner), and
[@&#8203;icyJoseph](https://redirect.github.com/icyJoseph) for helping!

</details>

---

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---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Lukas Harbarth <[email protected]>

Author: renovate[bot]

examples/nextjs-app/.eslintrc.json

@@ -29,7 +29,7 @@ const THEMES = [
 export function AppShellBar() {
   const router = useRouter();
   const pathname = usePathname();
-  const popoverOpenerRef = useRef<ButtonDomRef | undefined>(undefined);
+  const popoverOpenerRef = useRef<ButtonDomRef>(null);
   const [popoverOpen, setPopoverOpen] = useState(false);
   const [currentTheme, setCurrentTheme] = useState(getTheme);
 
@@ -64,6 +64,7 @@ export function AppShellBar() {
       <ResponsivePopover
         className={classes.popover}
         open={popoverOpen}
+        /* eslint-disable-next-line react-hooks/refs */
         opener={popoverOpenerRef.current}
         onClose={() => {
           setPopoverOpen(false);

examples/nextjs-app/app/components/AppShellBar.tsx

@@ -0,0 +1,14 @@
+import { defineConfig } from 'eslint/config';
+import nextCoreWebVitals from 'eslint-config-next/core-web-vitals';
+import nextTypescript from 'eslint-config-next/typescript';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+export default defineConfig([
+  {
+    extends: [...nextCoreWebVitals, ...nextTypescript],
+  },
+]);